According to the topography, industrial park project location, underground coal resource deposittion and through the field survey on the location of mine industrial site provides three schemes, and puts forward three development scheme combined with the location and transportion of coal, the advantages and disadvantages from the angle of technology analysis of the three schemes, from the economic point of comparative rationality the three schemes, after comprehensive consideration and approach to the position of industrial site constraints, the final choice of main and auxiliary position respectively the industrial site and inclined shaft mixed development mode, the conclusion has practical significance for the sustainable development of the mine, Zhundong circular economy industrial park and Wucaiwan mining area development.

Baoshen formula is based on the interaction principle between the surrounding rock，lining，and water. Through the comprehensive analysis of physical and mechanical properties of surrounding rocks， water inflow , water pressure and other factors， the freezing depth and lining structure were identified. The thickness of shaft lining , the vertical section and supporting materials were confirmed in design， and compared with the calculation results of lamech formula.It provide reference for the design of freezing shaft lining in deep water rich surrounding rock.

In order to improve the resource recovery of 1202 (1) working face in Xieqiao coal mine, it is affirmed that the maximum height of the caving zone was 15.12 m, and the maximum height of the fissure zone was 52.78 m by using the methods of theoretical calculation and borehole detecting, and it is preliminarily determined that it was safe and feasible to extend the mining upper limit. The numerical simulation method was applied to simulate the water seepage rule in the overlying aquifer under the influence of adjacent coal seam mining. Numerical simulation study shows that the fissure zone cracks will be connected with the upper aquifer after extending the mining limit, and the water in the loose aquifer will mainly flow into the loose region at the bottom and the influence on the working face is limited under the action of the protective layer and goaf strata compaction. It is feasible to extend the mining upper limit in the field practice, and the economic benefit is remarkable with additional coal reserves 34000 t.

In order to study the influence of 8 seam mining on the upper 11 seam, the methods of theoretical analysis and numerical calculation were used to study the change law of the displacement field and stress field of the upper 11 seam floor during ascending mining. The results shows that 11 seam is located in the curve subsidence zone of 8 seam mining, the coal body has certain damage, but it has a good continuity, and the stress of the upper coal seam is reduced because of the mining of the 14128 working face and the stress decreasing zone has formed; At the same time, the permeability of the 11 coal has increased, the gas pressure has reduced, and pressure-relaxing effect is obvious, and it provides protection for the safe mining of high gas 11 seam. At last, the influence range of pressure relief is calculated.

Abstract：according to more than yuwu coal seam occurrence of coal seam, based on more than yuwu coal six high alley pumping of the measured data and its corresponding working face gas control effect, it is concluded that more than our coal alley pumping high level reasonable horizon, based on a reasonable level at the same time horizon and the corresponding working face gas control effect, it is concluded that more than my high coal alley pumping reasonable vertical horizon. In the N1101 working face, the field application has been carried out, and the effect of gas control has been achieved.

In view of the large depth of coal seam, the strong geostress, large deformation of the roadway and rapid deformation speed in the working face. Based on the analysis of the law of mining pressure in relevant working face, the mining technology and the technical characteristics of the continuous miner, this paper puts forward the method of stowing&mining technology with continuous miner under the high geostress and complex geologic condition for the efficient recovery of coal mining face and the effective protection of surface buildings, and optimizes the mining process parameters according to the field application. The results show that the stowing and mining method with continuous miner can realize the efficient recovery of coal resources under the high geostress & complex geologic condition.

In order to solve the problems of coal frozen in train and coal loss caused by wind during coal railway transportation, the paper presented a scheme of spraying antifreeze to train compartment and spraying dust suppression agent to coal surface during the loading process ,introduced the principle of automatic liquid preparation system and adaptive spraying system ,made the calculation and selection of key equipment. The key technology of the system was specially studied and at last we designed the control system. The system has high degree of automation, strong practicability and has been successfully applied in practical production.

To solve the problems of Liu-zhuang coal mine the east wind well the third aquifer hydrological hole delayed overflow, the freezing parameters of the shaft, the hydrogeological conditions, and the investigation and analysis of the hydrological hole were investigated.The results indicate that The the main reason is the reported of the strata water abundance weak and large porosity and put forward the corresponding methods.

