The Australian mining safety is reputed to be the best in the world, many management system is worth learning. The paper introduces Australian mining products management system from Laws and regulations, mine product certification system, supervision and management of mining products. Through the analysis of the Australian mining products management system, puts forward the improvement of China's mining products management system views and suggestions.

With the collation and analysis by questionnaire and survey data of the 85 coal enterprises the paper summarize the common problems of integration of industrialization and informatization，and give development suggestions from the government level， the association level and enterprise level.

In the face of the coal market fierce competition, the supply chain cost management has become an effective way to reduce the cost of coal enterprises. The article analyzes the research status of coal enterprise supply chain, analysis of the characteristics of the supply chain cost management in coal enterprises, build a coal enterprise supply chain cost management system from three dimensions, which is cost, operation, relationship, put forward corresponding methods which based on cost category on the supply chain cost control.

The key stratum movement has important significance to ground behavior of coal mining face, overlying strata movement, surface subsidence and fracture fields distribution. In order to confirm the position of key stratum, this paper adopts strata control observation, density test of rock, uniaxial compression, deformation test and other methods, and the mechanical properties of overlying rock strata and periodic weighting is confirmed on 601 great mining heihgt workface of Meihua Coal Mine, and the hard rock and key stratum are calculated through computer programming. The results show that the C6 formation is given priority to key layer and C8 formation is the key layer. C6 key layer interval is 17.88 m, contrast to observation results of mine pressure, main roof weighting interval is 18.25 m. Two kinds of results are consistent with each other.

According to exposed problems for high stress and soft rock roadway of pressure intense、soft broken surrounding rock and roadway support difficulties, analyzed pressure releasing slot play an active role in the areas of relieving underground pressure and control of surrounding rock deformation,the numerical simulation was applied to the comparison analysis of destruction of the surrounding rock mass and stress changes in the roadway excavation pressure releasing slot before and after,and optimize selected pressure releasing slot accurate emplaced position.The results showed that it could effectively control the amount of change of surrounding rock after the roadway excavated pressure releasing slot, roadway roof and floor and Lane sides closer to 20 ~ 30mm reduction;The degree of stress concentration decreases,peak stress transferred to the surrounding rock deep, pressure relief have a good effect,effectively safeguard the security and stability of the roadway.

According to the problem of the strong ground pressure behaviors will or will not appear when 7m mining height Working Face crossing gully terrain in Daliuta Mine, Key Strata Position discriminant method was adopted, the result show that in the gully terrain area the primary key stratum was not eroded, its integrated and far from 5-2 coal seam. It predict that strong ground pressure behaviors will not appear and for the verification of the actual mining. The In situ measurement result show that during the Working Face crossing the uphill of gully terrain the average periodic weighting length is 13.97m, average cycle end support resistant is 16723kN, dynamic load coefficient is 1.51, ground pressure behaviors appear normal.

　　　Abstract:The scraper using both the nose and tail driving generated the power imbalance phenomenon under the starter operating conditions,which seriously affected the reliability of machine operation.For this reason, in the influence of the the scraper motor power allocation factors, simplified physical models can be derived the relationship that the power difference was related rated speed of the two motors, then it provided a basis for selecting motor power allocation.Meanwhile analyzed the relationship between sequence starting and the power imbalance, obtained the data in the no-load starting and overloading conditions.The results showed that, choosing the starting time can be effectively improved the power imbalance under heavy starting. Those studies provided new ideas to resolve the problem of the imbalance of power scraper conveyor.

The ignition and growth process during methane -air mixture detonation in strong ignition system are the combination of a series of complex processes, including phase change, mixing, chemical reaction, the particles flashover and so on. In this paper, the horizontal multiphase combustion explosion pipelines and other systems are used to study the methane-air detonation under conditions of strong ignition. With the concentration of 2.5%, 4.13% and strong ignition, combustion and explosion waves are propagated in the methane-air mixture. With the concentration of 15.15% and strong ignition, combustion and explosion wave can also be propagated in the mixture. As to the limit concentration of methane, the optimal explosion concentration is between 9.13 and 10.92% which is very near to the optimal concentration of methane, about 10%, theoretically. And the theoretical and experimental explosion pressure results with different concentrations of methane may also prove it.

