The paper introduces the layout innovation of ground production system of Buertai mine and the adjacent mines,including Cuncaota №1 mine, Cuncaota №2 mine and Liuta mine, relying on Buertai mine yard,it makes use of innovative ideas，which is a combined layout of four mines' ground production systems,and it means that four large mines share the same ground service system, including coal processing, storage and transportation, power supply, water supply and drainage, heating, system control and equipment management, material supply, logistics services, so, it can greatly reduce the investment, and improve the efficiency of the mine production, it also achieve the scale economies , and reduce land occupation and environmental pollution. The project is a successful innovation and practice, and it can also provide a good　reference to master plan of mining area with similar conditions.

Deputy gentle downhill slope for the distance of trackless transport, easily lead trackless transport equipment brake system failure to produce accidents, this paper proposes measures to reduce losses caused the accident, one of the main measures to avoid setting the gentle slope of the deputy insurance chamber, the text incorporated by practice theoretical research survey data on hedge chamber composition, location selection, length and slope selection, chamber section settings were calculated design, draw the corresponding conclusions for similar design reference .

The “horizontal-arc-inclined” cut layout in the caving fully mechanized top coal face of steeply dipping and extra thick coal seam has achieved good effect. Basing on the existing condition of NO.1125 steeply dipping, unstable and incompact coal seam face in Changshanzi colliery. Comprehensive analyzing the characteristic of arc segment parameter, the adaptability of supports and conveyors, as well as the phenomenon that supports have inclined in the upper-arc. The measure that the cut layout before is transformed into the line layout have been implemented to eliminate the supports inclined accident and suitable layout relatively is line layout in the caving fully mechanized top coal face of steeply dipping and unstable incompact coal seam in Changshanzi colliery.

Abstract: Due to the increase of open-pit exploration,shortage of land resources and the influence of large geological structure, so many old dumps have to increase capacity,that induced the security problem increasingly prominent．Taking a waste dump of Antaibao open-pit coal mine as a case,the feasibility for the capacity increase and heightening of the dump was analyzed under the influence of anticline structure by the methods of basal bearing capacity analysis and limit equilibrium analysis．Through the optimization analysis, the generally flat width narrowed to 65 m, the overall slope Angle increased to 19°and the residual displacement space increased to 334.8 million m3.Effectively alleviate the problems of internal waste dump can't timely follow up and serious insufficient displacement space,ensure the normal advanced stripping work.Research methods and results worth widely using for reference.

This paper discussed on the determination of capacity for main shaft Quantitative belt conveyer, analysed all kinds of influencing factors of the conveyor 's capacity. The discussion is useful to the design of the large coal mine main shaft loading system.

This paper do a brief introduction about the technology reformation of the honghe freight station, the project includes coal storage, loading and transport system. The original production mode of this freight station is coal open-air stacking, fork-lift truck loading railway, modified for closed coal storage yard and fast loading system. Renovation project completed, it reduces the production cost, reduces the coal transportation damage, reduces the pollution to surrounding environment, improves the efficiency of the rail loading, and increases freight station capacity. The article offers some suggestions to the other similar projects, such as how to transform the traditional coal freight station for the high efficiency and environmental modern coal logistics hub.

Freezing method sinking is special construction method to reinforce the unstable alluvial layer and the loose water-bearing rocks by freezing the groundwater temporarily using artificial refrigeration technology. With the development of deep coal resources in east China coalfield, the application of high strength and performance concrete technology in deep alluvium freezing method sinking engineering is urgent. Therefore, the technical difficulties of high strength and performance concrete technology in deep alluvium freezing method sinking engineering are summarized. The research process of high strength and performance concrete are also reviewed. China building materials academy have obtained remarkable achievements in the research and application of high strength and performance concrete technology in deep alluvium freezing method sinking engineering. Complete set of technology and process has been developed. The relevant technology and process has been used well in multiple demonstration projects, such as ZHAOGU west wind well. These achievements provide the technical support for the design and application of high strength and performance concrete in the deep alluvium sidewall, having a good application promotion value.