Aiming at the problem of Chen four floor coal mine coal bunker construction steps is various, complex process, process is not easy to connect, By optimizing the design of the coal, Summary of construction experience, Put forward a set of detailed design process, including coal bunker construction procedures and precautions, And the application in the actual construction, Results show, The vertical and circular design, layout of coal bunker, Not only for temporary storage and transportation of the coal mining area, At the same time, fast and efficient construction for the coal bunker, The bunker and service life can be matched with the service life of mining area.

In order to solve the problem of the traditional granular grouting material can’t be injected into deep bedrock with microfissure, grouting with sodium silicate chemical material was adopted for pre-grouting at surface ground. The silicate chemical material was suitable for pre-grouting at surface ground with a low viscosity, good injection, adjustable gel time, high strength of the consolidate body. the gel time which determines the success or failure of the grouting should be studied according to its flowing law . After reasonable formulation selection and scientific construction, success of sodium silicate on pre-grouting at the ground was completed. The result of pressure water test showed a good effect of sodium silicate chemical grouting.

In view of gob-side entry retaining under the hard roof condition, the anchor cable and individual hydraulic prop of roadside active power cutting roof support technology is put forward on the basis of the traditional roadside dense hydraulic prop support. Firstly dense individual props are used to support roadside roof and then the anchor cable is used additionally. When the goaf roof fall, the dense props are gradually evacuated, and a new row individual prop with larger space are supported. The roadside active supporting system composed of new individual prop and anchor cable is established. The support resistances of the single prop and coal sidewall was been obtained through mechanical analysis. Through the field investigation of gob-side entry retaining in Muchengjian coal mine, the monitoring data show that: the displacement between the roof and floor is 125mm and the displacement of the two roadsides reachs 52mm after one mining; And the influence of two mining on the roof and floor’s displacement and two roadsides’ displacement are relatively small, only 40mm, 5mm, respectively. It is obvious that the “anchor cable and individual hydraulic prop” roadway support technology has a good control effect on the stability of surrounding rock in gob-side entry retaining of hard roof.

Empty driftway ahead of working face the impact appeared frequent along the 705 working face of a mine, combined with the mining process of serious 5 shocks appear accident analysis, the static and dynamic load superposition easily induced shock pressure roadway rockburst. On the basis of the control mechanism of the weak structure of the impact earth pressure, this paper puts forward the reinforcement technology of the two support on the basis of the primary support of the roadway, and adopts the high pressure water jet technology to control the pressure of the coal mass. FLAC2D simulation results show that the surrounding rock bearing capacity significantly enhanced, and can form a wide range of areas in the deep structure of weak surrounding rock. The results of field observation in the field of industrial test show that the surrounding rock of the tunnel is well controlled, and the research results provide a certain reference for the stability control of the surrounding rock of the roadway under the influence of mining and other dynamic disturbance.

Aiming at the fully mechanized mining face through the problem of erosion zones in large section, taking Bulianta coal mine 12520 fully mechanized mining face as an example, analyzed and summarized the detection method of erosion zones in the full mechanized mining face with large mining height, according to the method of determining through scouring zone of comprehensive mechanized mining face detection results and summarizes the key technology through scouring zone of comprehensive mechanized mining face, analyzed stratabehavior through scouring zone fully mechanized mining face, fully mechanized face similar geological conditions by providing a certain reference scouring zone.

In chengzhuang coal mine goaf of fully mechanized working face the problem of large gas emission, km deep hole drilling rig technology and form a complete set of equipment, application of goaf roof is test long high directional drilling gas extraction technology; By studying goaf "three zones" gas, distribution scope and design of goaf roof long high directional borehole layout parameters. Test results show that super long borehole directional high gas extraction technology has low drilling construction quantities, location is good, stable extraction, extraction rate increase, the advantages of significant extraction results have been achieved.

In order to roadway ahead of goaf water disaster occurrence and the occurrence of whether accurate azimuth detection, comprehensive advance detection in mine TEM and borehole induced polarization method is put forward, and introduces the technical principle and layout method of two methods, two kinds of geophysical methods were found to exist in front of mining goaf water, according to the detection results of drilling the design and construction of the front, and advance drainage of goaf water. The results show that the comprehensive exploration method of mine TEM and borehole induced polarization method can effectively detect the water content and the location of the goaf, and the results are accurate and reliable.

