Given wider and wider application of ultra filtration (UF) and reverse osmosis (RO) technology in industrial waste water treatment, it designed a control system with UF and RO based on S7-300 series PLC, and provided real time monitoring for the running status by using Ifix5.0 configuration software as the upper computer. It adopted distributed control structure, and communicated between lower machine and upper computer with using TCP/IP protocol, and collected real-time values through the sensors. This system realized a precise control and real-time monitoring for field devices. The field application shows that this system improves the treatment efficiency of industrial waste water, and has a certain promoting significance to automated production and modern management of enterprises.

This paper aims at the energy saving strategy for belt conveyors. The energy consumption mathematic model and electric cost model are built respectively. The key influence factors of the energy consumption and electric cost can be obtained. A genetic global optimization algorithm is adopted to find the optimal coal flow and the operating speed by time-of-use tariff constraint. An economy benefit comparison of optimal energy saving transportation strategy and its normal operation strategy is taken. The results of comparison shows that under the current circumstance of technology and equipment. A 45 percentage energy saving and 42 percentage electric cost saving can be implemented by the optimal energy saving transportation strategy. The cost of the coal transportation can be reduced and the economy benefit of coal mines can be enhanced by this method. In addition, the delicacy management of mining and transportation of the coal mine can be achieved.

Aiming at the problems of poor reliability, difficult common fault location for the existing monitoring system of belt conveyor in coal mine, a monitoring system of belt conveyor with fault location function based on RS485 and CAN bus was designed. According to the site operation situation, the monitoring quantities and the control quantities of the system were determined, the overall design scheme of the system was completed, the emergency stop module, the amplify telephone，the lower computer and the terminal module was designed, the fault comprehensive judgment procedure was compiled, and a common fault location method based on RS485 and CAN bus was presented. The test results show that the system has the characteristics of complete monitoring, accurate location and reliable communication, which can meet the needs of coal mine production.

Abstract:At present，a general planning of a coal industrial mining area should be prepared for a coal resources development as stipulated by the Government，The general planning of mining area is an important part of each mine project construction，Using logical framework approach to carry out general planning of mining area，the existing problems can be comprehensively analyzed，a reasonable development goal mining area capacity and mine designed production capacity also be determined，and the pertinence on general planning of mining area be improved。 This paper took the general planning of yakeshi-wujiu coalfield mining area as an example，through the stakeholders analysis，problem analysis，objective analysis and strategy analysis，the methods and procedures of applying the logical framework of general planning of mining area were described。

Abstract: Shaft coal bunker is a key link in coal mine transportation, its repair and control is difficult. Collapse reason of the coal bunker breakage and surrounding rock collapse in Ganhe coal mine is analyzed in detail, and determines the reasonable and feasible repair design scheme. In the structure design composite support scheme, including anchor, net and reinforce concrete lining. Filling collapsed space with concrete, and do special treatment on the aluminum mudstone strata. Refine the connection form of the key points of the two caol bunker wall and surrounding rock, and the construction steps and effect evaluation was given. The results show that the design can guarantee the construction personnel, equipment safety, improve the caol bunker wall stress state, after the restoration of the shaft coal bunker more stable and durable, to ensure the safe production of the mine.

Put AHP as foundation, the paper constructs an evaluation index system of location selection for coal mine refuge chamber, which takes 7 evaluation factors as secondary index, such as, the surrounding geology, and takes 20 sub-evaluation factors as third class index, such as, the wall rock stability. On the basis of the introduction of AHP rationale and evaluation procedure, the thesis carries out a case study on the Zhao Lou coal mine refuge chamber and draws a conclusion that its location selection of refuge chamber is relatively reasonable.

In order to find more efficient power generation of ultra-low methane gas concentrations of coal mine, the efficiency of different concentrations of coal mine ventilation air methane in different power generation ways of steam generation, gas turbine power generation were calculated，the results show that the efficiency of multi-stage compression with intermediate cooling of the gas turbine power generation with the regenerator is highest, when the methane concentration exceeds 1%, the highest efficiency even more than 50%. Using a gas turbine power generation system, also have good features of simple structure and does not consume water.

