In order to realize accurate prediction of gas emission rate in fully mechanized coal face of closed distance coal seam group, in order to constitutive equation of coal gas emission as the theoretical basis, the calculation model of gas emission rate of coal wall , the calculation model of gas emission rate of fallen coal, the calculation model of gas emission rate of remaining coal in gob and the calculation model of gas emission rate of the adjacent coal seams were established, combining with characteristic factors of gas emission source in fully mechanized coaf face. By the prediction model gas emission rate of 9209 and 14205 fully mechanized coal face in Shangshe coal mine and Shaqu coal mine was calculated, and the predicted value and the measured value of statistical error were 2.60% and 4.92%,on this basis, By the prediction model gas emission rates of 9209 and 14205 fully mechanized coal face in different Annual output of coal were predicted. The research shows that gas emission rate of 9209 and 14205 fully mechanized coal face increased linearly with the increase of annual output of coal, and gas emission rate of the adjacent coal seams is the most significant, and the prediction model has a certain practical value in predicting gas emission rate of fully mechanized coal face.

In order to solve the problem of coal processes of mining and tunneling particularly become unsmooth, to solve the disasters of the serious deformation of the surrounding rocks, the rock burst, the rock and coal burst, the coal and gas outburst by the stress concentration of the coal block coal pillar in the present stage coal mining system, we proposed the method of no-pillar and no tunneling mining with gob-side retaining and Shearer cutting Tunnel mining System. This essay introduced the principle and theoretical analysis of this new technique, and the shearer cutting Tunnel technique, the roof cutting and pressure relief technique, the overlying strata structure of roof cutting and anchor rope beam Supporting theory, and the workface special equipment are given. According to the geological condition of Nanliang coal mine, the product system of the new technique was given including tunnel arrangement system, subsidiary production system such as power supply system, transportation system, ventilation system, we were get the cutting heights and cutting angels of the roof by using FLAC3D numerical simulation software, according to the theoretical analysis and the field tests, get the key parameters of blasting hole intervals and gob-side entry retaining supporting. Through field industrial experiments the Technique of gob-side retaining and shearer cutting Tunnel mining system was succeed, the tunnel which shearer cut was effective, the gob-side retaining by roof cutting was stable. Through the economic analysis of this two mining methods, the new technique is concluded that the cost reduction and efficiency increase obviously, which provides a new economic and effective theory and technique for no-pillar and no tunneling mining in long wall face.

Based on the design and construction of the Hongqinghe mine, the article comprehensively considers the scheme for mine well drilling from shaft elevation, main shaft equipment, hoist winch single power, auxiliary wellbore diameter, cage size, new freezing technology, and development plan layout. And the selection of lifting methods, discussed the main shaft lifting system and auxiliary shaft construction techniques and other new technologies, new processes, combined with mine resource conditions optimization and development program. The successful implementation and production of this mine has a strong reference for the design and construction of similar mines in China.

Abstract: Most domestic open-pit coal mine has had a long history of underground mining, so left a large number of untreated mined-out area within the scope of open-pit coal mine, which makes up the serious threat to the production safety of the open-pit mine. The existence of them has brought serious safety hazard to the normal production of open-pit mines. Taking goaf group of mined areas in east-open pit coal mine of PingShuo for the research object in this paper, establishing coal geology model and goaf group model by using geophysical methods and 3DMine mining software, according to the actual situation of stripping stages, the author will do research by stages and layers on stability of overlying rock mass in goaf. The research results are significant for guiding the actual production of open-pit mine , protecting the safety of life and property of operators , machinery and equipment.

In order to achieve a reasonable increase of the capacity of the main shaft of a coal mine, a case study was conducted to upgrade the existing conditions of the main shaft of a coal mine. The paper discussed how to change the way of unloading by changing the way of unloading and using the skip in the form of skip instead of the skip in the form of external power plate gate to shorten the promotion rest time and shortened the cycle time, increased the feasibility of enhancing the system's production capacity.

In order to monitor the working state of Shearer in the fully mechanized face of coal mine, a wireless low power coal miner monitoring system is designed. The system through the micro energy module will collect the vibration energy of the shearer during operation after the conversion for use of power system, and the data acquisition module will work the shearer's acceleration and temperature information collection, eventually transferred to the CC2530 wireless transmission module for wireless transmission. After testing, the power consumption of the system is only 3.6mA under the 3.7V power supply, the temperature error is less than 0.5 degrees, and the acceleration error is less than 1%, so that the system can effectively monitor the state of the shearer.