This article through the triaxial compression, shear, fracturing and hardness coefficient and determination of experiment, full understanding of shanxi coal mined here to DONGYI 9 # coal mechanics performance parameters; Through the triaxial compression experiment, get the measured cohesion of coal samples for C = 4.87 MPa, internal friction Angle for ; Through the shear experiment, get the measured cohesion of coal samples for , and internal friction Angle for ; The difference with the experiment results, because of coal samples bedding shear strength great influence, and for triaxial compression strength small effects. The maximum tensile strength of coal samples for 2.19 MPa, the minimum value is 0.74 MPa, the coefficient of variation was 0.293. Coal samples of the maximum pressure into the hardness of 613.06 MPa, the minimum value is 439.17 MPa, the coefficient of variation was 0.084. Plastic coefficient for a maximum of 3.00, the minimum value is 1.20, the variation coefficient is 0.26.Experimental results show that the coal strong level of medium strong ~ soft, rock Ⅴ ~ Ⅷ level. Through to the mechanical properties of coal quality experiment, for the mine coal mining machinery such as cut heart patient choice to provide the technical support and the scientific basis. Key words：mechanical properties, hardness coefficient, triaxial

Abstract：Brittle rock at fault due to drilling easily hit throw faults, Geophysical presence of interference and multiple solutions, and drilling and geophysical exploration in the rich water detection have certain limitations. Therefore, to play its complementary This paper explores the combination of drilling and geophysical approach to determine the fault location, rich water-based and other related attributes. Used in this project drilling (exploration, fault location and rich water), and shock wave ahead of exploration (exploration fault location) four methods to detect transient electromagnetic and DC law pole ahead of exploration (detection rich water), their results are consistent after cross-checked against the relevant properties of the fault, the judge, that this method can effectively utilize the advantages of geophysical prospecting and drilling for accurate control of faults.

To investigate the influencing of the particle size and ash content on coal slim pressure filtration, two new indicators characterizing filter effect were proposed, and dehydration character of coal slime made up of different proportions of clean coal and montmorillonite were studied in detail . The results show that the coarser of the particle size distribution and the lower the ash content，the better of the effect of pressure filtration; It also shows that the coal slime below 0.045 mm can hardly dewatered by pressure filtration. The correspondence relationship between the indicators and filter cake moisture was obtained, which may be of great significance for coal slime filter process optimizing.

摘要：针对郑州矿区构造煤煤质特点，详细阐述了郑州矿区构造贫瘦煤工业性洗选试验的过程，对试验结果进行了分析，初步总结及探索了该矿区原料煤洗选加工的途径和方法。

Abstract：The 3-product H.M.cyclone has become the preferred equipment and technology in the transformation of old coal preparation plant and the new coal preparation plant，but the suspension’s distribution characteristic after 3-product H.M.cyclone separation is no scientific basis for reference. This experiment through respectively change suspension density and magnetic content to conduct heavy medium cyclone suspension’s distribution characteristic experiment，obtains the distribution law of three products heavy medium cyclone suspension，to provide an experimental basis for the some numerical calculation process selection and production practice of coal preparation plant.

Based on the analysis of the geological background, coal seam and coal, the chemical and mineral compositions of high alumina coal in Jungar was analyzed by chemical analysis and X-ray diffraction (XRD), and the varation of the content of alumina in the coal was studied in this paper. It was found that only No.6 and No.9 coal seam could be recoverable in the whole region, the average thickness of No.6 coal seam was 12m, and the northern of the seam was thicker than the southern; the average thickness of No.9 was 2.94m, and gradually thinning from north to south; the alumina component in the coal was come from the mineral: kaolinite and boehmite. In the No.6 coal seam, the coal in Heidaigou exploration area contains the highest concentration of Al2O3 , while in the No.9 coal seam, the coal in Kongduigou exploration area was the highest. It was also found that the content of gallium element of the coal in majority mine, was exceeded to the minimum industrial grade; and the formation of high alumina coal was affected on the coal geological conditions.

With the increase of mining depth and the expansion of mining area, traditional supporting way of shallow mining can not adapt to the deep mining problems appeared in this process. Deep coal and rock have remarkable nonlinear mechanical properties such as big pressure, big deformation and difficult support, the roadway support has become an increasingly important issue. Therefore, it is urgent to seek reasonable supporting methods. This paper analysis the lithologic features of -650 level west alleys in Kailuan mining area. The length of service of west alleys decided that we must take effective measures, so as to achieve the purpose of permanent safe use. So we decide to use bolt and grouting reinforced technology to improve the self supporting capacity and bearing capacity of surrounding rock loose circle, and resist the surrounding rock pressure effectively. The research results show that bolt-grouting support has remarkable effect, and obtain good technique and economic benefit.

Abstract: large cross section vertical coal bunker in the construction process, the construction technology and field management of labor organization and more complicated, thus the construction efficiency and the safety coefficient is low. In order to solve the technical problem of construction, the military city in large cross section coal bunker in coal mine construction process, according to the mine construction technology conditions, with reference to the relevant literature, highlights from the bunker construction efficiency, safety and proceed with of bunker, excavation, support process and the labor organization and management are discussed. Research results show that: the coal bunker construction process and site optimization of labor organization adjustment, the construction efficiency is improved by more than 30%; by strengthening the construction site safety management, for the construction of the main safe hidden trouble to take effective measures, ensure construction safety.