Based on the principle of No-Pillar Mining with Gob-Side Entry Formed by Advanced Roof Caving, The idea of the test is put forward in the condition of shallow depth in the west of our country. By selecting the typical Shen Dong mining area of Ha Lagou coal mine 12201 working face. In the field, a constant resistance anchor cable is put forward, application of blasting technology, The hydraulic single steel frame after processing the word block rock and a series of experimental. And according to the experimental design scheme for construction. The construction of a total of 968 blasting holes is carried out in the field, installation of constant resistance cable 291,Cutting roof roadway 580 meters. After monitoring, the roadway sink is 50mm, and the roadway is in good shape, and the roof is stable. The results of the test surface: the automatic cutting and unloading of the roof and unloading pressure can be applied to the special geological conditions of the western mining area. It Will provide an important theoretical basis and experimental basis for alleviating the tension of mining, mining, high ratio of mining, waste of resources and so on.

In order to look into the best form of cross-section structures and corresponding support measures in weakly consolidated soft rock roadway, this research is done aiming at exploring special conditions on various of cross-section forms and support measures which are difficult to ascertain. The whole research is based on the relative engineering research of weakly consolidated soft rock roadway of Yili No.4 Mine, using FLAC3D numerical software to analyze the surrounding rock deformation and rock plastic zone distribution in weakly consolidated soft rock roadway under complicated geological conditions in different cross-section forms and corresponding support measures. The results show that choosing different cross-section forms has greater impact on the surrounding rock deformation and rock plastic zone distribution in weakly consolidated soft rock roadway, and the rectangular section impacts them most seriously. By compared the surrounding rock deformation amount with rock plastic zone distribution of five cross sections, selecting horseshoe section for further analysis of the surrounding rock deformation and rock plastic zone distribution in weakly consolidated soft rock roadway under different support measures, and compared with site monitoring results, the supporting measure of second anchored mesh and guniting + prestressed anchor support which is applicable to weakly consolidated soft rock roadway has been put forward. Research results on support measures in weakly consolidated soft rock roadway has important reference value, as well as provide a strong technical support for the same project design and construction.

Abstract :analyzed the drilling hole gas drainage effect (2225 workface across seams, K2 air way lay out drilling field, pump K3b coal seam gas across seams), it is found that hole sealing technology directly affects gas drainage. The paper, based on the former technology and combined the context conditions, put forwards a newer improvement project of conveyance road (includes drilling layout, sealing material and depth, grouting time, pre-plugging depth) and tested. Adopted the new project, the cost and drilling pressure relief time rise a little, but pressure –relief gas drainage increase a lot, which makes that the drilling field pre-pumping concentration now is always 4.4 times of former one. The test result showed that it has a great guidance to improve drainage efficiency in the site.project of return airway and conveyance road (includes drilling layout, sealing material and depth, grouting time, pre-plugging depth) and tested. Adopted the new project, the cost and drilling pressure relief time rise a little, but pressure –relief gas drainage increase a lot, which makes that the drilling field pre-pumping concentration now is always 4.4 times of former one. The test result showed that it has a great guidance to improve drainage efficiency in the site.

Drilling and mechanical injury accidents are huge threat of gas drainage drilling and efficient construction in underground coal mine. Through in-depth analysis of drilling accident mainly common phenomenon and reasons such as sticking and pushing drill, drill pipe torsion fracture, deviation, connected pores, gushing and orifice in drilling rig gas drainage drilling construction in underground coal mine, on this basis, given guidance processing method, and analyze the reasons for the drilling rig construction of seven rigs common mechanical injury accidents, propose preventive measures. This paper has a certain guiding significance on safety construction of gas drainage drilling in underground coal mine.

Abstract: According to the reality of goaf gas drainage in early and normal stage for sihe coal mine, simply analysis resource of goaf gas. Based on the vertical distribution of mining, design and construction of lowly-located drilling, mid-located drilling, highly-located drilling, floor interception drilling, convergence to succeed, with the mutual interaction extraction goaf gas sources, each borehole reached and exceeded the expected results, the formation of four drilling gas drainage model to improve the gob gas drainage efficiency, to some extent, solve the gas problem.

