Aiming at the problem of coal mining in irregular areas of Yushuwan Coal Mine, a double-lane strip mining method is proposed in combination with mining conditions, and its layout, mining method, transportation system, and ventilation system are introduced. According to the shape characteristics of the irregular area of Yushuwan Coal Mine, a plan design was carried out for this area, including layout, roadway specifications and support parameters, main equipment selection, roof management, mining technology, production capacity, etc. Field practice shows that double The strip mining method has greatly increased the mining efficiency of coal resources in irregular areas, and has brought significant economic benefits to the mine. It can be used to recover corner coal resources in mines that use continuous mining machines and shuttle cars to efficiently drive. Actively promote the use.

In order to improve the efficiency of gangue extraction from the roadway of 12314 working face in Xieqiao coal mine, and ensure the tunneling speed of 10 million tons of mine roadway, based on the engineering conditions and driving sequence of the roadway under the working face such as roadway yard, transportation roadway and coal outlet roadway, the paper successively tests "scraper rock loader + tramcar ", "scraper loader + belt + gangue bin + scraper + tramcar ", "scraper loader + belt + gangue bin + vertical hole + belt "gangue discharging system, studied the design and construction of gangue bin, gangue chute and belt groove, gradually cancelled the gangue discharging by tramcar, finally realized the parallel operation of" excavation, support, loading and transportation "and mechanized continuous gangue discharging, and improved the working efficiency of the gangue discharging system. The results show that, compared with the previous work, the labor of each shift in and out of the gangue system in 12314 working face is reduced by 2 and 4 people respectively, and the driving speed is increased by 3-5 times and 1.6 times respectively, which has achieved good engineering practice effect.

In order to explore the optimal mining area steering mode of Shengli No. 1 open-pit coal mine, this paper based on the production status of Shengli No. 1 open-pit coal mine, combined with the classical model formula to determine the reasonable working line length of each mining area, and according to the mining area division and mining sequence, put forward three steering schemes of the mining area. In the process of research, through simulating the steering period of four typical engineering position in mining process, and from the changes in production economic indicators caused by internal dumping time, external dumping amount, secondary stripping amount and other factors, synthetic analysis shows that the sector steering is the best. It can maximize the release of internal dumping space while ensuring the production continuity, and the economic benefit is remarkable.

The mine water suspended solids and turbidity is high in a coal-and-electricity integration enterprise in Yunnan. The mine water treatment process used high efficiency clarifier, gravity valveless filter and CIO2 disinfection. The system runs stable, suspended solids removal rate is more than 90%, and the turbidity of effluent is less than 5NTU. The 140m3/h treated effluent is used as coal mine production water, and the remaining 920m3/h effluent is discharged to the standard. In order to achieve the goal of water saving and emission reduction and zero drainage of mine water, the enterprise plans to use the effluent as the makeup water of circulation for coal-fired power units. According to the simulation test results of circulating water, the concentration ratio of circulating water can be increased to 5 times when phosphorus free water stabilizer is used. The annual economic benefit is 5.46 million yuan, pollutant reduction is 4247 tons, wastewater emission reduction is 5.31 million m3 after the mine water treatment and recycling, which has remarkable economic and environmental benefits.

Flood control planning is an important part of mining area planning and the basic guarantee of the site safety of coal mining enterprises,it is a supporting document for surface water management and ecological protection in the basin.Based on the induction and analysis of the sites of coal mining enterprises in different geomorphic environments in the Loess Plateau,spatial layout types were classified according to the extent of site intrusion into flood passage.After sorting out the development process of flood control planning,according to the mechanism of runoff generation, the control of soil and water loss is taken as the starting point.Taking the reduction of flood peak value as an element and the protection of ecological environment as the goal, the ecology is brought into the scope of flood control planning of mining areas, and the thinking of flood control planning of mining areas based on ecological protection is formed.The main points of ecological flood control planning of different spatial layout types were expounded from two aspects of ecology and engineering, and the ecological protection flood control planning mode with flood prevention and drainage in mining areas as the leading part and ecological management in small watershed as the planning unit was constructed.Under the guidance of the concept of high-quality development and harmonious coexistence of nature in the mining area, a new pattern of ecological restoration and environmental protection of the whole mining basin will be gradually realized.

