Through researching and analyzing the drilling complicatedness of special stratum conditions in auxiliary vertical shafts and return-air vertical shafts of Hetaoyu spit, construction of main shaft is determined to adopt freezing methods. Based on the freezing depth and special geological condition of these two shafts, this paper put forward four important factors for shaft design: I. Combined consideration for Ultra-deep freezing shaft wall design and freezing pressure of rock segment.II. The influence of static water level in quifer and load reduction coefficient on shaft-lining load calculation.III. Methods for setting up monolithic pouring shaft wall.IV. Other factors to be considered in the design of Ultra-deep freezing shaft lining structure.

According to solve the traditional cleaning problems of underground sump, combined with zhujidong coal mine site application conditions. The paper introduced a new dredging method of the mine water sump in combination with the traditional technique and the pneumatic diaphragm pump technology, including the basic principle, dredging technique and stated the technical advantages. The practices showed that the advanced technique method would have a good dredging result and a high efficiency, could reduce the labor intensity and ensure the requirements of the mine safety production.

To achieve the safe withdraw of NO. 3207 large-mining-height working face in Huoerxinhe mine at the situation of soft coal seam and complex geological conditions ,it is determined not to reduce the mining height ,and withdraw the face enquipments in the way of making insant dismantle roadway.The reasonable position of the roadway is determined in the base of analyzing the preserving of neighboring main roadway protective piller ,the limit of equipment size,and the mine pressure behave law during the late mining.The reasonable roadway section size is obtained by geometric calculation of the process of hydraulic support recovering. By reforming the process of the network linking and mining technology,a series of support technology suitable for 5.0m large-vertical height dismantle roadway is created.

Aiming to solve the serious problem of spalling in 31201 air income gateway of Cuncaota No.2 Caol Mine, based on theoretical analysis and calculating, a reasonable width of coal pillar was designed, the bolt-mesh support design was proposed as follow, “roof: deformed steel bar bolt + welded steel grid + anchor +πsteel band”, “gob side wall: deformed steel bar bolt + welded steel grid ” , “ solid coal wall: GFRP bolt + double high strength resistant plastic mesh”. In order to verify the reasonableness of this design, FLAC3D numerical simulation software was used. The result shows that roof subsidence and two-sided displacement are so small that can omit under this conditions of the support program. And the horizontal stresses are under zero, it shows that the stresses can not lead to spalling of coal wall. 200 m gateway was excavated, but there were no spalling , and the gateway deformation was small.

Abstract: This paper presents a new automatic emulsion system used in coal mine based on PLC. The system mainly uses the jet pump and explosion-proof solenoid valve, combined with the level sensors and concentration sensor combination to achieve the function. Two sets of liquid distribution solution are designed, the concentration ratio and the ratio of total volume method,so that the automatic liquor can be realized adaptively. Through to acquire and process the sign, the function of intelligent fault diagnosis are developed, and the undisturbed switch between the two liquid distribution solution can be achieved when failure , then the availability and stability of the system are improved.Since the system was put into use, it has achived good effect.

Based on the spray nozzle within the machine as the research object, using a combination of theory and experiment, on the basis of further expounds the atomized dust removal mechanism, the disadvantages of the use of the nozzle are analyzed, and then design a new nozzle structure can overcome these disadvantages. Through contrast test of new and old nozzle structure analysis, can be concluded that the new nozzle with less water consumption, the blocking ability strong, dust removal ability, etc. For the application of this device provides a theoretical guidance.

This paper studies the mine electric power equipment monitoring system based on Hadoop, proposes electricity parameter calculation method and the algorithm of time series prediction based on ARMA model, designs and realizes a kind of specially designed integrated protection system for coal mine involves relay protection, measurement and control, data communication, analysis and prediction of historical data. The experimental results show that the system is an effective and practical, strong expansibility and easy deployment of mine power equipment monitoring system.

