Mineral resources exploitation and utilization scheme is one of the most important documents for mining enterprises to obtain mining license in China, whose compilation and approval plays an important role in orderly development and reasonable utilization. Based on compilation practices of coal mineral resources exploitation and utilization scheme, this paper analyzes and discusses compilation essentials such as compilation purpose, mine field boundary, reserve calculation, scheme comparison, comprehensive utilization, safety suggestion，etc. It will provide some reference significances to compilation work.

The development of gas tunnels is comprehensively analyzed in recent years in Guizhou, combining with the gas accidents occurring in tunnel construction at domestic and international. Based on the prevention and control of coal and gas outburst in coal mine, the outburst prevention technology system suitable for gas tunnel be put forward, through the implementation of regional and local “four in one” comprehensive outburst prevention measures on a gas outburst tunnel in Guizhou, the tunnel achieved safe uncovering of coal and no gas overrun and outburst occurred; When the tunnel construction institutions gas disaster prevention and control strength is insufficient, could cooperate with the qualification institution, which can strengthen the prevention of gas disaster in construction institutions, ensuring the effective implementation of double "four in one" comprehensive outburst prevention measures, achieving accurate prediction, effective measures, reliable inspection, adequate protection.

Abstract:Starting from the Lianghuai mining area in the deep mine,Briefly pressed deep mine chamber support technology status,characteristics and the content, method and technical path of the research. This article through to Kou Zi Dong mine main shaft skip loading chamber engineering geological condition analysis,the selection and optimization of the loading chamber design of supporting scheme, put forward (rod, anchor cable) and shotcrete, steel and reinforced concrete combined support form the straight wall rib beam reinforcement, the support effect and economy increase.

In order to avoid the secondary damage caused by the mine steel wire for rope slot liner wear, this article introduces the coal mine lift locomotive tank device. According to the site usage make the installation plan and the support, the coal mine based on PLC design pulley turning device control, set the pulley deflection and vibration performance test device and radial feature detection device, experimental platform is established. Pulley for experiment study found: pulley from the most to the left of the fourth pulley to the right on the first day of the wheel, the diameter of the pulley of the most prominent position is more and more big, the concave of the diameter of the location from the fourth pulley to gradually reduce, the next day to the first day when the wheel increases slightly, but the wear of head sheave present the trend that more and more serious. According to this, the cutting mechanism based on the turning device, eliminates the wear of the wheel liner, and guarantees the safety of mine hoist.

Considering the ability and treatment effect of the craft “coagulation precipitation and filter” which is traditional, the paper firstly took the Zhangjiamao coal mine water as an example, and analyzed the characteristics of the mine waste water and the reuse destination after treating. Then based on “coagulation precipitation and filter” and integrated equipment technology, it designed a new craft that the swirl coagulation clarifier process is high efficient and integrated. And analyzed the treatment effect and operating costs. The result shows that the major pollutants of mine water in Zhangjiatmao Coal Mine are SS and COD; the quality of the effluent water treated by the craft can reach the relevant standards, so it can be used for the yellow mud grouting, underground fire sprinkler and daily life water in coal mine; the treatment cost of per ton of mine water, this craft than the "swirling coagulation clarification + mechanical filter + disinfection" saves 0.22 yuan.

Aiming at the problem of coal storage capacity can not be calculated accurately in coal preparation plant, this paper which analyzes coal accumulation state in coal storage facility, establishes three-dimensional model by using BIM technology. The calculation method can not only solve the problem of accurate calculation of coal storage capacity, but also learn from the accurate storage capacity of other materials in the calculation.

Abstract: In order to solve the problem of unable to finish hard floor repair with air picks，based on the safety and high efficiency construction requirement of the surrounding rock control in the mine roadway，introduced the idea of “ static cracking technology” auxiliary control floor heave in hard floor repair and proposed the technical solution of rapid mechanized construction in roadway floor heave. Through analyzing the working principle，technical characteristics and construction method of static cracking agent，the roadway repair machine was applied in Shanxi Xinyuan coal mine. The application results showed that the set of construction technology and methods could effectively improve the roadway repair mechanized operation level，could reduce the labor intensity，could improve the efficiency，which can provide reference and guidance for the similar coal mine floor control and repair．