According to the "design standards for heating, ventilation and air conditioning in the coal industry" and the actual situation of the country’s current environmental protection and fire protection policy changes, combining relevant norms and standards and production work practice，discussed the problems in the process of standard application，analyzed the particularity of the HVAC profession in the coal industry，put forward opinions and suggestions，and the direction of the next revision and addition，provide reference for HVAC designers in the coal industry.

Taking 8201 working face of a mine as the research background, the calculation formula of the broken position of the lateral basic roof in goaf is deduced by theoretical calculation, and it is concluded that the lateral basic roof of 8201 working face is broken at 6.42m of the coal wall. Combining with the distribution curve of the lateral abutment pressure of the goaf and the geological production conditions of the working face, the narrow coal pillar width is determined to be 8 m; the roadway after driving along the goaf is analyzed by FLAC3D simulation software The results show that: under the condition of 8m wide and narrow coal pillar, the roof subsidence of coal pillar side is obviously greater than that of solid coal side, and the bulging amount of coal pillar side is greater than that of solid coal side. In view of the difficulties in surrounding rock control of 5203 gob side entry, the combined control technology of "asymmetric anchor cable truss + coal pillar side anchor cable support + coal pillar side grouting" is proposed and applied to the field test, and good control effect is obtained.

There are many factors influencing the stability of the "small" structure of the lane reserved along the goaf. The article proposes the "small" structural stability control technology of the reserved lane space along the goaf, and establishes three evaluation indexes for the "small" structural stability of the lane reserved space, the amount of roof subsidence, the displacement of the two sides, and the maximum stress of the filling body. The degree of influence of five key parameters: body width, roadway width, mining height, roadway roof support strength, and filling body strength on the stability of the “small” structure of the roadway space; then the gray correlation degree and combination weight method are used to evaluate the indicators After analysis, the optimal solution for the stability of the "small" structure of the reserved lane space along the goaf was obtained and applied on site. The results show that: through the key parameters of the technical design of the "small" structure of the reserved lane space along the goaf, the roof subsidence and the two-side movement are small, the maximum stress on the filling body is low, the structure is stable, and the lane retention effect is good.

Aiming at the problem of the large deformation of gob-side entry retaining within the lower layer of deep and close coal seams, the gob-side entry retaining of 3203 transportation roadway in Zhongxin coal mine was selected as the research object. Combined with the field investigation, numerical simulation and field test, the stress and deformation characteristics of the gob-side entry retaining were analyzed. Then the integrated control technology of grouting anchor cable and hydraulic fracturing and roof cutting was proposed, and the industrial test was carried out in the field. The field ground pressure monitoring results show that the surrounding rock deformation of the roadway is effectively controlled and the stability of roadway surrounding rock is safeguarded, which has a certain reference value for the stability control of roadway surrounding rock with similar conditions.

In order to effectively control the hidden danger caused by the deformation of the channel in the production process of Wangpo coal mine. For this reason, the air return roadway of 3209 working face in Wangpo coal mine was selected as the research object, and the roadway support technical scheme was optimized by combining field investigation, theoretical analysis and field monitoring. Based on the theoretical analysis of the inducement of severe pressure and large deformation of surrounding rock in air return roadway of 3209 working face, the original support technology was optimized in combination with the actual engineering conditions, and the comprehensive support technology scheme of high-pressure grouting and strong anchor cable support was put forward, and the field application was carried out and the support effect was tested. The results show that the surrounding rock of the optimized support roadway is whole, the fracture separation area is small, and the original support roadway surrounding rock is large. The maximum relative movement of two sides of the optimized support roadway is 54mm, and the maximum separation of roof is 19mm. The optimized surrounding rock deformation and roof subsidence distance is small, which can effectively control the roadway deformation, and the optimized support technical scheme has remarkable effect. The research results provide reference and guidance for roadway surrounding rock control under similar conditions.