Coal industry in China is extensive development model, the disadvantages such as high risk, high energy consumption and low environmental protection have a certain impact on the human environment and ecological environment, therefore, under the new situation, how to develop the coal industry in a healthy and orderly way are the facing major problems of Coal enterprises. In this paper, Xinhu which is the first km deep coal mine in Huaibei mining area as the object, based on the existing data, analysis the threats to the health and life of workers in coal mine construction and mining, and the destruction of the "three wastes" emissions, utilization of associated resources, high energy consumption, strata movement to the ecological environment. Therefore, we control the design source, puts forward the green and safety mining system, and the key technologies, such as technology of the exhaust heat utilization from return air, technology of coal and gas simultaneous extraction, technology of mine environment restoration and control, technology of energy saving and emission reduction, and comprehensive control technology of surrounding rock, strive to build Xinhu coal mine for energy saving, environmental protection, safety and efficient modern mine.

Application of C40~C80 high strength concrete with low freezing section in zhaogu second mine shaft as the background. The alluvium thickness is 530.5m, the freezing depth 615m, using double layer reinforced concrete plastic sandwich wall structure. The use of cement, sand, gravel, fly ash, slag and chemical admixtures according to different ratio, low heat of hydration with different strength and early strength crack compacting high performance concrete,the actual strength of more than 5% of the design intensity, which improves the strength reserve of the shaft wall, effectively prevents the destruction of the wall. Hydration heat reduces 15~17 degree C, better control the inner and outer wall mass concrete temperature crack expansion, to ensure the construction safety of the frozen section.

605 working face of a mine roadway with 10m narrow coal pillar along gob, while maintaining the original support form unchanged on the basis of the phenomenon of roof collapse, collapse pressure help, support damage prone to strong mine roadway excavation process, the roadway leading not safe. In 605 driftway as the research object, analyzes the mechanism of deformation and failure of the site investigation, theoretical analysis, numerical simulation and underground test means that the basic roof fracture in 6.5m coal pillar, and the key block B of basic roof in rotary roadway roof sinking motion is presented asymmetric deformation and horizontal shear and the coal pillar lost root cause failure. Combined with the geological condition proposed asymmetric multi - channel steel reinforced composite beam cable supporting scheme, field practice shows that the asymmetric support technology of surrounding rock of driftway maintain relatively stable state.

There are many problems in gas drainage of soft bedding seam, such as shallow sealing depth, tight sealing hole and so on, leading to poor pumping effect. In view of the above problems, through analyzing the drilling stability and stress field of surrounding soft coal seam, the reasonable sealing depth of grouting hole sealing in soft coal seam is determined. By increasing borehole pressure to the hole wall, sealing filling fissure effectively, the paper puts forward the application of grouting technology in the soft coal seam. By applying in Baoan coal mine, during the 60 days inspection period, the average gas concentration of test hole was increased more than 30%, then the extraction effect and the seam sealing in soft coal seam is greatly improved.

Aim at many problems about unmanageable floor heave of deep dynamic pressure soft rock roadways . the geological data of return air roadway in 2 mining area at Jiang Jiahe coal Mine is taken as an example to study the heave mechanism and its Control . Methods field investigation was used to analyze the rock deformation characteristics and internal failure of surrounding rock.and then，mechanism of heave floor have been revealed based on results of field investigation. The comprehensive support method with“bolt + metal net + gunite covering + anchor + grouting + floor anchor”ispresented.Application shows that the heave floor is effectively controlled by the method application, the floor heave amount is less than the maximum value of 10mm and the rate of convergence was less than 1mm/d in the later period. These research results can provide some necessary technical support for some reference for similar roadway.

This paper is based on the air-shaft outer lining engineering in WanFu mine. During the construction of outer lining with artificial freezing method, the line from -130m to -300m appeared crack. Through the data of informationalized construction and observation result, we suggest the non-uniform stress distribution and excessive frost heaving force is the main reason that caused the crack, so the combined supporting well curb and backboard, lowering the height of each segment, setting pressure relief groove and increasing the thickness of foam board were applied in the subsequent excavation. This method achieved good effect in subsequent construction, and application significance to other similar deeper surface soil layer engineering with artificial freezing method.