Abstract: To solve inclined thick seam of coal caving mining sulfide overrun technical problems effectively, a comprehensive analysis of the emission from hydrogen sulfide, and reasonable and effective control, reduced hydrogen sulfide on the human body. This paper focuses on coal shearer cutting speed, strength and caving coal miner cutting the top / bottom and pull the slide step coal concentration on the hydrogen sulfide emission studies, experiments show that the amount of hydrogen sulfide emission with coal cutting speed increase the intensity of coal and increased discharge. By spraying the absorbing liquid and advance the comprehensive management of pre-injection and other means to resolve the absorption liquid Upper Corner, return airway hydrogen sulfide overrun problems, the results show that when the shearer cutting coal shearer at the 77ppm hydrogen sulfide drop to 12ppm, reducing the efficiency of 84.4%; hydrogen sulfide from the front chute above 470ppm down to 62.6ppm, reducing the efficiency of 86.7%; return airway of hydrogen sulfide by the 110ppm down to 15ppm, reducing the efficiency of 86.4%, through an integrated and coordinated management, vulcanization hydrogen disaster prevention achieved breakthrough results.

Forced caving measures are always employed during initial mining period in fully-mechanized working face in Jinjie coal mine, in order to eliminate the safety issues such as massive overlying rock strata suspend on the gob. In this paper, strata behaviors of 31111 fully-mechanized working face in terms of hydraulic fracturing in first caving of Jinjie coal mine was analyzed and the following conclusions can be reached. (1) Hydraulic fracturing technology can effectively weaken the the roof integrity and roof caving presents the characteristics of laminated, graded and gradually. Thus the damage caused by massive rock strata caving suddenly during initial mining was avoided. (2) Through fracturing in the roof strata, dynamic load and impact load applied on the hydraulic support was reduced. (3) The strata behaviors and roof caving indicate that hydraulic fracturing technology can take the place of blasting in first roof caving and avoid safety issues caused by blasting and insure the safety of initial mining.

Xin tian mine is located in guizhou karst development area, the karst aquifer affect mine safety production. Mine by means of controlled source audio-frequency magnetotelluric method exploration, water test, connectivity test and water the comprehensive geophysical and geochemical exploration methods such as chemical analysis found out mine embedded depth of karst development depth can reach 412.82 m, karst in the plane are controlled by topography, structure is obvious; Field boundary F1 fault for a guide water fault, is mine hydrogeological boundary, fault in mining field with hydraulic conductivity, is limestone aquifer to the mine stope filling water channel, atmospheric precipitation has a supply of aquifer, and indirectly to the stope supplies. The mine through the research on the rules of karst development, for mine offer a scientific basis for comprehensive control of karst underground water disasters.

The study goal was to optimize layout of dainage boreholes, and enhance efficiency of drainage boreholes. The study was focus on the law of coal 8# roof aquifer drain in the No.2 north district of Donghuantuo Coal Mine, theoretical analysis was carried out on the water enrichment regularity of aquifers in coal 8th roof under the control of syncline structure. There were 32 boreholes for drainage arranged and six influence indicators. Studied dynamic feature of water vs time and calculated their pearson product-moment correlation coefficient to boreholes water yield. The result was the mining fracture zone would conduct the aquifers above coal 5th; aquifers 0~30 m above coal 5th was drained to decrease its water head of geological structure developed, hydraulic connection was good in the dip direction of stratum, but bad in strike direction. It is appropriate to decorate layout drill socket along the roadway, and to staggered arrangement upper and lower roadway. Borehole location and the initial drainage time during the six influence indicators had most important effects on borehole water yield. The relationship between borehole direction and the fracture strike direction also had significant effect on borehole water yield. Dsigned drainage beginning time should be suitably advance 8 to 10 months.

The feed property is a fundamental factor which affects the screening performance. In this research, the water and slime contents of the feed were adjusted through artificial water and slime addition. The screening performance was evaluated by screening efficiency and fines content in the oversize product. The test results showed that the increasing of water content made fine coal particles wet and bond together, thus decreasing the screening efficiency and increasing fines content in the oversize product. The increasing of slime content influenced the screening performance of fine particles, which decreased the screening efficiency slightly and increased fines content in the oversize product. High water and slime contents of the feed both had an adverse effect on the performance of dry screening.