This paper is based on the current situation of the safe and efficient mining of the high-height working face of Xiaobaodang Coal Mine’s hard gangue layer, which uses hydraulic pre-cracked coal hard gangue layer technology, combined with the gangue 3D structure of the working face and the geological realism along the trench , Determined the reasonable division of the coal seam gangue pre-cracking, formulated the hydraulic pre-cracking gangue layer drilling parameters and layout plan, and designed the gangue pre-cracking construction technology. The test results show that: in the process of directional hydraulic fracturing, the fracturing effect is related to parameters such as pre-cracking pressure, pre-cracking time and water injection, among which the initiation pressure of the gangue in the cracked hole is 26~29Mpa, and the pre-cracking time is 120~190min , The water injection volume is 13~20m3, and the effect of gangue fracture development is divided into fracturing zone, softening and fracture secondary expansion zone, and fracture expansion zone. After adopting the hydraulic pre-cracking technology, the shearing efficiency of the shearer during the mining face is significantly improved, and the pre-cracking effect is obvious.

Based on the geology and mining technical conditions of the 6224-1 working face in Haishiwan Coal Mine, the influence of the coal-rock pillars on the working face is analyzed from the perspective of dynamic and static loads. It is concluded that the overlying rock pillars form a "T"-shaped spatial structure, which caused stress concentration. The collapse of the exposed roof of the working face, overlying rock pillars and goafs on both sides will produce high dynamic loads, and the coordinated movement of regional rock formations will also produce strong dynamic loads. Due to the adjacent slicing mining of the extra-thick coal seam, the technical conditions for deep-hole blasting prevention and control from the transportation lane of the working face to the roof of the rock pillar affected area are not available. According to the structural characteristics, a special measure roadway is designed to be arranged along the strike under the protective layer outside the rock pillar affected area, and pressure relief measures are constructed in the special measure roadway to the rock pillar affected area. Practice has proved that this method has a good effect on the prevention and control of rock burst in the overlying coal and rock pillar area, the top coal caving rate is high, and the benefit is significant. It can provide a reference for the prevention and control of rock burst in the working face under similar conditions.

Aiming at the complex geological structure of NO.8 coal seam in NO.14 mining area of north Lu Ban Shan coal mine and the problems of poor gas permeability; The principle of super-high hydraulic cutting joint and CO2 phase transition to crack and release pressure and permeability improvement was analyzed. In 143 rock cross-cut coal uncovering roadway, ultra-high hydraulic cutting seam and CO2 phase change induced cracking and anti-permeability test were conducted on NO. 8 coal seam.It is compared with the design test of ordinary extraction and ultra high hydraulic cutting joint.The test results show that the average volume fraction of single-hole gas in the test of ultra-high pressure hydraulic cutting joint and CO2 phase change cracking design scheme is 1.79 times and 1.20 times higher than that of ordinary extraction and ultra-high hydraulic cutting joint, and the average scalar fraction of single-hole gas extraction is 3.2 times and 1.9 times higher than that of ordinary extraction and ultra-high pressure hydraulic cutting joint.The influence radius of gas extraction at 90d was 4.58 times and 1.38 times that of ordinary extraction and ultra-high pressure hydraulic cutting joints.The drilling time under the same conditions is 50.5% and 40.6% shorter than that of ordinary extraction and ultra-high pressure hydraulic cutting joints, and the extraction time of standard gas is 66.7% and 50% shorter than that of ordinary extraction and ultra-high pressure hydraulic cutting joints, respectively.The combined anti-permeability technology of ultra-high pressure hydraulic cutting joint and CO2 phase change cracking is ideal for gas disaster control. It can be used as a reference for similar coal mines.

Based on the "three soft" thick coal seam spontaneous combustion easily under the condition of fully-mechanized caving face of roof and floor during the retreat, soft, support is difficult, coal seam spontaneous combustion period is short, tight, mechanical structure based on retracement face "short" masonry beam model, analyzed theoretically to prevent the occurrence of the "triangle" retreat space minimum support resistance is 13541.07 kN, put forward the whole section in the cross section of the cover to remove bracket method unified retracement support form and support strength;The hydraulic driven frame removal device replaces the motor winch traction bracket, forming the cooperative frame removal operation mode of "frame removal device + shovel plate type support carrier + frame type support carrier", which improves the mechanization degree and operation safety of the roof support in the retraction space, and realizes rapid retraction, reducing personnel and improving efficiency.