In this paper, the technological process system of Wujiagou to Nanyangpo water conveyance project of Nanyangpo coal industry Co. LTD.was briefly introduced.On this basis, the design selection, structure and reliability design of the automatic control system were demonstrated in detail.Six major functions,which were global preview, pressure automatic adjustment, water level automatic interlock protection, automatic mud removing, water hammer protection and pipeline leak detection of the control system were discussed in detail combined with the long-distance water conveyance process characteristics.In the discussion of pressure automatic adjustment, the concept of low-value selector functional module was introduced, which could selectively output low-value signals from all the input signals in order to realize the automatic adjustment of drainage pump inlet and outlet pressure.

The critical technical problems in the process of long distance pipe-jacking in collapsible loose layer are discussed in this paper. The position of the work wells shall be reasonably determined based on the stratum formation, site layout and the position of pipeline, to avoid the interference between ground and underground construction. The structure and size of the work wells shall be determined according to the requirement of the construction techinique and burial depth of the pipes, on the basis of that, the number and spacing of the intermediate station for various construction techniques are optimized and the corresponding calculation for jacking force is carried out based on the spacing of the intermediate jacking station. In addition, the deep foundation treatment along with the displacement and solidification of the mud lubricant mud during the pipe-jacking process are adopted, to eliminate the collapsibility of soil in the pipe-jacking construction area. The long-distance pipe-jacking tunnel construction in the collapsible loose layer could be realized through the above-mentioned comprehensive technical measures.

This paper analyzes the difference between the design coal sample and the actual coal sample in Qinglongsi coal preparation plant, and points out the existing problems of the coal washing process. The original design of the process is preparation of sized raw coal. The raw coal is firstly sized by the dry screening, then mixed and the smalls are removed by the lump coal stroke with wet screening, and finally the smalls are preparation by dense medium separation after the wet screening, which causes a series kinds of problems due to the serious coal mud conversion, which can not be realized in the current production. It can be completely realized by preparing of sized raw coal and shortening the overwater time of the raw coal, at the same time, it can bring good economic benefits for the coal preparation plant.

Prefabricated construction stagnates in field of coal preparation plant construction, although it is getting well-developed in the field of China's civil building. The application in the field of coal preparation plant construction is only in used in the design of workshop and lack of prospective thought, because of the problem of the design concepts and technological development. Combining the development of new coal preparation technologies in recent years，the use of all-system prefabricated steel structure incoal preparation plant must be reviewed by experts. the paper looks ahead the further of the coal preparation plant design and the further of the all-system prefabricated steel structure used in coal preparation plant.

According to the shaft check drill data of Wucaiwan No.1 coal mine, the paper analyzes the geological and hydrologic conditions of the stratum that the auxiliary shaft crossing, makes a comprehensive comparison of the construction methods of the auxiliary shaft, puts forward the construction method suitable, which provides technical support for safe and rapid construction of the auxiliary shaft, the conclusion has a realistic significance on the construction and production of the coal mine.

In the progress of comprehensive mechanized excavation of subinclined shaft with high dip-angle and large section,there are so many problems such as shaft dip-angle bigger than mechanical tunneling machine、the shaft section cannot be formed at once,mechanical tunneling machine reverse is hard, and so on.in this paper,we put forward the solve methods:make artificial platform,increase the friction between the mechanical tunneling machine and the floor,add oil cylinder for reverse,reform the belt conveyor and other technical measures,as a result:these methods increase the roadway driving speed by 2m/day.It indicates that the measures be taken have obvious effect,and it has some guiding significance for the construction of the same type of subinclined shaft.

Aiming at the problem of roadway support and rock stability of 31203 mining face in ShiGeTai coal mining, Through field measurements and numerical simulation methods,Study on the damage characteristics of the leading section under the influence of primary mining along the main transportation laneway，The results show：the main transportation laneway’s roof support is oversupply, 30 meters ahead of the working surface is affected by it, The features of non-uniform destruction of the submarine appear within 15 meters in front of the working face, Upper and middle parts of the coal wall need to be reinforced and supported,and the weakening scheme of roof support and reinforcement scheme of coal wall support was proposed, the safe production of coal mines was ensured,andthe reference for similar roadway surrounding rock control was provided.