Madaotou coal mine is replacing mine of resource depletion in Datong Coal Mine Group Co.Ltd. It is mining C3-5 combined coal seam of the main quarry carbon system, because the roof coal thickness is thick at the belt crossheading in the working.face of gateway,boom-type road-header can not meet the basic requirements of efficiency in construction technology and support parameters. In order to increase the speed of gateway of large section in extremely thick coal seam and make sure the quality of roadway, MB670 intellectualized driving and anchor machine is used for tunneling instead of the boom-type road-header. According to the project that the combined supporting of bolt-mesh- anchor+ steel belt was put forward, and support design and Construction Technology of belt roadway of 2404 working face were optimized, the results showed roof convergence was 45mm and both shrinkage was 47mm after optimizing, the support rate was increased obviously and the cost of support material was reduced evidently, not only was implemented the safe, fast and economic tunneling, but also provided the experiences and references for safe and fast tunneling in similar coal mines.

In soft thick coal seams with soft roof and floor strata, rock masses surrounding the large span open-off cut experiences drastic failure degree. Supporting difficulties in such roadways is greatly improved. In order to realize surrounding rock control with such bad conditions, failure characteristics and corresponding supporting method have been researched in this study by using theoretical analysis and field measurements. Due to soft layers inserted in the roof strata, rock strength is seriously deteriorated and thus, failure degree and region of the roof strata is enlarged. At the same time, top coal is thick and soft, leading to frequent roof fall in the open-cut. Based on the failure characteristics, a combined supporting technique is proposed. Active and passive strengthening mechanisms involved in the technique are explained. With the proposed method, load-bearing capacity of both support structure and surrounding rock are efficiently utilized. After that, supporting parameters for the large span open cut are further put forward. Then, the supporting effectiveness is in situ investigated. The results show that roof subsidence is controlled and supporting load provided by cables increases to a large value quickly. The surrounding rock stability of large span open-cut is promised.

Due to the complexity and diversity of rock mass engineering, the problem of high stress and soft rock roadway support is still outstanding, and the deformation and failure mechanism of surrounding rock needs to be further analyzed. Taking XinYang mine as an example, the paper analyzes the failure mechanism of high stress and soft rock roadway from the aspects of the strength characteristics of surrounding rock, rheological properties of surrounding rock, the shape of roadway section and the design of support scheme. Secondly, based on engineering geological conditions and deformation and failure mechanism of deep soft rock roadway in XinYang mine, a type of high strength combined support technology is proposed, namely: anchor injection + anchor net spray + grouting + U-shaped steel bracket. The results show that this technology can not only ensure the stability of surrounding rock and supporting structure of high stress soft rock roadway, but also can control the deformation and deformation of surrounding rock and obtain good supporting effect.

Shan Coal group Ling Zhi da Coal Industry Co., Ltd. 15202 face transport along the groove driving roadway is affected by the lateral support pressure and tectonic stress of the adjacent 15206 working face, the roadway damage deformation is serious. Through theoretical analysis, this paper studies the failure mechanism of roadway in fractured zone, and analyzes the lateral bearing pressure of the working face by numerical simulation, at the same time, the specific reinforcement support measures are taken. The results show that the lateral support pressure peak of the adjacent 15206 working face reaches 8.2MPa, the stress concentration coefficient reaches 1.52, the stress peak position is 8m from the edge of Goaf, in which the 6~18m range is the stress-increasing area, and the section coal pillar is affected by the mining of 15206 working face, Combined with the fault caused the coal pillar internal crushing, the strength decreases, causes the coal pillar and the coal pillar side floor to have the serious deformation destruction. After the implementation of reinforcement support scheme, 15202 face transport groove can maintain long-term stability for the face service.

Zhaogu NO.2 coal mine uses a 1000 m drilling machine to carry out the gas control model of "drilling instead of rock drift", and the technique bottleneck of the gas control model is the fixed-point and closed sampling technique of the super deep?drilling . Through the development of the super deep?drilling sampling device to solve the technical problem of fixed point and airtight during the super deep?drilling sampling, the field application proves that the maximum sampling depth of 595m, the successful rate of 91.7% and the coincidence degree of the parameter measurement results are 89%. The one-off overall evaluation of super long section has been realized, which solves the problem of controlling the effect of coal and gas outburst in directional long drilling , shortens the cycle of gas treatment, and has significant safety and economic benefits.