In order to explore the quantitative filling law of the immediate roof caving in the lower part of the goaf, overburden fracture characteristics and influence law of working face length. Analyzed the sliding law of the broken rock block in the goaf in the inclination direction, and deduced the calculation formula of the filling length (L) in the lower part of the goaf; Based on this, the quantitative characteristics of the main roof fracture and instability are analyzed, and the main roof fracture and instability formulas on the direction and inclination of the main roof are derived, and the UDEC numerical simulation is used in conjunction with engineering examples to verify the rationality of the theoretical derivation. The results show that under the action of the immediate roof caving and self-filling in the mining of steeply inclined coal seams, the main roof is divided into a stable area, an easily unstable area and a suspended roof area along the inclination direction, and the length of each section is positively correlated with the length of the working face; The location where the fracture occurs is above the broken rock filling body, and will maintain a stable structure of a certain length (L- x1) in the inclined direction under the action of the filling body. This research can provide a reference for the reasonable length arrangement of steeply inclined working face.

In order to study the drawing law of broken top-coal under the influence of caving angle (unbroken top-coal), the broken top coal is simplified to hexagonal irregular block by means of discrete element method, and the drawing law of top-coal under different caving angle is studied respectively. The results show that when the caving angle of top coal is less than 75°, the top coal recovery rate increases with the increase of caving angle, then decreases rapidly when caving angle is 90°, and then increases gradually with the increase of the caving angle. The top coal recovery rate reaches a maximum of 81.0% when caving angle is 75°, and a minimum of 70% when caving angle is 60° and caving angle is 90°. For different top coal caving angles, the optimization of coal drawing process should comprehensively consider the relationship between the coal-gangue interface and the shape and position of the drawing body, and comprehensively control the coal drawing amount and gangue ratio at different drawing stages.

Scraper conveyor is an important equipment in coal mine fully mechanized working face. It is often in the working environment of frequent heavy load starting, and the power imbalance exists in the dual motor drive, so the main problems are the difficulty of starting and uneven power distribution. In view of these problems, this paper studies the drive system of scraper conveyor, and proposes a dual motor drive variable frequency control strategy. The control strategy is combined with model predictive control and follows the principle of master-slave control. The main drive motor adopts current model predictive control and the secondary drive motor adopts direct torque model predictive control. Through MATLAB/Simulink simulation analysis of the control strategy, the results show that the proposed control strategy can solve the problem of power imbalance, and maintain the advantages of vector control and direct torque control, while playing the advantages of model predictive control, which is a suitable control strategy for drive system of scraper conveyor .

Aiming at the problem that the current steel wire rope flaw detector cannot accurately detect whether the steel wire rope is damaged, a steel wire rope flaw detector based on the principle of magnetic flux leakage is designed. Through the comparative analysis of the advantages and disadvantages of several excitation methods, the excitation method using permanent magnets is determined; when there is damage to the steel wire rope, there will be a magnetic leakage signal at the damaged place. You can use the magnetic sensor to pick up the magnetic leakage signal; use Maxwell to detect the magnetic leakage The magnetic field distribution of the steel wire rope damaged by the detection method was simulated and analyzed, and it was determined that the Hall element should be placed in the axial center of the flaw detector; by comparing and analyzing the magnetic flux leakage intensity of the steel wire rope with different rope diameters and different lift-off values, the determination The optimal lift-off value is 3mm; a mechanism that can be used to fix the wire rope and keep the Hall element at the optimal detection position is designed; by analyzing the errors that exist in the traditional amplification circuit when amplifying the detection signal, T is selected to be used Type feedback amplifier circuit to reduce the error effect of temperature drift on the detection signal. The experimental results show that the wire rope vibration has an effect on the detection signal, and the designed wire rope fixing device can keep the Hall element always in the optimal detection position, eliminating part of the impact of the wire rope vibration on the signal acquisition; traditional feedback amplifier circuit After a long time of operation, there will be temperature drift, which will lead to errors in the test results and affect the judgment of wire rope damage. The use of T-type feedback amplifier circuits can reduce this error; Low-pass filtering combined with integrated empirical mode decomposition has a good denoising effect. It is verified that the designed flaw detector can be based on whether the collected voltage signal is The mutation determines whether there is any damage to the wire rope.