According to the near distance coal seams of southern five mining area in Malan mine, taking the means with the stress test results. the distribution characteristics of mining stress of the near distance coal seams with different mining conditions were studied using FLAC3D numerical simulation method. Simultaneously, based on the simulation results, the reasonable layout of gateway in the lower coal seam was selectively analyzed after the upper layer coal seam mined, the reference research results can be a valuable reference to surrounding control for the mining of near distance coal seams. Keyword: near distance coal seams; mining stress; distribution characteristics; layout of gateway

The background of this paper is the support of 50104 working face return airway in Caohegou coal mine. The roadway has experienced 50102 working face mining influence, and experience 50104 working face mining influence as well. The deformation of the roadway in the advance abutment pressure influence area is seriously, which has affected the movement of the coal face tail bracket, the ventilation and pedestrians. In order to reduce the mining influence and reduce the deformation of surrounding rock of roadway, Roof Cutting technology through the bidirectional energy-cavity blasting is implemented in the 50104 working face return airway. Engineering practice results show that the implementation of the two-way clustering can spin forming blasting couldt reduce 58.12% of the convergence of wall rock and 35.80% of the convergence of the roof and floor ahead of working face 10 m.

For efficient mining of coal resources, improve the production efficiency, Pingdingshan Mining Industry No.6 Mine 戊9-10-22170 fully mechanized working face layout in irregular shape , in the process of mining adopted a one-time retreat two stents shrinkage mining method, the results show that this method not only can effectively control the roof, and sped up the broken roof area working face impelling speed, achieved good economic benefits.

Under the condition of deformed coal seam, low permeability and coal seam group in Luling coal field, reservoir characteristics and technical difficulties in the process of coalbed methane development is deeply analyzed. The targeted solutions are put forward upon the tests and research to coal seams. On the basis of summarizing of development activities, a set of CBM development technology is formed to produce CBM in Luling coal field. It can be used in the similar coal field as well.

Due to the fact that it is difficult for hard-to-float fine coal to obtain qualified products in the flotation process, such as high clean coal ash content, low tail coal content. The particle size, the density composition and the coal flotation test progressive release were experimented in lab, analyzed the influence of flotation process and the floatability. Flotation process and flotation condition were researched by flotation tests, the result showed that the first flotation is hard to satisfy the demand of user, due to the high ash and low yield of the clean coal, low ash of the tail coal, so the secondary flotation process must be taken to get the qualified products. According to the secondary flotation. Under the conditions of similar feed and 10% of the clean coal ash, the result of secondary flotation process which included the yield of clean coal , the ash of tail and the faultless Index of flotation exceed the first flotation process，3.37%, 2.50% and 3.38%, respectively. The industrial application results, under the same concentrate ash and the same feed, showed that the result of secondary flotation process which include the yield of clean coal , the ash of tail and the faultless Index of flotation exceed the first flotation process，5.78%, 3.20% and 4.93%, respectively.

Large difference of gas emission characteristics between fully mechanized mining and slice mining exists in high gas and thick seam, according to the problem of gas emission during fully mechanized mining, by taking Yangquan 5th mine as research object, based on ventilation and gas data collected in field, gas emission characteristics of fully mechanized mining face was analyzed, and its reason was studied using gas deposit law and fracture evolution law of overlying strata, therefore, gas emission law of fully mechanized mining face was made clear, based on this, gas prevention technology of fully mechanized mining face was summarized and analyzed, tail roadway was set building “U+I” ventilation mode to control gas in upper corner, and strike high-bleeding roadway in up near seam was set for pressure-released gas emission, quantity of drainage reaching 100 m3/min and drainage rate reaching 90%, this provides technical support for gas control of high-gas mining-coal bed and adjacent layer in fully mechanized mining face.