Abstract: As the constrained boundary of drawing process after initial top coal drawing, the development process and morphological characteristic of initial interface between coal and rock is vital to subsequent drawing process under longwall top coal caving technique. Based on granular mechanics, mechanical model of initial interface between coal and rock was built combined with the result of 3-D loose top coal drawing experiment and PFC3D numerical simulation. The result after deep analysis shows that the basic reason for the specific morphology of initial interface between coal and rock (the slope of initial interface between coal and rock decreases with the increment of height ) is that different positions on the initial interface between coal and rock undertake different lateral pressure. The drawing interval and the height of broken immediate roof are the important factors to control the morphology of initial interface between coal and rock. This paper expounds the relation between the drawing interval and the size of initial funnel of drawing coal. The paper also proposesd the method to determine proper height of broken immediate roof in order to make the morphology of initial interface between coal and rock be favorable to subsequent drawing process.

In order to determine the reasonable parameters of section coal pillar in Nan Liang coal mine. Based on the theories of coal pillar, the in-situ pillar stress observation and numerical simulation are used to study the project. Field observations show that the pillar load increases gradually as the distance of mining face gets near, it increases rapidly at the distance about 10 m, stress is larger at 4 to 6 m deep away from the roadway surface. Existing 20 m section coal pillar changes not obvious during mining, the coal pillar has not reached its failure strength, the size of coal pillar has the potential to reduce. The numerical simulation show that while 14 m section coal pillar keeps stability under the condition of coal seam buried depth of 135 m, the 13m section coal pillar is easy to lose stability, pillar stress increases the fastest in the working face location and stress is basically stable to the rear of the working face 30 m. The 14m section coal pillar is optimized and has achieved good application effect.

Main Fan is a major mine safety equipment , for the normal operation of the main fan is directly related to the safty of normal production and that of mine workers. Ventilation electrical control system mainly consists of high frequency control system, PLC control system, intelligent host monitoring systems, high and low voltage distribution systems. This paper focuses on the design of electrical control system, whichincludes the block diagram and functions of the system. Besides, the device-dependent parameters of the system are also discussed.

Coal transporting trestle is one of the essential construction of coal enterprises. When the coal unloading through the hole at floor or wall of the coal transporting trestles, form the coal pile behind the bracket. And there is uneven coal pressure existing, causing deformation of the support structure. In order to ensure the continued safety should take some reliable measures for maintenance and reinforcement. In this paper, combining the force analysis of deformation of brackets with practical instances, obtain the structures. The conclusion is perhaps that take a design into quadrilateral, cylinder shaped, and oval tube structure can enhance the bearing capacity of the coal transporting trestles, serving as a reference for similar engineering design and reinforcement.

Product loading Sinotrans scheme Wen Jia Zhuang Coal Preparation Plant by train loading Sinotrans to auto loading Sinotrans, design personnel through the detailed investigation and calculation, the multi-point loading combined with computer automatic control system to solve a variety of products at the same time loading difficulty, but also solve the problem of low measuring accuracy, the difference of traditional automobile loading efficiency.

In order to improve the driving speed of the large section roadway under complicated geological conditions, four influence factors are got with factor analysis in Jinzhuang Company, including engineering geological conditions, excavating equipment, supporting technology and construction technology, construction organizing and management. Through numerical calculation of different support scheme with FLAC3D，better supporting technology and construction technology are proposed. Field application shows that, optimization scheme significantly improves the speed and reliability of roadway support, laying the foundation for fist working face.

Aiming at the mining drift of fully mechanized top coal caving working face disrepair problems in the Steeply Dipping Soft Broken Extra Thick coal seam，Further analysising on the reason for the failure of metal mesh bolt anchor cable and shotcrete technology，Based on testing for the installation of supporting materials of specifications and strength for bolt and anchor cable, anchor cable tensioning strength，Bolt pre tightening torque，Supporting force And other related technical parameters in coal mine underground field .At last formed and practiced the supporting key technology of“Three high，Three small，Three timely，Two Coordinated，A let pressure”，Weak parts strengthening，A large tray support the table about bolt, anchor cable, metal net and spray for the mining drift of fully mechanized top coal caving working face in the Steeply Dipping Soft Broken Extra thick coal seam，maked effective control on surrounding rock of the Deep mining drift.

For the problems of floor uncovering inclined outburst thick Coal Seam with easily leave "Coal Kan"when uncovering coal blasting、difficulty controlling postpile thick, and so on. This text system introducing how use the technology of structural cross-cut heading and safety technical points in working. When uncovering 3# coal in HU Di Coal mine of the main transportation Cross-cut measures tunnel. Result showing that this technology can safely and effectively uncover inclined outburst thick coal seam.