In order to monitor the gas concentration of working face in coal mine, and ensure the integrity of data of gas concentration input, the pretreatment of the abnormal data were replaced, with the missing data filled up and noise eliminated and so on. Then making use of Lyapunov index, time series of original gas emission was identified of chaos and phase space reconstruction was carried out. Based on this, the mathematical model of chaotic prediction of gas emission quantity was established. According to the prediction results of gas concentration and the forecast interval, the threshold value was calculated and the warning level of corresponding was divided, completing warning information. The analysis of example showed that the prevention transfer of gas disaster from the post emergency response to intervention in advance was effectively achieved, having important practical significance to improve the level of gas prevention and control in coal mine. Key Words: coal mining; gas monitor; chaotic prediction model; prediction of gas concentration; analysis of gas warning

Pumped storage system in abandoned wells and roadways provides a new idea for resource utilization of abandoned mine and energy storage of power grid, However, the research on the technical scheme and key technical parameters of pumped storage system in abandoned wells and roadways still need to be further improved. combined with the abandoned process of coal mine roadway and goaf and pumped storage system in abandoned mines status analysis, The technical conception, technical scheme and realization method of pumped storage system in abandoned wells and roadways are put forward. The key technical parameters and calculation method of the system are introduced and deduced，The findings suggest: There are three feasible schemes ofpumped storage system in abandoned wells and roadways: The fully underground pumped storage system in abandoned wells and roadways system, the combined pumped storage system in abandoned wells and roadways system, and the pumped storage system in abandoned wells and roadways using siphon effect Water inflow in Goaf, storage capacity of abandoned well and Roadway Reservoir and system power reserve are three important technical parameters of pumped storage system in abandoned wells and roadways. In particular, the concept of step dead water level is put forward in the calculation of reservoir capacity of abandoned shaft and Goaf, which improves the calculation precision of reservoir capacity. The realization mode and key technical parameters of pumped storage system in abandoned wells and roadways technology are clarified, which provides a reference for the design and application of pumped storage system in abandoned wells and roadways system.

Aiming at the problem of low positioning accuracy and reliability due to the interference of NLOS error and ranging noise in the UWB positioning process, based on the UWB positioning solution, KF and PF are used to filter the UWB ranging value. In order to weaken the influence of NLOS error and ranging noise. Experimental results show that the method based on KF and PF ranging filtering can better suppress the influence of NLOS error and ranging noise. The ranging error after KF filtering is less than 3cm, and the ranging error after PF filtering is less than 1cm. Compared with UWB direct ranging solution, under static positioning conditions, After KF and PF ranging filter processing, KF ranging filter positioning error is reduced by 39.3%, PF ranging filter positioning error is reduced by 75.4%; under dynamic positioning conditions, KF ranging filter positioning error is reduced by 39.21%, PF measurement The distance filter positioning error is reduced by 50.48%.

The unstable failure can be described by the evolution of energy during rock failure, And it is helpful to evaluate the stability of safety engineering. In this paper, three kinds of common sandstones, such as siltstone, coarse sandstone and fine sandstone, are subjected to one-time uniaxial compression failure test and uniaxial graded loading and unloading failure test, Analysis of its failure characteristics and energy evolution law, The following conclusions are drawn: ① As the strength of sandstone increases (siltstone, coarse sandstone and fine sandstone), The form of sandstone failure is "shear tension failure → splitting failure → ejection failure ", And the larger the scale of the broken sandstone; ② As the unloading point rises, The ratio of dissipative energy to total energy of three common sandstone decreases first and then increases, The gap between the three dissipative energies is getting smaller and smaller, And eventually, The dissipative energy ratio is siltstone > coarse sandstone > fine sandstone; ③ When the axial stress of sandstone reaches 90.4~93.8% of peak stress, The system enters the bifurcation zone, foreshadowing the imminent destruction of sandstone; As the axial stress reaches 96.7~98.5% of the peak stress, The system enters chaos, The sandstone is already in a state of instability.