The rib spalling is one of the main factors restricting the safe and high efficient mining of fully-mechanized top coal caving mining of loose and soft coal seam. Taking the Ⅱ927 working face as the research object, numerical simulation, theoretical analysis and field test were carried out for analyzing the mechanism of rib spalling and the control technologies, putting forward the control principle and control ways for rib spalling, and determining the control scheme and reasonable parameters, which include the adjustment of the supporting working resistance of working face, mining height, working face advancing speed, water injection measures. With the purpose to provide a better theoretical guidance for the production practice in fully mechanized top coal caving mining face of soft and thick seam, and also for other coal mining areas to exploit the coal seams with similar condition in the future. Keywords: soft and thick coal seam; fully mechanized top coal caving mining; rib spalling; numerical simulation

Abstract：In order to prevent rock bumps , the South mining bureau has introduced PASAT-M media CT microquake detection system from Poland for the original detection of stress distribution of coal and rock at the 18th layer of basin floor and the evaluation for bump hazard towards the ground. The research indicates that stress has a good responding relationship with seismic wave which can reflect the distribution of coal and rock stress. This system can make inversion and CT imaging through the seismic tomography technology which can judge the tunnel hazard rapidly and accurately by two-dimensional image for bump hazard distribution. The result of detection and analysis can provide South mining bureau an important guidance for relieving targeted danger which will be useful for preventing rock bumps with precise and high efficiency. The practice on spot indicates that this technology has certain extending significance in the prevention of rock bumps.

Abstract The longwall mining under the room pillars is affected by both the active mining induced stresss and upper pillars’ concentrated stress, leading to instability accidents of road way due to the severe roof pressure. Based on the issues of possible instability accidents of road way in the No.22202 working face in the Daliuta Coal Mine, the methods of numerical simulation were applied to the mechanism of mining induced stress evolution and instability accidents. The result shows that with working face under the coal pillars, the advanced distance of bearing pressures’ peak point will significantly reduce, resulting in the superposition of roof stress and the bearing peak stress. Roof weighting and the superimposed stress contribute to instability accidents of road way. In the 20 m range of the front and back of the edge of the coal pillars, instability of roof movement and stress causes no apparent regularity of instability accidents. With the working face away from the edge of the mining gob after 60 m, the instability accidents will happen periodically because of the obviously periodical roof pressure.

Abstract: The support of extra thick-compound roof is difficult and very easy to cause large area roof fall accidents. In the process of supporting ,damage and fracture of bolt and anchor cable often appear. And the process of roof fall is very fast and lack of warning, which is more difficult to prevent. In order to solve the problem, this paper ,firstly, sorts out and summarizes the definition and characteristics of extra thick-compound roof ,and, secondly, analyses the failure process and instability mechanism and reason of anchor cable easy damage and fracture and the roof caving process is fast. The results show that the reason of anchor cable is easy to damage is that the shear stress is bigger; the main reason why the thick-compound roof is more difficult to support is that: on the one hand, the thickness of strata is smallerd and the majority of the poor lithology, which will make rock easily destroyed one by one and more loose to support expansion force; on the other hand, for the thickness is large, the anchor is not available to reach to the deep stable rock and anchor in cranny rock will gradually failure as the expansion of fractured rock and rock pressure increases; the reason why thick compound roof falling is rapid and lack of warning is that there is one or several layers of hard rock in its internal and the hard rock gradually accumulated relatively more energy in the process of the energy savings and it is active against the surrounding rock deformation and failure. When the energy savings reach to a limit and lead to destroy and the destruction of soft and broken rock cannot bear hard rock which is transferred from the great energy, a sudden collapse occurs; numerical simulation results show that whether the thick-compound roof lithology is good or bad plays a key role in the supporting difficulty degree and grouting reinforcement less rock layer on a support will cause a multiplier effect. "

In order to study relation between nozzle structure and flow field characteristics,the paper establishes the physical model and the mathematical model of the velocity field inside and outside the nozzle. The numerical simulation was confirmed by Fluent-analysis software and the two-phase flow distribution of gas-liquid and pressure characteristics, speed characteristics of the nozzle were obtained.The results show that when the spiral flow reaches the mixing chamber, the water flow is mixed and collided with each other; the axial velocity of the flow presents a "M" shape distribution in the outlet section and air fills in the central area;the tangential velocity of water flow is in the form of "N" shape, and has obvious potential vorticity and vortex core.