To relieve the tension of mining and tunneling replacing of DongPang Coal Mine and to eradicate the problem of slow advancing footage and low level of roadway quality-standardization, this paper, through improving drilling process of hydrogeology, optimizing the design parameters of roadway support, utilizing new devices and new technology, optimizing the labor organization, intersecting reasonably and parallel operation, wall chat operation, reversing schedule and so on, increases the large cross-section’s coal roadway’s advancing footage and creates the new level of 1050m of the monthly advancing footage of the large cross-section’s gob-side entry of DongPang Coal Mine.

In order to solve the problem of fully mechanized coal mining face with big dip, broken roof, soft floor, water spraying in various situations, and alleviate the tension of mining-excavation relay. The fully mechanized mining equipment machinery installation technology of hydraulic support, d ensure smooth transport of hydraulic support, use of multi-functional manipulator makes hydraulic support for easy, accelerate the speed of installation, improve installation quality, reducing the operation personnel, reduce the labor intensity. The results showed that: mechanical installation technology allows for fully mechanized coal mining face rapid installation, improve labor efficiency, Seven hydraulic supports are installed by each class, which can improve labor efficiency.

In order to study the impact of slip-form construction technology on coal storage structure stress. This article is based on 18m inner diameter coal storage bunker, under the storage loads, simulated the original design structure and different slip-form construction technology of building storage bunker. With a layer of "soft concrete" simulation the construction joint in different Slip-form construction Technology. Through the analysis will get the difference of stress and strain, between the different slip-form construction technology of built storage bunker and original design structure, provide a reference for structural design.

To determine the thickness of the safe aquiclude at the top roof of the temporary coal bunke and the possibility of drainage of its top aquifer in a mine in Erdos, core drilling in the spot, testing the physical and mechanical properties of the rock and the water releasing test are used. The result is that the thickness of the top roof of the temporary coal bunke and its roadway and the thickness of the broken-rock circle calculated is 11.62m. The possibility of drainage of its top aquifer is no good. At last, cutting down the height of the temporary coal bunke to the thickness of the safe aquiclude is used to ensure the safe construction of the temporary coal bunke and its roadways.

Concept of construction management first proposed by "POLC".Based on the " POLC " management functions, combined with pragmatism、Humanism、maximize the benefits of management principles through suit it 's measures to local conditions to engineer practice,which with The purpose, innovative, level of management concept. The task of auxiliary shaft hoist installation completed Safety and high efficiency.

In order to avoid face moves、 ensure the continuous mining of the working face and save the high cost of tunneling, adjustment inclination mining method is used by the 66310 inclined thin coal seam and protective layer fully- mechanized face of Xinzhuangzi Coalmine . According to the specific geological and technical conditions of production, the technical parameters of adjustment inclination mining and the design plan of transportation system change is determined, a series of management measures is taken in site,such as strengthening the roof management of large section roadway nearby inflection point in the transportation roadway、the slippage control of conveyor in the working face、adjustment the face support and so on.Through the rational design and well-organized in site ,good technical and economic results is achieved about this adjustment inclination mining .

The backfilling mining method implemented in coal mines is an environmentally friendly mining method. By introducing the characteristics and the application situation of filling mining method commonly used in coal mines in our country at present, related equipment and technology, this paper serves to elaborate the status quo of coal mine backfilling mining and to analyze its broad prospects of application in our country. As one of the important technologies that achieve the aim of green exploitation, backfilling mining method has not only brought us enormous innovation in practical engineering but also obtained “Three” Exploitation Models(tunneling, mining and processing simultaneously). The backfilling mining method has been increasingly widely applied and developed in coal mines for its distinctive advantages of environmentally-friendliness and comprehensive utilization of materials.

Coordinated open-pit with underground mining order is related to the degree of its restrict and influence between two different mining system. Under the background of coordinated open-pit with underground mining engineering practice in PingShuo mining area. The characteristics of slope deformation destruction of open-pit coal mine in different coordinated open-pit with underground mining order was analysed by numerical simulation. According to the results of the analysis, the mining model of open-pit mining lagging behind underground mining was suggested in coordinated open-pit with underground mining practice based on the point of keep slope level and stability, and open-pit mining progress should lagging behind underground mining active period.