The dumping site of open-pit mine is a huge artificial accumulation soil rock mixture formed by loose crushing, mining, loading, transportation and dumping of the overlying soil and rock of the stope coal seam. It is formed by the consolidation and remodeling of the stripping material. The static lateral pressure coefficient K0 is a very important parameter in geotechnical engineering, and is the basis for studying the consolidation deformation characteristics and stress-strain analysis of the earth rock mixture. In this paper, K0 consolidation test is carried out on the heavy plastic soil rock mixture samples taken from the waste dump of Antaibao open pit mine by means of step loading consolidation test and continuous loading consolidation test. The results show that remodeling soil-rock mixture material has obvious structural characteristic which is increases with the preconsolidation pressure; For low preconsolidation pressure sample, experience value is basiclly equal to the experimental value in the stage of normal consolidation,0.44~0.45; For high preconsolidation pressure sample, experience value is greater than the experimental value in the stage of normal consolidation. Over consolidation stage, the empirical formula calculation value is higher than the measured value, and along with the increase of consolidation pressure the difference value decreases.

In order to monitor mining subsidence more efficiently and overcome the high cost of traditional measurement methods to obtain the surface deformation of mining area, used DS-InSAR technology to process 30 Sentinel-1A satellite images of a mining area from November 2018 to November 2019. Optimized original interferograms by maximum likelihood estimation, and combined the permanent scatterers and distributed scatterers to obtain the deformation law of mine surface and the railway. The results show that: 1) DS-InSAR can effectively optimize the phase of original interferograms and overcome the influence of incoherence, so that the number of high coherence pixels and the quality of deformation calculation are significantly improved; 2) The mining area railway continuously deforms during the mining period, with the maximum settlement value of 271 mm and the maximum tilt value of 0.82 mm/m; 3) According to the monitoring settlement results along the railway, the optimal probability integral prediction parameters are obtained:q=0.79, tanβ=1.63, θ_0=79°.The research method can provide a new method for deformation monitoring and law research in mining area.

Polyaluminum titanium chloride (PATC) was prepared by slow-dropping alkali method with aluminum chloride hexahydrate and titanium tetrachloride as materials. The effect of PATC with different alkalinity degrees on fine coal slurry sedimentation was studied by a Turbscan stability analyzer, and the results was compared with that of commercial polyaluminum chloride (PAC). The results showed that PATC had better effects than PAC on fine coal slurry sedimentation. The changes in TSI and ΔBS value of the coal slurry system was more significant with PATC than PAC. The sedimentation velocity of the particles increased by 33.3% and the turbidity of the supernatant was reduced by 33.4% when the PATC alkalinity was 0.4 and the dosage was 200g/t, compared with the sedimentation effect of PAC at the same dosage. Infrared analysis showed that Al3+ and Ti4+ hydrolysis characteristic peaks appeared in the prepared PATC. Zeta potential results showed that the zeta potential value on particle surfaces was significantly increased after adding PATC, which increased from -39.1 mv to -5.9 mv. However, the zeta potential value only increased from -39.1 mv to -17.8 mv after adding PAC. The introduction of Ti4+ was beneficial to improve the sedimentation effects of fine coal slurry.

The internal structure of the atomizing nozzle directly affects the fluid characteristics. The article introduced in detail a gas-water two-phase flow atomizing nozzle with vortex effect, its internal structure and working principle, and used numerical simulation to assist in characterizing and studied the internal flow field. Based on the characteristic fluid produced by the nozzle, the coal conveying system of Majiliang Coal Preparation Plant was treated with gas-water atomization swirl fluid to reduce dust in a limited space. At the same time, the dust concentration and water consumption related parameters were studied. The application results showed that: The fluid agglomeration effect produced is better, the dust reduction rate of the system can reach more than 90%, and the water consumption of a single nozzle is only 690ml/min, which provides application and reference value for industrialization sites and product design optimization.