The aquiferous gob had been formed when the gob ,which shaped during coal mining, being filled with water. The disaster of water inrush caused by it is more higher in the proportion of the major accident of the coal mine this years, especially of the old coalfield where exist lots of old gobs. This paper would took an example as a mine in the Jincheng coalfield . using Transient Electromagnetic Method and Audio Electrical Prospecting Method to detecting the aquiferous gob which around the mine, which based on the point that the aquifer layers are easily be detected by TEM and the Audio Electrical Prospecting Method can reduce the TEM’s volumetric effect. comprehensive analyze the characters of the two detect method about aquiferous gob, the area of the aquiferous gob can be got accurately, which provide the basis for the work about water drainage in mine.

Aiming at the spontaneous combustion accident of 21021 second mining face in Hongda coal mine，analyzed the second mining face high spontaneous combustion induced factors and management difficulties. On this basic, a series of technologies were applied，which included injecting three-phase inhibition foamto to rapidly cool the fire area and cover filled fracture，at the same time adjusting ventilation facilities to realize partial pressure，reduce air leakage, and explored the loose goaf drilling technique of two stage casing. After treatment the oxygen concentration decreased significantly in the fire area, the rest of the indicators are to meet the requirements of fire opened.

In order to study and master the behavior and characteristics of mine pressure at mechanized coal face of large mining height during end-mining and ensure equipments rapid retracement in Chahasu coal mine, this research was made on the governance practices in 3101 working face, combined the theories and field measurement, in order to determine reasonable yield mining position and mining plan, the behavior of mine pressure during end-mining were analyzed by using end resistance weighting criterion and resistance increase rate weighting criterion. The study result shows that the periodic weighting distance is 18.6m and the sustain length is 4~6m in 3101 working face. It could control weighting position and decrease weighting length effectively by using yield mining technology. Reasonable position of yield mining could make sure a mild roof strata behavior when hanging nets, cut-through and equipments retracement. It could be more effective by combining end resistance weighting criterion and resistance increase rate weighting criterion to analyze the behavior of mine pressure. The researchers have devised a provide a references for safety production and rapid equipments retracement in mechanized coal face of large mining height during end-mining., In order to study and master the behavior and characteristics of mine pressure at mechanized coal face of large mining height during end-mining and ensure equipments rapid retracement in Chahasu coal mine, this research was made on the governance practices in 3101 working face, combined the theories and field measurement, in order to determine reasonable yield mining position and mining plan, the behavior of mine pressure during end-mining were analyzed by using end resistance weighting criterion and resistance increase rate weighting criterion. The study result shows that the periodic weighting distance is 18.6m and the sustain length is 4~6m in 3101 working face. It could control weighting position and decrease weighting length effectively by using yield mining technology. Reasonable position of yield mining could make sure a mild roof strata behavior when hanging nets, cut-through and equipments retracement. It could be more effective by combining end resistance weighting criterion and resistance increase rate weighting criterion to analyze the behavior of mine pressure. The researchers have devised a provide a references for safety production and rapid equipments retracement in mechanized coal face of large mining height during end-mining.

Through the investigation analysis and management of existing problems of underground personnel positioning system maintenance management, construct a set of effective management system of underground personnel positioning system. This paper focused on six parts，including system construction, unified template, technical training, "menu style" check, information system, independent management of coal mine。It introduced the methods of construction management system. Through the implementation of the system, the underground personnel positioning system daily operation management more scientific, standardized, effective, maintenance management system greatly improved, and has wide application value.