To solve the problem of environment pollution caused by coal gangue stacking，coal gangue from Datong Tashan Coal Mine was chosen as the research object. Based on the analysis characteristic，a feasible technology to separate coal gangue from kaolin rock was studied. The results show that，with the movable-bed jig separation process，kaolin rock yield reaches 26.67%，ash 72.02%，separation effect is favorable. Successful application of the separation system has important significance to improve the environment of mining area，meanwhile creates considerable economic benefits for the enterprise.

according to the unusual failure law of surrounding rock, the failure destabilizaty of coal pillar ,the failure of abandoned roadway and roof of workface seek when coal pillar is mining. Research shows that: when the size of cross-section of abandoned roadway is relatively small, the failure of abandoned roadway is is less affected by the working face and the failure of coal pillar is mainly affected by abutment pressure and is less affected by the existence of abandoned roadway. When the size of cross-section of the abandoned roadway is relatively big, the failure of roof of workface is mainly affected by stress concentration cause by abandoned roadway and the destabilization size of of coal pillar is relatively bigger which is determined by abutment pressure and stress concentration. Theoretical analysis shows that: the bigger of the size of abandoned roadway is ,the bigger of the destabilization size of the coal pillar is. Locate observation show that the stress on the coal pillar enlarge and the number of wall caving and nicking enlarge because of the decreasing of the width of the coal pillar.

Based on the research of prevention techniques on the deep island coal pillar coal bump, a theoretical framework for the prevention and control of high energy rock burst with a defects group is established. The mechanism of apply the engineering and the fracturing defect to prevent and control the rock burst is revealed by the numerical simulation and mechanical analysis. On this basis，the prevention and control of rock burst with a imperfection group measures used in T1391 working face in Tangshan mine in Kailuan，it could validly change the impact energy release law of coal seam and avoid the occurrence of rock burst accidents, and ultimately ensure the safety of working face mining.

The empty space in coal mines can not only destroy the minable seam and improve the cost of production, but also lead to water inrush, endanger the mine safety. For the various problems and potential security risks of coal mines brought by falling empty space, a new early warning method of empty space in coal mines is put forward to analyze the risk level of falling empty space, which is based on the dynamic tracing and fuzzy comprehensive evaluation. First of all, by means of the dynamic tracing, attributes of empty space like space sizes are extracted and its rates of change are also calculated. Then, a model is established by the fuzzy comprehensive evaluation method and based on the data of attributes and rates of change do the fuzzy comprehensive evaluation. Finally, comes to a conclusion of the risk level of empty space. Application experiments are operated to Dongshan Coalmine of Taiyuan and experiment results show that: the early warning method can effectively predict the risk level of empty space in coal mines in the practical engineering, and can also provide effective technical support for the early warning of cavitation diseases in mine engineering, the project reconstruction and treatment design.

The mine air regulation is an important content of ventilation and safety management，the mine air volume adjustment methods is reviewed，taking the mine of DaShuCun as the research object，and taking the mining area as regional branches，the equivalent and simplification graph of the mine ventilation network is drawn，when the regional branches increased resistance，the correlation of each mining area air volume and total air volume with the wind resistance change in the region increased resistance branch，their amount and ratio relations were studied. The results showed that: each mining area air volume and total air volume is closely related to the wind resistance change in the region increased resistance branch，the increase resistance mining area with mines and other mining area air volume variation meet the amount plus relationships. Compared to the local branch increased resistance adjustment，this method can grasp the change of the total air volume of the whole mine mining area，and it is more helpful for mine airflow of macro regulation.

Analysing for correlation of coal rock physico-mechanical parameters and three lateral resistivity logging parameters in LuoYuan mine field. The results show that the correlation of three lateral resistivity logging parameters and rock physical parameters is low, but the correlation of three lateral resistivity logging parameters and rock mechanics parameters is significant. Linear regression analysis was carried out on parameter of high correlation, and select the regression equation with higher significantly and small residual error as a prediction model of rock mechanics parameters.Applying the model to quantitative prediction of rock mechanics parameters in During inspection hole. By contrast with predictive values and measured values, it is proved that the prediction model has a strong practicability.