In order to solve the deep mining water hazard prevention problem and to optimize the regional control scheme, the deep mine water detection and governance techniques of Xingtai deep mining area regional control engineering based on 3-D directional drilling was studied. The 3-D directional borehole structure and portioning holes layout were introduced to improve the flexibility and to manage mining process and mine water control process orderly. Study results shown that the control system can control the existing water inrush points, reduce the probability of water inrush, and timely block the new water inrush points to provide technical guarantee for the whole deep mining process. Research results can provide a reference for deep mine water regional control engineering design and implementation.

With the increase of coal mining depth, the permeability of coal seam will decrease, and the gas content will increase continuously. In order to solve the problem of high gas and low permeability coal seam gas drainage problem, search for effective, economic, applicable to a wide range of Antireflective and new method for CO2 coal seam presplit ar engineering test in the new company and security Jiuzheng Xiang wa Bei Buddha South four mining area, through the gas drainage concentration, flow rate, drainage radius and other parameters of observation the analysis results show that CO2 can be pre splitting gas average concentration increased from 9% before the pre splitting pre splitting after 19%, play a very good antireflective effect; effective radius of pre splitting effect within 30-50m range in CO2; pre splitting blasting hole, around the area of stress concentration the shock wave, in the process of communication, there are wave cyclic stress releasing stress concentration and stress release, this law affects CO2 pre-splitting effect.

When the indicators of the coal spontaneous ignition index system exceeds the predetermined warning range, the hidden dangers appear to rise or develop from stable to fluctuating and upward trend, indicating that the continuous measures in the prevention and control measures are nearly out of order. In order to achieve the purpose of fire extinguishing, it is based on the precondition of safety. Immediately change the direction of measures, redistribute projects such as drilling, grouting, cold nitrogen, and wind pressure regulation, in order to make positive and negative feedback and influence on the index system and determine the even-vector variables at the nodes. The results show that this is similar to a derivation process, which allows the hidden danger line to develop to the expected under the control of the mathematical function of the “guided function”, so that the hidden danger can be controlled.

This paper analyzed the typical failure of the extensible belt conveyor in Shendong mining area in recent years (2014-2016), studied the failure rule; analyzed the Failure reason; And the concrete measures to reduce the failure are put forward. aims to improve the reliability of the equipment operation, and has a very important reference significance to the operation and maintenance of the extensible belt conveyor.

In this paper the design of the controlled water hammer gate valve is put forward in view of the phenomenon that the water hammer is caused by the unreasonable strategy of the valve in the process of mine water discharge. The gate valve speed control based on the closed loop control theory realizes the application of various control strategies, so as to prevent water hammer. Through numerical simulation, experimental simulation and field verification method, it is verified that the controllable water hammer gate valve can achieve various shutoff displacement curves, and has good stability and reliability. It provides technical support for waterproof hammer equipment.

Abstract: In the process of coal exploitation, a large amount of mine water was discharged and evaporated, resulting in the loss of water resources. It is of great social significance to study the utilization of mine water resources and improve the utilization rate of mine water.In view of the traditional model that construct the treatment facilities of water supply and sewage on ground, the author puts forward the underground grading processing technology and concentrated brine storage technology to high mineralized mine water of Lingxin Coal Mine, it has changed the traditional mine water processing mode, effectively achieved the double zero target of the " zero surface clear water into the well and zero underground sewage up the well, saved the ground water, protected underground water resources. It has also effectively ensured the sustainable development of the mining area, opened up a new technical way for the treatment and utilization of mine water.

Abstract: The paper carries out the relevant technical studies on Resonant Impedance Type Active Power Filter (RITHAPF) for the harmonic mitigation and reactive power compensation of a 6kV mine hoisting system. The structure and mathematical model of RITHAPF is analyzed in this paper. A discrete decoupling mathematical model for two-level APF is constructed and the current tracking controller is devised based on discrete SMC. Systematical simulation results demonstrate that the proposed RITHAPF is capable of compensating harmonics and reactive power for the 6kV hoisting system and effectively suppresses the hoist start overshoot.

Some formulas of packing body load design were complicated and parameters were hardly determined, which could make gob-side entry retaining failure or materials waste. By analyzing overlying strata structure in gob-side entry, packing body loading characteristics based on overlying strata structure and ALPS were proposed and simplified estimating formula of packing body’s stable load in later stage of gob-side entry retaining under different strata was put forward. The method was successfully verified in gob-side entry retaining under medium hard and hard roof, providing experience for design of packing body in gob-side entry retaining.