Abstract: Based on the theoretical research and field practice of parallel operation mining process of continuous coal mining machine,proposes a balanced mining theory characterized by improving the efficiency of continuous coal mining machine and optimizing the labor organization process.The difference of excavation speed and support speed of roadway is analyzed by the principle of integration,differences in the length of various types of roadways,difference in walking distance of continuous coal mining machine,effect of the Progress of Each Work Point on the Yield of Coal Mining Surface.Determination of parallel working process of working face from the angle of dynamic equilibrium.Field practice shows that the process speed difference of continuous coal mining machine is effectively solved by the balanced mining process.To achieve close integration of processes.The coal mining speed of the working face increased by 10 %.

This paper mainly introduces the process and mechanism of serious water and sand Inrush in sub-inclined shaft of Jinjitan coal mine, the principle, process of disaster management. The study found that the repeated cycling of large tonnage vehicles resulted in multiple ruptures of the floor, and the liquefaction of the sand behind the wall was the fundamental cause of the water sand disaster in the inclined shaft. In the emergency stage, the scheme of “crib+grouting” is adopted. In the later stage of reinforcement, the scheme of “U-Steel shelter+grouting” is adopted. When all treatment finished, 2 set of mining equipment were installed and recovered successfully in the inclined system. Increased water flow, cracks in the floor and sand gushing do not appear anymore as a result. These remediation measures provide a good reference for similar disaster prevention and control.

This paper expounds the background, institutional framework, connotation and operational mechanism of the integrated operational anti-freeze vehicle management system in Shenhua Group. Through comparing and analyzing the unloading condition of the two own ports during the period of the anti-freeze vehicle in the last three years, suggests that the implementation of integrated operational anti-freeze vehicle management system has created huge economic and social benefits.The number of the frozen vehicles in two own ports decreases about 60% in the last two years; The efficiency of the integrated operation has been greatly improved, and the number of unloading vehicles has increased by 27.4% in the two own ports; The proportion of frozen vehicles dropped from 3.6% to 1.1%.

Based on the cooling demand and actual conditions of the coal mine, a new type of water cooling technology through gravity is put forward for the first time combining with the water-distribution of the mine. 1MPa hydrostatic pressure by elevation difference is used to overcome resistance of water supply system and take away the heat generated by the refrigerating unit. Compared with the traditional closed cycle cooling technology, the technology does not need heat transfer equipment, so the cooling system is simple and equipment investment is less. The equipment power is just 50% of the traditional technology and achieving the effect of saving energy and reducing consumption under the premise of meeting the refrigerating unit cooling requirement. It provides a new solution to solve heat hazard of small coal mines.

Abstract: Hazard of water inrush and shaft accidents including overlying aquifer and goaf water,which threaten safe production of coal mine seriously.Therefore,the accurate observation of the height of water flowing fractured zone will provide theoretical basis for the preventionand control of water disaster in coal mines.The paper introduces the methods of observing water flowing fracture zone hight and make feasibility analysis to its.Based on this,the method of observing water flowing fracture zone hight of compound goaf is introduced and applied it to 22105 and 42106 working face of some coal mine.Good observation results are obtained.

Aiming at the frequent occurrence of dynamic disasters in coal mine engineering sites, the disaster precursor information is difficult to predict. Through the laboratory tests, studies have been conducted on the acoustic emission characteristics of different lithologic coal-rock materials, revealing the damage characteristics and acoustic emission characteristics of different lithologic coal-rock materials, and obtaining precursory information of rock destruction. The results show that the macroscopic damage characteristics of different lithologic coal-rock materials are basically similar, but the destructive stage, damage process and damage characteristics present a certain degree of differences; the acoustic emission eigenvalues of different lithologic coal-rock materials are different, but the evolution rules are roughly the same. The specific expression is that the acoustic emission in the compaction stage is "stable and increasing". In the stress elastic phase, the acoustic emission is "stable silence", and the acoustic emission in the stress elastoplastic stage is "rapid change". In the process of reaching the critical point in the elastoplastic stage, the short-time "quiet period of acoustic emission" is presented, which is also consistent with the critical moderation theory and defines it as Disaster "precursor information point".