In order to study the influence of oxygen consumption rate of residual coal at goaf, and to prevent the fire of Coal Mine.Take Lin Nancang as an example to reaserch the residual coal of oxidation characteristic by the experment of Slow oxidation test ,using control variable method to study the influence of coal rank and residual coal environment on oxygen consumption rate.At the same time , with the Matlab software to analyze the two factors simultaneously, establishing the oxygen consumption velocity coupling model . It turned out that,in the control of coal temperature, oxygen concentration were unchanged, the oxygen consumption rate showed a change of law, the temperature and oxygen consumption rate is exponential relation.As the result of CO hosted in the coal seam of Lin Nancang,it made the degree of metamorphism coal change,the coupling of temperature and concentration is a significant linear regression, it conform to the actual situation.Therefore,reducing temperature and oxygen concentration, changing the degree of coal metamorphism, help to reduce the occurrence of fire accidents.

Must solve the two problem of adjusting wind resistance and wind delivery when making the scheme of performance measurement of fan. Must contrast, complement and combine the various methods when making the scheme. This article iIntroduces in detail five kinds of adjusting wind resistance and the mode of the frequency fan, introduces three kinds of measurement and theirs merits and faults of pressure and wind delivery by wind instrument and velocity pressure and differential static pressure and so on. By the contract of the experiment, should select firstly the velocity pressure method, between the velocity pressure and differential static pressure when the two methods for wind rate are adaptive alternatives.

Abstract: Scraper conveyor is one of main electrical and mechanical equipment in the mining face, and its reliability has an important significance to production safety. In scraper conveyor reliability life analysis, the linear parameter method is often used to estimate life in traditional Weibull distribution model. But the error of prediction results is larger due to the nonlinear characteristics of fault data. In this paper, a nonlinear BP parameter algorithm is proposed to optimize the model parameters for the scraper conveyor reliability life prediction. Research results show that the BP parameter optimization algorithm has small life prediction error, and raises the accuracy of the scraper conveyor reliability life prediction.

In order to over come the disadvantage of the traditional power supply method in the complex hazardous environments,a new type of power supply method that can replace the traditional intrinsically safe power supply system is proposed.The system uses the laser as energy carrier and uses optical fiber as transmission to achieve the long distance power supply. And a simulation of the optical fiber parallel transmission of energy and information is completed to verify the possibility of parallel optical fiber transmission of energy and information. And the power supply system is designed to achieve a long-distance optical power.

Abstract：In the process of mine production and transportation, we will sometimes ignore the influence of air temperature in the mine working face on belt’s breaking strength, so that the belt breaks and the transportation of coal flow system breaks off, which not only brings hidden danger to safety production in coal mines, but also seriously affects economic benefits. We use rank sum test from statistical testing methods to analyze and investigate the transportation condition of belt conveyors in certain mine air temperature. Trough data calculation and arrangement of belt’s breaking strength in the mine working face, It is concluded that air temperature in the mine working face in not overrun and overrun of two kinds of cases,the belt’s breaking strength has a significant difference.The method not only can judge safety stability of the working face, but also provide stricter indicator for management of safety production in coal mines to ensure that the process of coal transportation becomes faster and safer.

To ease the growing conflict in the mining , reduce driving cost and improve the level of mechanized digging. The disadvantage of "the method of lengthening every meter comparative cost” which is the most commonly used in the mechanization operating line was analyzed. Due to the deficiency of AHP for giving weigh in fuzzy comprehensive evaluation, through theoretical analysis, spot investigation, data processing, quality, cost, period, labour intensity, degree of safety, work environment were considered as the decision variable in the paper. By mean of Entropy theory, the model of selection on rock tunneling driving machine mechanized working line based on information Entropy-fuzzy mathematics was formulated to guide rock drivage. The model was applied in in second mining area Belt Lane at Huozhou mine and has achieved good economic and social benefits.