Aiming at the shortcomings of traditional mechanical and hydraulic full-face broken belt catcher, a new type hydraulic system of broken belt catcher is proposed. The combination and design of cartridge valve and the shuttle valve is used to make accumulator charged and draingaged, which realizes that the broken belt is captured. The working principle on the hydraulic system of broken belt catcher is introduced. The influence of the key parameters of the accumulator and the hydraulic cylinder on the system capturing performance is analyzed based on AMEsim, which provides a theoretical basis for the design and optimization of the hydraulic system.

　　In this paper, the analysis of the impact of the performance of Li-ion battery use and safety factors, centering on Li-ion battery safety and effective use of the target put forward energy management system of security solutions, and in relation to the solutions safety test, at the same time, this paper also analyzes the battery charging test data for model, provides the corresponding theory basis to improve the mine explosion-proof vehicle lithium-ion battery technology.

How to correctly evaluate the total porosity and fracture porosity of coal is very important to the exploration and development of coal bed methane (CBM). There is no effective method to evaluate the CBM according to the log data. In view of the methods of NMR experiment to obtain porosity cost much and make by spot measurement, so we propose the new method to effectively evaluate the fracture porosity of coal seam by electrical resistivity logging data and NMR experiments，in which the porosity from the resistivity is corrected by the NMR data , based on the pore structure and fracture porosity of coal seams from NMR experiments and applicability of Archie formula in the coal. The results showed that the T2 spectrum clearly showed two peaks, The left peak indicates adsorption pore, and the morphology change is small after centrifugation; the porosity calculated by Archie method largely reflects the fracture porosity of coal seam; The precision of coal fracture porosity corrected by NMR experiments is higher.

As a key component of the crane, the performance of steel wire ropes has a significant influence on the safety of the hoisting equipment. Because of the complicated space structure of wire ropes, traditional stress analysis is difficult to accurately solve the mechanical properties. Therefore the finite element method and fatigue analysis softwares are used to explore the stress distribution and fatigue life of the wire rope in lifting weights. The 3D solid model of the 6×6+WS structure of stone cross strand wire rope for a certain lifting equipment was built by SolidWorks 2014.After that, the model was imported into the ABAQUS6.14-1/ACE. The finite model of the wire rope was established and analyzed to obtain the stress distribution under the 0.2% deformation in the axial direction. Finally, combined with FE-SAFE, the fatigue analysis of the steel wire rope is carried out to obtain the fatigue life distribution. The results show that the stress of the steel wire rope presents a space spiral distribution and the maximum Von-Mises stress is located on the core wire of the wire strand whose fatigue life is the least. Steel wire rope manufacturers should take measures to improve the strength of core steel wire. If the performance of core wire can be improved, the life of wire rope will be greatly improved as well.

Shenhua coal liquefaction asphaltene (CLA) has the disadvantages of low melting point and tendency of liquid phase carbonization which is not conductive to the preparation of super activated carbon. By the KNO3 oxidation and KOH activation method, the super activated carbon with a surface area over 3000 m2/g can be prepared. Besides, the characteristics of as-prepared asphaltene, carbonized asphaltene and activated carbon were measured by scanning electron microscopy (SEM), the Nitrogen adsorption-desorption measurement (BET), and the Infrared spectroscopy (IR). The result shows that peroxidation could refrain from phase change of CLA in the carbonization process, leading to the production of carbides with primary pores and abundant active sites of functional groups. This establishes a material and structural foundation for the preparation of super activated carbon. When m(KNO3)/m(CLA) is at between 0 and 0.4, the surface area of activated carbon increases at first and then decreases with increase of KNO3. When the peroxidation temperature is at between 250℃ and 400℃, the surface area of activated carbon increases at first and then decreases with the rise of temperature, the inflection point is 350℃. When the peroxidation time is at between 30mins and 60mins, the surface area of activated carbon gradually increases with the time being longer. After 60mins, the extension of the peroxidation time has little influence on the specific area of activated carbon.