Hydraulic fracturing is an effective measure to improve the caving effect of top-coal in fully mechanized top coal caving face. Through the discussion of hydraulic fracturing mechanism, the crack tip stress intensity factor expressions and crack initiation pressure and shear failure pressure induced by hydraulic fracturing are deduced. Using numerical simulation method to complete the numerical experiments of specimen strength at different water seepage pressure and loading characteristics, the pore pressure evolution and fracture characteristics are obtained, strength deterioration index is proposed to evaluate the degree of hydraulic fracturing. The results show that: the required load for the specimen damage is reduced under the action of pore water pressure; while injection water pressure is less than 3MPa (before rupture time), the load curve has the linear increasing trend, the specimen is destroyed while reaching the peak intensity of specimen, the axial load shows a rapid drop phenomenon. When the pore pressure increases from 0.5MPa to 2MPa, the load to destroy specimen is decreased gradually, and the stress at monitoring line also has this trend. When Pore water pressure is larger, the top of specimen is damaged earlierly. Strength deterioration evaluation index for assessing hydraulic fracturing shows that, with the increase of pore water pressure, the ultimate load and intensity of specimen are decreased gradually, Y (deterioration index) has the trend of exponential increasing, providing the basis for selecting reasonable water pressure.

Based on the fact that the aquifer and goaf underwater coal seam for deep mining can be influenced easily by flood, it takes the geological conditions of the 29# first coal mining face under the ponding of Jixi Xinfa coal mine goaf as the background. According to the key strata theory, roof migration law, fracture development characteristics in the stope and other theories, the similar material stimulation experiment is adopted to study the development height of the roof fracture zone of the working face, the distribution of stress variation and its distribution law. The rational similar material ratio can be determined on the basis of the physical parameters of the coring rocks on the site which have been measured by experiments, thus further constructing the similar experiment model to stimulate backstopping, the results of which indicate the height of the crack belt is 21.8m, the height of the caving zone is 4.5m and the maximum stress peak of the main roof is 30KPa. In contrast to the testing data of face drilling, the measured height of the crack belt by drilling is 23.1m and the height of the caving zone is 4m. Therefore, the experimental data is -1.3m and 0.5m different from the measured data, and the maximum difference is smaller than 9%, which is in line with the requirements of error standard. Thus, the reliability of studying water-flowing fractured zone by similar stimulation can be verified, and the development of 29# coal water-flowing fractured zone in Jixi mine lot can be revealed.

The rock stability control around uphill mining under the large angle seam is an important factor in safety and high efficient coal mining . Taking the production practice under the large angle seam in Yangying Mine. The theory of internal and external stress field is quoted to analysis the mechanical problems in uphill mining under under the large angle seam. the support resistance has a relationship with the theory of internal and external stress field in uphill mining . Using the numerical simulation software of UDEC , it simulating the mine pressure law of mining stope under the nearly horizontal and the dipping seam. with the comparative analysis in numerical simulation, the conclusion that specialdistribution law of stress field distribution and plastic zone distribution around uphill mining under the large angle seam, the correctness of the theory of internal and external stress field. on the basis of the above theory , the stability of surrounding rock around uphill mining under the dipping seam is proposed.

The support effect of haulage roadway directly affect safe and normal advance of the working face. This pater make the first mining face in Yanjing No. 1 Coal Mine as the research basis, field monitoring the deformation of roadway and the roof abscission layer of the haulage roadway, and analysis the monitoring data. At the same time, according to the problems that found at the field, we make some changes in the original roof abscission layer instrument.

In this paper, firstly, the basic principles of gas content method was be used to predict coal and gas outburst and the calculation method of gas loss quantity , were introduced. Drilling coal core in the depth of 15m, 25m, 30m,35m,45m,60m in the 3012 work face of Yonghong, the values of gas loss quantity Q1, gas content of underground mine and laboratory Q2, gas content of Smash Q3 were measured using the gas content method , and the effect of different sampling depth in the same seam on the measured value of gas content was compared and analyzed. At the same time, the site inspection were carried out. On the basis of the comparison and analysis, it can be concluded that the measured gas concentration of the coal core in the depth of 30-35 m can be regarded as the the original coal seam gas content.

Pneumatic monorail crane is a kind of underground auxiliary transportation equipment research and broad application prospect has. The pneumaticcontrol system is a pneumatic monorail very important part, its mainpneumatic monorail hanging operation protection, monitoring and control the vehicle brake system, This paper use the FluidSIM-P software to pneumatic monorail gas design and Simulation of control system, mainly introduces the analysis of aerodynamic design content control unit and use the FluidSIM-P software simulation results.