Identification of mine water inrush source is of great significance in mine water hazard control. The six index of Ca2+、Na++K+、Mg2+、HCO3－、Cl－、SO42- were selected as variables water samples. Combining principal component analysis and Bayesian discriminant simplification to build water inrush identification model. The water quality analysis data of the Cenozoic loose beds, coal-serial sandstone and Taiyuan Formation limestones in Panji No.2 Mine were used as training samples and prediction samples, including 24 training samples and 11 prediction samples. The results show that the correct rate of water in the loose layer is 81.8%, the correct rate of sandstone water is 83.3%, the correct rate of limestone water is 85.7%, the overall correct rate is 83.3%, and the reliability of the discriminant results is high. At the same time, the principal component analysis and Bayesian combination water inrush recognition model compared with Bayesian model shows that the combination of principal component analysis and Bayesian model can effectively eliminate redundant information and make the discriminant results more rapid and accurate.

through the study of the physical field characteristics of the transient electromagnetic two field response, the original data is extracted and analyzed. The electrical characteristics of the observation window are studied. The starting point of the observation window and the end point of the late two field observation window are determined, and the maximum effective observation range in the detection distance is determined. Through the TemProcess fine interpretation technology, high resolution apparent resistivity results are obtained. Through the application of engineering cases, it can be seen that the transient electromagnetic fine interpretation technology can greatly improve the vertical resolution of transient electromagnetic, and the abnormal delineation position is highly consistent with the actual exposed position, and it is of great significance to the prevention and control of water damage in the goaf.

In recent years, grouting is usually applied to reinforcing surrounding rock of roadway and preventing infiltration and water plugging, but grouting technology and grouting theory has lagged behind engineering practice, especially mechanism of grout osmotic did not make substantial progress. This paper starts from the single fracture rock , the model of single fracture model is established by using numerical simulation software of COMSOL Multiphysics, the changing law of grout’s diffusion distance and seepage pressure is studying under different water cement ratio, grouting pressure,and crack opening variation degree. Some conclusions and beneficial effects have been obtained by numerical simulation, and the research results can be used to guide grouting engineering practice, and the grouting effect can be quantitatively evaluated.

Abstract: the fact that the location of personnel in coal mine is not precise, this paper studies the location and monitoring technology of underground personnel in wireless network based on ZigBee, and proposes a Trilateration- GSA algorithm based on RSSI to receive signal strength for precise location optimization. Through the platform of the ZigBee wireless network, getting the location information with multi group forecast multilateral location algorithm, and then through the gravitational search algorithm (GSA) for data optimization, so as to reduce the influence of special underground environment of location information, and then realize the precise location of underground personnel. Using maltab to simulate the environment of the coal mine and to carry out the simulation test, according the test data to error analysis, test results show that this algorithm can improve the accuracy of monitoring real-time location of underground personnel, provide technical support for underground personnel management, with good application value.

Nozzle atomization characteristics and the design of dust removal device directly affects the tunnels atomization effect of the dust, A two-phase flow nozzle is designed and manufactured, and a complete set of dust removal device experimental platform. Carried out under different spray condition parameters of atomization characteristic experiment and the characteristics of the different nozzle spray dust effect experiment. Studies have shown the particle diameter decreases with the increase of gas pressure, increase with the water pressure, and the nozzle has good atomization performance in a certain range of gas-liquid ration. Along the transverse direction is almost the same in the flow field, is gradually increasing along the axial direction. And the experiment found that the dust removal efficiency decreased with the increase of the particle size of the fog drop, and the removal of the respirable dust had a good effect when the particle size was less than 10 microns. The results provide theoretical basis and key technical support for the use of two-phase nozzle and the better application of mining dust removal device.

Abstract: The hunting conveyor as research object, design the 3D model and the physical map of hunting conveyor, mathematical description of movement patterns of Serpenoid curve of conveyor based on hunting, and carries on the discrete design and time domain expansion, using MATLAB software to find the optimal parameters of interval turning movement of the conveyor system. The hunting conveyor movement, turn left, winding turn right three conditions for the motion simulation analysis, obtained the frames of different conditions under the influence of the variation of the angle between steering. Finally, according to the frame of the hunting conveyor turning movement of the steering angle characteristics experimental study on the hunting vehicle turning conveyor, the experimental results verify the validity and rationality of the turning motion control parameters. This research will provide a theoretical basis for the research of belt conveyor for hunting turning movement, and provide a theoretical basis in the production layout, the actual operation of the belt conveyor for hunting.