The Yellow River Basin (YRB) is rich in mineral resources, and the rational and orderly exploitation of mineral resources is of great significance to the ecological protection and high-quality development of the YBR. This paper comprehensively uses location quotient, spatial Gini coefficient, exploratory spatial data analysis, and standard deviation ellipse analysis to analyze the spatiotemporal evolution characteristics of mining industry agglomeration in the YRB from 1999 to 2018, then explores the driving forces by the Geodetector software. The results are as follows: (1) The agglomeration degree of mining industry in the YRB shows an N-shaped development trend of first rising then fluctuating decrease and rapid rising again. The overcapacity reduction policies in 1998 and 2016 significantly improved the agglomeration degree of mining industry in the YRB; (2) The agglomeration degree of mining industry in the middle and upper reaches is significantly higher than that in the lower reaches, and the spatial correlation of the mining industry in the YRB has gradually increased. The “high-high” type cities are concentrated in Shanxi and Shaanxi, and the spatial scope is expanding; (3) The spatial layout of the mining industry in the YRB has obvious direction, basically maintaining the "East-West" direction. In the five observation years, all the mining industry center of the YRB are located in Shanxi Province, and the industrial center is moving to the northwest; (4) The core driving forces of mining industry agglomeration in the YRB are mineral resources endowment, government intervention, level of economic and social development and downstream industrial demand. The differences of core driving forces in the upper, middle and lower reaches are significant. This paper provides decision-making reference for optimizing the layout of mineral resources exploitation in the Yellow River Basin and promoting the high-quality development of the energy industry.

In view of the long-term lack of high-efficiency dredging equipment in coal mine sump, based on the research of the domestic and foreign slurry pumps, a new prototype of a slurry pump for coal mine is proposed. In the structural design, the motor is embedded in the pump body and symmetry structure is adopt, so that the pump can meet the two working conditions of full submersible and semi-submersible, and ensure being balance during work and avoid component failure. The characteristics of the pressure field in the flow passage of the pump are studied, and the pressure distribution and the position of the pressure sudden change in the flow passage are found out. Based on the analysis of the velocity field in the passage of the pump, the causes of the vortex at the pump inlet and the impeller passage are obtained, and the improvement of the structure design is proposed. Based on the above study, a delivery pump with large pressure head, moderate inlet and outlet flow rate and pressure is designed, which is suitable for coal mine sump dredging.

Based on the current situation of China's intelligent coal mine construction has made great progress, this paper analyzes the characteristics of intelligent coal mine talents, the current situation of labor structure in the coal industry and the difficulties in the transformation of labor structure in the process of intelligent coal mine transformation. In view of the current situation that the cultivation of intelligent coal mine talents lags behind the actual needs, this paper discusses how to plan the transformation of human resource structure in coal enterprises at the present stage It is suggested that coal enterprises should cultivate intelligent coal mine talents as soon as possible through independent training and cooperation between colleges and enterprises, so as to ensure the benefits of coal enterprises and the employment of coal workers.

In order to solve the problems of big data storage, sharing, processing and analysis in the coal industry, and to improve the management and auxiliary decision-making level of the coal industry, the author took the intelligent upgrading and transformation of Guizhou coal mines as an opportunity, through literature research, field research, expert consultation and other methods, based on The B/S structure designs the overall architecture of the coal industry big data analysis cloud platform consisting of data acquisition layer, platform support layer, application layer and access layer, and elaborates the intelligent real-time data cloud platform for coal mine auxiliary production system. Six functional modules including coal distribution, coal planning, scheduling statistics, forecasting and early warning, remote monitoring, and technological innovation were built. Finally, a big data analysis cloud platform for the coal industry was built according to the overall design plan to realize comprehensive monitoring and management of the coal industry . The application effect shows that the platform can provide effective data support for government regulatory agencies, coal enterprise management, scientific research institutions and coal consumers.