Abstract: Coal-gasification wastewater needs economical and efficient pretreatment technology to improve biodegradability, due to the high COD and biological toxicity. The sample water gets from dephenolization and ammonia stilling sections in coal gasification process of an industrial enterprise in Inner Mongolia. The experiment studies the influence of reaction conditions in Fenton oxidation step and coagulation step separately, and discusses the reaction mechanism. Under the optimum technological conditions, the COD removal rate is 80%, the chroma removal rate is 98.5% and B/C is increased from 0.17 to 0.45. Our new technology improves biodegradability obviously and reduces the pollutant load sharply for the following biological process, which will provide theoretical support for the development of coal-gasification wastewater treatment.

With coal slime water as the research object and studied the flocculation effect on the concentration coal slime water, flocculant dosage and pH for bioflocculant GSY-9 which was produced by azotobacter chroococcum. The results show that flocculation activity is at its highest when the following conditions are met: slime water concentration 30 g/L and a flocculant concentration of 80 mg/L. The flocculation activity can be up to 82.93% of bioflocculant at the time. Flocculant GSY-9 kept the high flocculation activity at the range of pH 2.0~8.0.The main components of bioflocculant GSY-9 were polysaccharide and protein through the analysis of FTIR. Flocculation experiment of the coal associated minerals indicate that the order of flocculent effect from large to small for bioflocculant GSY-9 on the three kinds of mineral is kaolin, illite and quartz. The further experiment of absorption rate for bioflocculant GSY-9 on miners was showed that the flocculent effect of kaolin and illite were far superior to quartz. Zeta potential curve of minerals indicate that bioflocculant is partly composed of anion groups and its flocculating function is based on bridge not on the neutralizing charge.

In order to study the influence of different blade incidence to contra-rotating auxiliary fan, numerical simulation are carried out at different working conditions by using Fluent. And simulation models are verified by experiment. Finally, efficiency and shaft power in different conditions are analyzed. Results show, if blade incidence is increased，the pressure and operating efficiency is also increased. Changing the front or behind Blade a same incidence, the difference between them is a little, but operating efficiency is more related to behind Blade incidence. Adjusting the Blade incidence will change the load of impeller, behind Blade incidence doesn’t have much affect on front, and the power of both stages will change when changing the front blade incidence.

Abstract: For reflection signal processing complex and measuring length limited of audio frequency stress wave method applied in the metal anchor non-destructive measurement.Developed a new non-destructive measurement method based on the half wave dipole antenna theory,by adding a metal reference line,with the single metal anchor pole equivalent to half wave dipole antenna,using the AD9913 generates a sinusoidal signal 0~100MHz is coupled into the anchor pole,obtain the first corresponding signal resonance frequency,in accordance with the relationship between frequency and wavelength,and the wavelength and the length of the antenna,calculate the length of the metal pole.In the whole measurement process,circuit for signal phase characteristics do not need strict constraints,for more than 10m long bolt of actual measurement,absolute error can be controlled within 5 %.

By analyzing the historical hidden dangers inspection data of a certain coal mine and combined with accident-causing theory analysis shows that coal mine hidden dangers mainly hid in first-line workspace like the work groups, and also is the important cause which will lead to coal mine accident. So it is much necessary to establish a hidden dangers inspection system which take work groups as the basic unit. The current coal mine hidden danger inspection system can only satisfying the work teams demand or above demands. This paper use handheld terminal and closed-loop theory to establish a coal mine work groups safety management system and practiced in a certain coal mine. The study results show that the hidden dangers inspection system which take work groups as the basic unit can meet the requirement of first-line hidden dangers inspection, made comprehensively closed-loop coal mine hidden dangers inspection a reality, effectively increased the safety level of coal mine production.

it’s necessary to set up an emergency system based on collaboration, improve the ability, which is propitious to decreasing accidents, reacting to unexpected disasters more efficiently and reducing the loss of lives and property. To set up the SCEMS models, including the 4 layers and 35 indicators. The recent five-year synergetic degree in Heilongjiang Province is obtained through the careful calculation. The results show that the cooperative system is increasing year by year. The simultaneous analysis of synergetic degree model of index puts forward the countermeasure and suggestion of coal mine emergency management based on collaborative.