In order to solve some problems be safe, economical, efficient and promoted of domestic continuous miner in Area of Non Shendong Mining, Get rid of the constraints of "Shendong mining mode ", introduced the development and manufacture of the complete sets of equipment for the domestic production of continuous mining machine in the last 5 years, Summed up the advanced technology experience about application in the equipment of independent innovation in non-Shendong mining area, Especially the different key processes of continuous application in different geological conditions and the application range of the continuous miner is widened. Finally put forward t a huge potential for development in the market segments and equipment stability on equipment, coal mining methods and pressure control, the need for further innovation and breakthrough and needs furture

The disadvantages of current emulsion supplying methods are discussed, the mathematical model of hydraulic support movement is established and the flow-rate demands of different operations on hydraulic support are analyzed. In order to meet the different flow-rate demands of different operations on hydraulic support, a new emulsion supplying method is proposed, which is based on the identification of the types of the operations on hydraulic support and can provide a matching flow-rate. For proving the reasonability and superiority of this new emulsion supplying methods, AMESim and MATLAB/Simulink are employed to accomplish a joint simulation of the emulsion supplying process.

Designed a control system of hydraulic coupling group for scraper conveyor based on the configuration technology, which realized the real-time data acquisition, processing, over-run alarm and work control of the scraper conveyor .Introduce the hardware composition and software design of the control system .The simulation results show that it can meet the expected requirements and is convenient for the control and maintenance of scraper conveyor.

China Pingmei Shenma Group is a large state-owned energy and chemical company, is the country's first batch of circular economy pilot enterprises, over the years, long-term adhere to the development of circular economy strategy, make full use of various resources, point, line, surface multi-level system Promote the realization of industrial chain, circular economy, efficiency, scale, intensive, harmonious and benign development, and strive to build a resource-saving and environment-friendly harmonious enterprise, to achieve a comprehensive, coordinated and sustainable development. To explore a suitable for their own characteristics of a comprehensive, coordinated and sustainable development path. This paper mainly introduces the main characteristics and practices of the "3 + 2" sustainable development circular economy model of the group, and puts forward its own opinions and suggestions on the current problems in the development of circular economy. , Can provide a reference for the transformation and development of similar enterprises.

In view of coal mine underground mining affected by space constraints, is one of the high-risk industries, so the coal mine safety management is the priority among priorities, through research and analysis, more than 90% of the accidents is people's unsafe behavior and the risk is not found and found by postprocessing is not timely, so risk management is the main means of coal mine safety management the new model is the coal industry safety management in china. Taking Bulianta coal mine as an example, introduces the application of risk management in the coal mine safety production, mainly through establishing and perfecting the system of responsibility for production safety, strengthen the identification and control of hazards in depth, establish the examination system of hidden trouble and unsafe behavior investigation and rigorous assessment of cash, strengthen the business security system to provide protection for coal mine safety production.

This paper analyzes the advantage of support vector regression (SVR) in the projection of carbon emission and establishes the model of projection of carbon emission based on SVR. The model with good learning and generalization ability is established through using the data of Hebei’s carbon emissions and influence factors from the year 1990 to 2013 as samples to train and test and then predicts Hebei’s carbon emissions from the year 2014 to 2020. The results show that Hebei’s carbon emissions have an increasing tendency from the year 1990 to 2020 as a whole, increasing stably and less during the period of 1990-2000 and 2010-2020 but faster from 2000 to 2010; there would be also adding up to 4441.76 tons carbon emissions in Hebei between 2014 and 2020 and keeping a stable increase rate about 3%. Finally according to the data of projection, this paper provides some suggestions which are beneficial to the Hebei’s carbon reduction.

From the accident data analysis in construction industry, the existing safety management system has been the bottleneck. The innovation of safety management methods and means has become an important content of the work of safety management in 13th Five-Year period. This paper analyzes the Market competitive advantages and disadvantages of coal construction enterprises, puts forward the realistic obstacles of "the significant reduction of the total amount of accidents"，and clears the direction of safety management and control by accident data analysis. Then, Safety management and control work requires a full control of the construction site information. Moreover, this paper designs the construction safety management framework based on the perception of IOT, and describes the application mode of the perception information and shared information. Finally, this paper expounds the role and simulation scenario of basic function, protection function and auxiliary function modules, enrich the specific contents of safety management prevention, and put forward the implementation strategy of construction safety management framework.