Huo Luo wan’2-2 coal mine was unstable coal seam, now 1 panel used 5.0 m large mining height Fully- mechanized coal mining equipment，can it be apply to the coal seam thicken in 2 Panel becomes a problem urgently to be solved。this paper, by the theoretical calculated and analyzed of main equipment，such as coal mining machine、hydraulic support，and with practical mine experience，It demonstrates the applicability of large mining height Fully- mechanized coal mining equipment to unstable coal seam; this research conclusions has the universal significance and promotion value to similar conditions seam exploitation。

Abstract Based on Tao Mine 35kV substation, its basic electrical substation and the function of the digital transformation of the station was described. By comparing CBZ-8000B, intelligent substation automation system and DHW6000 digital substation system, DHW6000 which is more suitable for Tao-II 35kV substation is selected. The implementation of the functions of each of the Tao mine digital substation is described and a specific device configuration of DHW6000 digital substation system used in the Tao mine digital design is given, with a description of the characteristics of the device model. Finally, the list of specific configuration of the Tao mine digital substation system is given.

For the problem of override trip of coal mine power system, the paper proposed a scheme of preventing override trip based on short circuit locking control. The system is mainly composed of short-circuit locking controller, comprehensive protection device and signal line. Locking controller receives short-circuit current signal of the switch and blocks superior switch quick-break protection function. All levels of switch short-circuit blocking prevent override trip function in turn cascade,.Signal using point-to-point transmission.When the line appears short-circuit fault, device can realize no time limit quick-break protection function of selective and prevent the occurrence of override trip. Keywords：coal mine；override trip；quick break protection; selective

Production based Shenhua Wuhai Energy limited liability company production mine mostly high-gas coal mine gas concentration is low, is a low-density gas. The gas concentration less than 30% can not be direct use. but the high cost of purification and more directly into the atmosphere, causing the greenhouse effect. Low-density gas in power generation technology, and full use of clean energy and reduce greenhouse gas emissions. The results show that: the coal mine low-density gas in power generation technology to improve enterprise efficiency at the same time, to achieve the purpose of energy saving.

In order to eliminate the phenomenon of jet orifice on the underground of high-gas coal mine or outburst coal seam about drilling holes, ensure the safety of drilling construction, and reduce the concentration of dust in drilling construction, this paper provides a new type and multifunctional blowout prevented and dust controlled device in mine. Its working principle is simple and sealing is better. It can be manipulated and applied quickly and easily in the underground. The application of this device on drilling construction on blowout prevented and Dust Controlled in the 2709 return airway of Cheji coal mine, showed that: the phenomenon of jet orifice does not appear after using this device during construction process with the completed 127 drill holes, and the highest concentration of the gas sensor of the display does not exceed 0.4%, the average concentration ranges from 0.1 to 0.3 % during construction process with the single drill hole, and carbon monoxide sensor data are displayed from 10 to 20ppm; the highest dust concentration does not exceed 85mg / m3 with 20 of those holes in which the construction process of the data collected , the average hole into the hole concentration of dust generated in the 35 to 60mg / m3 .

According to a new type of the output intrinsically safety Quasi-Z-source(QZS) Buck converter , a 3-order current peak control of small signal model was deduced, because when the QZS network parameters L1, C1 is much smaller than conventional Buck converter LC filter network parameters, it can institute order reduction to the model ,then, the QZS Buck converter can obtain the same transfer function model of conventional Buck converter , so the conventional Buck converter compensator design method can be used directly to design the controller of the QZS Buck Converter. Finally, the paper used the commonly output protection circuit to verify the correctness of the theoretical analysis.

Using computational fluid dynamics techniques of double vertebral body without pressure feed three-product dense medium cyclone flow field are analyzed, and through the actual production application test. The results show that the field application effect is completely achieved the desired results.

A method of non-grounded neutral point is widely used in the power system of coal mine, Insulating parameter is decided to mine the important parameters of the power supply security conditions. The state grid insulation measurement, be helpful for the timely discovery security hidden danger, and it’s important to improve the security of performance and reliability of power system’ s supply. based on the existing insulating parameter based on the method of measuring, The paper puts forward the method of measuring insulation into improve signal parameters, this method has good safety, simple operation, high precision measurement features

Aiming at the characteristics of the large scale coal enterprises, Analysing the business process of coal quality analysis whole process.The paper proposes four-layer architecture realizes informationization of coal quality analysis whole process based on B/S. From the stage of typing in coal seam sample base data, graphical displaying of the work face coal quality data to generating the monthly coal quality analysis document of run-mine coal and commercial coal. Every stages analysis the coal quality. Multiple linear regression and RBF neural network method of combining effectively improve the accuracy of the forecasts of traditional coal.To improve coal quality information technology an effective solution.