In order to explore the unlocking mechanism of rockburst induced by stress wave of high energy release in deep coal and rock mass near the mining space, based on the analysis of the energy storage and release characteristics in coal and rock mass around the mining space, through establishing the stress wave propagation model in coal mass, the instability of coal-rock structure nearby the mining space was studied using the solid stress wave propagation theory. The results indicate that the deep coal and rock mass is the energy storage element which can produce energy release and the nearby coal and rock structure is the locking body that controls the energy release. The shear failure and the tension failure are formed induced by stress wave of energy release in deep coal mass, thereby the unlocking process for the deep energy release is completed and the lateral restraint resistance suddenly drops in the coal seam. Unlock mechanism of stress wave can better explain two types of rockburst on the spot: rockburst of material instability and rockburst of slip-faulting. The results of the study have a certain significance to deepen the understanding of the whole process of rockburst and the control of rockburst.

In order to study the influence of process parameters of fully mechanized caving face on top-coal caving ratio, orthogonal experiment design and numerical simulation, the significant size and the optimal range of each of the five factors affecting the recovery of top coal by the range analysis method and variance analysis method. The results show that the influence of each parameter on the smashing degree of top -coal from the largest to the smallest is the mining height, action points of resultant forces, caving step distance, roof control distance, support working resistance, the reasonable parameters of fully mechanized caving face in the mining height of 2.8m; the distance between the action points of resultant forces and the front of the support is between 2.6 and 3.7m, and the larger value should be taken;with two passing cutting and one caving 1.2m step; optimum roof control distance is 4.6~5.2m; and the reasonable working resistance is determined to be 5000 kN.

Aiming at the serious rib spalling problem of the full-mechanized mining of coal seams in the water- bearing thick coal seam in Kejiagai Coal Mine, the characteristics of the coal wall slice, the mechanism and effect of the deep-hole micro-blasting were studied by field measurement, theoretical analysis and numerical simulation. The results show that the coal seam wall cracks developed vertically after drought water, which makes the coal seam slide laterally in the middle and upper part of the working face; the deep-hole micro-blasting promotes the interlocking of the fracture network in the coal body and enhances the friction between the divided coal blocks. With the cohesive force, it effectively controls the coal wall framing; puts forward and implements the deep-hole micro-blasting technical measures for the large mining height of coal seam with watery thick coal seam, and studies the micro blasting technology, drilling arrangement and installation drug parameters. After the implementation, the maximum rib height of the coal wall is 2.6m, the maximum rib depth is 0.8m, and the width of the ribs is 2.9m. The coal wall rib spalling is effectively controlled.

Gas content is a common index to test the effect of measures in coal seam area. Reasonable and reliable critical value of gas content is the key to ensure safe production. Taking No. 3 coal seam of Zhongling coal mine as an example, firstly, the critical initial value of coal seam gas content was determined by using W-P and W-(K1 or Delta H2) relationship which was obtained by experimental study, combining gas geological data, production data and gas dynamic phenomena. Secondly, through field investigation, the reliability of the initial value of the critical value was examined, and the initial value was reasonably corrected. Finally, the critical value of gas content was confirmed by expanding application. The critical value of 3 # coal seam gas content determined by this method was 10.0 m3/t. The later production showed that the critical value was reasonable and reliable, which effectively guided the mine safety production.

In order to evaluate the water abundance of the study area, and to reduce the dependence of the evaluation results on the hydrographic bore. After making the best of geological and hydrogeological data, four main controlling factors was established, which are aquifer thickness, core recovery percentage, thickness ratio of brittle rock and weathering influence index. BP artificial neural network with autonomous learning, nonlinear mapping ability is introduced into the study, the data of 25 groups of main control factors of the treatment by quantification, normalization as a network of learning samples, taking the measured specific well yield as the prediction target, the simulation of the mapping relationship between the main control factor and the specific well yield has been realized by repeated training. Finally, the trained neural network is used to predict the water abundance, and the sensitivity analysis method is introduced to analyze the sensitivity of the prediction results to the dominant factors.