Abstract: The appearance of new applications such as Internet advertising sets forth requirements for the position on accurate understanding of network entities, and IP Geolocation technology can meet this demand. This paper introduces the basic concepts of IP positioning technology and related applications, describes the existing IP Geolocation technology, and then proposes a IP Geolocation method based on network path measurements. The method estimates the geographic location of IP by measuring paths and delay from observation point to destination IP, converting the measurement packet size inferred path distance and combining the relationship of paths. This paper establishes a experimental environment, carries out experiments using the method and compares it with other methods. The results show that this method can geolocate IP more accurately.

Abstract：Based on the PSO algorithm to design the inversion program of prediction parameters of proba-bility integral method. By designing experiments, these four experiments ,including the study of reliability of the PSO algorithm, resisting the effect of gross errors, the losses of observation points and the reliance on initial value are researched.The results show that the use of PSO algorithm can accurately inverse the prediction parameters of probability integral method ,which has a strong anti-interface ablility to the influences of random errors in observed values and the losses of observation points. When the given initial values’ error is no more than 10%, the first inversion can get satisfactory results; When the initial error is no more than 50%,the inversion result of subsidence coefficient and the main affect of tangent is not affected by initial value. Further analysis show that putting inversion parameters into the second inverse can get a more accurate results. Meanwhile, moderately increasing the scales of the initial population can improve the reliability and accuracy of parameter inversion.

The porosity and surface characteristics are in essence the mechanical concern of slurryability of the coal have been put forword in this paper, which based on the existing analysis of the influence factors. This conclusion has been verified by experiments with MengDong coal as the research object, the experiment results show that the slurryability of the coal which has been put in 105℃ dry atmosphere for 3 hours will become bad. The main reason is that the specific pore volume and the specific surface area of the coal has been improved during the drying process; In contrast the contact angle has been greaten, that means only using the measurement data of the contact angle to conclude the slurryability of the coal is not rigorous.

The working traits of rigid pile composite foundation in batholith region is different from other region. Load-settlement curve of 19 CFG piles composite foundation is confirmed through the site load test and load transfer mechanism of the composite foundation with different piles length is discussed in this paper. The test results indicate that the settlement is small and long pile base resistance has certain hysteresis while short pile with significant end-bearing capacity. The settlement ideal model of CFG piles composite foundation in batholith region is proposed based on existing research results. The research can supply the design basis of CFG pile composite foundation in the batholith region which has bigger engineering practical value.

According to the problems required to repeatedly start and stop loading and manually leveling when using belts, forklifts, dustpan, scale and other equipment. In order to improve the level of automation of bulk materials such as coal in truck’s loading & transport industry. An active process based on suspension scraper was proposed. An active device of truck’s loading & leveling system was developed, integrated and applied with truck’s loading station in the coal mine. More than one mine site showed that: the device achieved a rapid quantitative loading & leveling after the truck into place, A 40 tons truck’s loading efficiency was improved nearly 60% and reduced to 2 min, the section of the compartment meet the transport requirements and Without artificial dressing.

Due to the decline of the coal demand, the profit of the coal industry decreased sharply and the firm’s finances keep worsening, the coal enterprises cannot easily obtain bank loans or issue corporate bonds. Meanwhile, the government has issued the policy to encourage the securitization of the firm’s assets. Under these circumstances, the coal enterprise can explore the innovative ways of assets securitization. The paper discussed the characteristics and the feasibility of accounts receivable securitization, and outlined the key points of securitization process.

Aimed at the unclear management process status of under-well project in coal mine, and according to the principle and method of Petri net and project life cycle, the processes of the whole life cycle of under-well project in coal mine were identified and modeled. Firstly, the whole life cycle process system of under-well project was established; Secondly, on the basis of the logical relationship between each process, using the Visual Object Net++ software to do process modeling for the whole life cycle process, design and planning phase, construction and control phase, evaluation and settlement phase. This study supplies the process model foundation for the development of under-well project information system based on workflow, and has a important role to realize the synergetic management and Informatization management of under-well project in coal mine.

studys the current situation of coal industry of the rule of law construction in China, analyzes the main problems of coal industry of the rule of law construction. Combined with the new situation of the current energy revolution and coal industry transformation and upgrading, put forward the principle of the rule of law construction of coal industry. Combined with problem facing by the coal industry development under the new normal, promote strategies for the rule of law construction in coal industry.