Improving donor-hydrogen capacity of recycle solvent has been one important aspect of the direct coal liquefaction(DCL) process, and hydrogenated polycyclic aromatics are the main effective compositions of recycle solvent. In hence, selective hydrogenation of polycyclic aromatic hydrocarbons is the effective measure to promote the donor-hydrogen capacity. This paper detailed the hydrogenation routes of polycyclic aromatics. And the effect of catalysts and reaction conditions on hydrogenated products were also summarized. The more ring in aromatics, the more difficult it is to hydrogenate. It is beneficial to produce the hydrogenation intermediate with CoMo, NiCl catalysts and optimizing the process conditions. However, the process of hydrogenated polycyclic aromatics is still being developed. Besides, the hydrogenation process is the first-order reaction and the hydrogenate rate of the first ring is the fastest. The hydrogenation equilibrium constant decrease with the rise of temperature. By combining thermodynamics, kinetics and molecular simulation, it is feasible to generate highly efficient hydrogenated aromatic hydrocarbons.

Due to its easy maintenance, scalability, on-demand and other advantages, public cloud is recognized as the future direction of the development of information technology industry, more and more coal companies began to focus on it. According to most of the core elements for the cost of coal enterprises, combined with the practical cases, discusses the traditional way of software and hardware, electricity, manpower, the whole network access costs, etc. And access to public cloud server instance costs, compared to two KPI in size, so as to help coal enterprises to choose the network is built, put forward the new idea of informatization construction in coal enterprises.

According to the definition in MT/T207-1995, the casting and forging pin-track rail which is widely used in China is classified into the type of flat pin rack rail(pin-track rail for short). It points out that MT/T207-1995 is imperfect in structure, parameters and technical requirements. In addition, according to the development of China's standardization system, the deficiencies of MT/T207-1995 in testing methods and testing rules are pointed out. In order to guarantee the advanced and normative nature of the standards, the necessity of the MT/T207-1995 revision was studied, and according to the above problems, the related modification methods and detailed technical requirements are given.

Aiming at the present problems in the process of underground gas pipeline installation and demolition work in the complex, this paper designed a special gas pipeline can solve the problem of hoisting equipment, reduce the labor intensity of the workers. Secondly, from the perspective of structural design, the equipment for the analysis of structural strength based on the mechanical analysis, in order to meet the requirements of structural strength, the structure of the device has large design margin, which can be light weight. In this paper the particle swarm algorithm is applied to the lightweight design of the structure, a lightweight structure design model based on particle swarm optimization algorithm, and the optimization calculation is given a set of safety and economy of the dual attributes of structural design parameters.

The crusher has become an integral part of the coal washing technique. The crusher has complex working conditions in the crushing process. So its safety and reliability are the focus of the study. This paper presents a new type of crusher tooth that’s double key location and easy to dismantle, and analyses the force of the crusher at all points during crushing of the material. And the actual design parameters are given to calculate the specific numbers of each load. Combining with four different conditions in the process of crushing material, using the finite element analysis software analyses the stress and deformation of crusher in the using process.

In order to solve the problem of silt accumulation at the tail roller of belt conveyor in coal mine, the paper contrasted the simple cleaning method at present stage, pointed out its shortcomings, put forward the design scheme of auto-cleaning device with two stage spiral transport and expounded the working principle and structure characteristics of the device. The related calculations of the two stage spiral transport were conducted according to a certain type of the belt conveyor tail roller. The overall structure design of the two stage spiral transport auto-cleaning device was made using SolidWorks software, and the overall structure diagram was given. An effective solution had been provided for auto-cleaning the silt and thrown material at the tail roller of belt conveyor in coal mine．

Abstract：By describing the development situation of coal industry in recent years，the present situation of high-quality development of China's coal industry in the context of supply-side reform is analyzed. The problems that restrict the high-quality development of coal industry are studied from three aspects: debt problem, employee settlement problem and ecological environment problem. Put forward the path of high-quality development of the coal industry in the new era，including the transformation of old and new kinetic energy and the elimination of major risks. Finally，the countermeasures and suggestions to promote the high-quality development of coal industry are put forward from three aspects.

This study analyzed the formation process of coal path dependence and reflected the dependence of the national economic development by ten-thousand-yuan GDP as coal intensity. Based on the panel data of 41 industries from 2003 to 2015, the impact of technological progress, industrial structure, energy alternative, fixed asset investment rate and employment on coal dependence were examined. The results show that the technological progress and reduced investment in fixed assets have reduced coal dependence in industries, particularly heavy industries. Energy substitution has a significant impact on the industry's coal dependence. Decline in employment significantly contributes to the decrease of coal dependence in light industry. The industrial structure shows a positive impact on the heavy industry.