In order to further understand the stray interference phenomenon of the steel wire rope in nondestructive testing, the electromagnetic detection technology was studied in order to improve the accuracy and reliability of the test.In combination with the working process and principle of wire rope nondestructive flaw detector to detect from the aspects of rope's structure and the working condition, the factors of the clutter of the electromagnetic detection signal are presented,and by using Ansys simulation to analyze the leakage magnetic properties of the wire rope when the non-destructive flaw detector was used to excite the steel wire rope for further verification.Research results show that:The interleaved air gap produced by the spiral structure of the wire rope,The diameter difference between the non-destructive flaw detector and the measured wire rope and the vibration during the operation of wire rope which is the important factor that the wire rope is detected in the signal,and it may have a great influence on the electromagnetic detection signal of wire rope even causes a misjudgment of the detection signal.

In order to extensively understand the motion law of main and floating screen frame of vibrating flip-flow screen, mechanical model and vibration differential equation of the vibrating flip-flow screen are established considering the effect of damping. The formulas of amplitude and phase of active and floating screen frame of vibrating flip-flow screen are derived using complex number method and the method of determining phase through quadrant is also proposed. In addition, the amplitude-frequency characteristic curve and phase-frequency characteristic curve of active and floating screen frame of vibrating flip-flow screen are acquired and the factors that influence the movement of active and floating screen frame are analyzed. Eventually, a proposal is presented that changing the mass of floating screen and adjusting shear spring stiffness accordingly can adjust the amplitude ratio of active and floating screen frame under the condition that the working frequency and relative amplitude are basically unchanged. All of these research results will improve the theory support of the design of vibrating flip-flow screen.

Aming at the vibration problem of the beam and platesin in the coal preparation plant in Handan city matou county.，The electronic equipment in the distribution room has been damaged repeatedly、cracks are found in the structure of the beam and plate，it unable to meet the safety production requirements. The vibration test and analysis technique are used to analyze the vibration of the structure in the coal preparation plant. The analysis results show that the two centrifuges on the second floor are the main source of vibration；The cause of the vibration is that the vibration frequency of the centrifuge equipment is close to the second order self-oscillation frequency of the structure.. it can cause the resonance phenomena. Based on results from the test and analysis, the method of reinforcing is to change the vibration frequency of thestructure and avoid the resonance region., then，the vibration response of the structure is controlled by the specification. The vibration response of the reinforced structure and the electronic equipment is obviously weakened. This example can provide a reference for the analysis method and the design of the vibration reduction in the coal preparation plant which has the problem of vibration.

In this paper a self-made automatic coal gangue sorting device was employed to investigate the automatic image recognition technology on coal and gangue. The gray features of coal and gangue images and their texture features based on gradation co-occurrence matrix were introduced. Besides, the normalized eigenvectors are constructed by using the energy, entropy, contrast, and correlation of the grayscale features and texture features. Finally the BP neural network was used to identify and clarify, and the influence of different learning rates on the recognition rate was experimentally analyzed. The results showed that the comprehensive classification method of texture and gray features based on BP neural network improved the recognition rate of coal and gangue; suitable learning rate improved the learning speed of BP neural network and the recognition rate which reached to 87.5%.

In our country, ground subsidence was triggered by underground coal mining, land damage on the ground was more serious. There were some problems such as low restoration rate of land resources and long time for subsidence land reclamation by traditional technology with the condition of final subsided status. With the suggestion of the theory of concurrent mining and reclamation, the application of concurrent mining and reclamation technology in coal mining subsidence area with high underground water level showed a certain superiority. Concurrent mining and reclamation technology, was to adapt reclamation measures on the ground, while subsidence occurring or not occurred, it was necessary to simulate and analyze the dynamic subsidence on the ground and its impact to land, while the process and disciplines of ground subsidence caused by different coal seam thickness mining were not the same, therefore, it was necessary to study the simulation of the concurrent mining and reclamation, when difference coal seam thickness mining implemented underground. The study employs indoor simulation method, this paper takes the single working face of Dongtan well coal mine in Shandong as the simulation test area, the mining subsidence prediction software (MSPS) is used to predict the dynamic subsidence of the mining units, Based on the ground subsidence characteristics, different concurrent mining and reclamation programs were designed and analysed.

Hujierte mining area is located in the typical grassland, but has been replaced by sand vegetation, meadow vegetation, salt vegetation and other hidden vegetation. Within the study area, the largest number of Artemisia ordosica Krasch constructive species. At the same time has a unique Liuwanlin landscape features. According to the spatial analysis of groundwater depth and vegetation type distribution, combined with the field investigation, it is found that there is a certain distribution of groundwater depth and vegetation type distribution.

In order to improve the reliability of open-pit slope safety early warning, this paper puts forward the group evaluation on risk degree of slope in open pit with the unknown weight and attribute weight of the decision-maker and the attribute value as the intuitionistic fuzzy number, and proposes intuitionistic fuzzy entropy weight method to determine weights,aggregates the evaluation matrices at all levels with the help of intuitionistic fuzzy weighted averaging operator, obtains the intuitionistic fuzzy number corresponding to each observation point , and makes decision analysis by taken it into the scoring function containing two parameters to. Finally, the actual data of the open-pit mine of ShenHua Baorixile Energy Co Ltd is reported as an engineering example in this paper which evaluates risk degree of the slope area by the model method.The study shows that the combination of entropy weight method and intuitionistic fuzzy theory not only reduces the interference of human factors in the risk assessment, but also establishes an effective connection between the impact factor and the evaluation result. The model can be used to guide the stability analysis and mining design of the slope in the open pit.

According to the asymmetric structure,skewed loading, and high failure rate of traditonal roofbolter for underground coal mine roadways in china, one aligned loading roofbolter with rensonable structure,excellent serviceability and high reliability had been designed and developed. The mechanical structure,functions and the features of the roofbolter were introduced, meanwhile, the characteristic on its general arrangement,chain transmission mechanism,oriented means and lubricating method was alse discussed. The practices showed that aligned loading roofbolter had been improved the rock bolting efficiency to achieve the coal mine production requirement.

Aiming at the problem that the mass of jaw crusher is generally heavy at present. The object of study is movable jaw. According to the static analysis, topology optimization, mechanical characteristics and working requirements of movable jaw, the primary selection of design variables for the improvement of movable jaw structure is completed. And according to the sensitivity analysis, the optimal design variables of two lightweight structural improvement schemes are proposed. In the optimization design module of ANSYS Workbench software, an optimization model with the minimum mass of movable jaw as the design objective and the fourth strength theory as the constraint condition is established. The strength, deformation and mass decrease effects of the two improved schemes were compared and analyzed. The results show that scheme one has better lightweight effect, and the mass of movable jaw is reduced by 6.15% on the basis of satisfying mechanical properties, which provides theoretical guidance for the further research on lightweight design ofmovable jaw .

Abstract: Aiming at the problem of high complexity and poor flexibility of wired monitoring system for condition monitoring of mechanical equipment, a design scheme of wireless vibration and temperature composite sensor is proposed based on ZigBee wireless technology. Its RF module, sensor module, power module hardware design and vibration and temperature data acquisition and transmission, power detection software design are discussed in details. The designed sensor has the functions of equipment vibration and temperature data collection and wireless transmission, and can communicate bi-directionally with the designed communication station to form the wireless network system of equipment condition monitoring. The experimental results show that the designed sensor can collect the vibration and temperature status information of the equipment and transmit it to the communication station wirelessly. The sensor's work is stable and data collection is reliable and effective; its transmission distance is up to 18 meters, which can provide effective data support for equipment condition monitoring and failure analysis.

The paper used the impulse response and variance decomposition to research the relationship between coal industrial low-carbon development and the quality of economic growth in coal-producing areas.Result showed that the impulse response function of economic growth’s quality to the low-carbon development of coal industry appears a inverted "U" curve.The influence of the first period was negative,positive later.While the impulse response function of low-carbon development of coal industry to the economic growth’s quality to is a "U" type curve,but the economic growth’s quality always show the negative impact on the low-carbon development of coal industry;The contribution rate of low-carbon development of coal industry to the economic growth is increasing year by year, but it is gradually decreasing in the later period.

In order to assess the fire risk of the mine industrial square, through the analysis of five dimensions of features of industrial square, fire facilities, fire hazards, ability of fire coping and ability of fire management based on literature review and spot investigation, the system of fire risk assessment was established. Weight coefficients of each evaluation indexes were calculated through the method of AHP, and they were modified by entropy method. The fire risk of certain mine industrial square in Shanxi Province was assessed based on the comprehensive weight coefficients of each evaluation indexes. The results showed that the risk grade of certain mine industrial square in Shanxi Province is IV, which indicated that its fire risk is comparative dangerous. In the first grade indexes, the score of features of industrial square was the lowest, and scores of fire facilities and ability of fire coping were the lower. The practical measures and suggestions were proposed, which provided theoretical foundation and technical reference for enhancing the safety management level of the coal mine enterprise.