On the background of 32205 island coalface in Huainan mining area, stress distribution characteristics of island coalface was analyzed by numerical simulation software FLAC3D. Analysis results indicate that the stress of the coalface is concentrated on both sides of the goaf after the formation of the island coalface. Before the roadway excavation, compared the distribution of surrounding rock stress under different coal pillar width, to determine the reasonable width of coal pillar is 7 m. During the stoping, the peak bearing pressure of the coalface increases first and then decreases with the advancing distance. According to the concrete conditions of the coalface to strengthen the support, the field measurement results show that the deformation of the 32205 coalface is small, which can meet the requirements of safety production.

Long hole directional drilling technology and equipment can effectively solve the problem of gas drainage by drilling in our country,a lot of experimental studies and field applications for this technology and equipment have been carried out in China.This paper introduces the principle of downhole motor slippage long hole directional drilling technology and the achievements and breakthroughs of long hole directional drilling technology in our country,contrasts and analyses the several typical long hole directional drilling equipment in domestic and foreign, summarizes the four concrete application forms and the corresponding cases of gas drainage in underground by utilizing the long hole directional drilling technology and equipment,concludes the problems in research and application of this technology and equipment.The results show that:it is a frequently used and effective method to use long hole directional drilling in gas drainage.However,there are still many problems such as difficulties for drilling in soft coal seams, numerous and complicated drilling qualifications, complex and expensive equipment and some of the equipment are subjected by international monopoly etc in this area.China should increase investments, break the monopoly, and strive to achieve independent innovation.

Mining Subsidence environment evaluation process often need statistical the movement and deformation value of villages, roads, bridges and other buildings, in order to solve the problem that the traditional statistical method efficiency is low, the precision is not high, in this paper, the mining subsidence prediction program is compiled, and the extreme direction formula of surface displacement and deformation in mining area is derived.And according to the different types of construction(structure) constructed from plane geometry shape, divided it into planar, linear and punctual, planar point clouds instead of the building used to subsidence prediction and statistics,The automatic extraction of the extreme value of moving deformation of ground surface construction (structure) in mining area is realized.The method in Nantun coal mine for the specific project application and achieved good results, the research results have important reference value for the evaluation of surface construction (structure) damage in mining area.

In view of the poor utilization of high exhaust air in the cooling system of independent mines, this paper proposes the integrated system including shallow ground heat storage, water source heat pump and mine cooling, which is mainly composed of shallow underground heat exchanger, mine cooling system, multi-functional and variable condition of water source heat pump units.The paper introduces the heat removal utilization of mine cooling system in non-heating season, the working process of buried pipe heat storage and the cooling tower auxiliary cooling, the working process of heating from ground source heat pump system operation. Based on the analysis, it is concluded that heat storage through cooling under the theoretical refrigeration cycle in non-heating season would save the energy of 26.5% compared with non-heat storage, which demonstrates the favorable economic advantages.

For Chengzhuang coal preparation plant, to slove the problem of the single-link control system of Medicament accession and the inexact amount of Medicament accession during slime water treatment process，a Collaborative Control System was designed based on fuzzy expert system in the Medicament process of thickener and filter press。The input of system is the overflow concentration of thickener and the dewatering model of filter press，and a fuzzy Controller was designed to compensate the additive amount of the two subsystems，which was to ensure the further improvement of aggregative indicator of economy, Processing speed and processing effect.

A new dual-motor driving system configuration was proposed to increase energy usage for pure electric explosion-proof rubber tire vehicle in mine, and the saving energy mechanism of dual-motor driving system was analyzed, and the principle of the configuration parameter matching and the curve of motor equivalent external characteristic were formulated. At the same time, the optimal driving mode of dual motor drive system was calculated by the principle of minimum electric power consumption, and the threshold value of each mode was identified. The simulation model for single motor driving system and dual-motor driving system were builded by using MATLAB/Simulink, energy consumption and driving range at cruise conditions were simulation calculated in auxiliary transport roadway of Wang jia Ling underground , the simulation calculation results show that dual-motor driving system can achieve a better economic performance.

The manual power switch is often equipped with electrical system of the explosion-proof vehicle in underground mine. The driver needs to operate the power switch when the vehicle is started or turned off. An explosion-proof vehicle power switch controlling automatically is designed for controlling power switch of the vehicle in underground mine, in order to solve a battery defect caused by the collapse of supply in the case of forgetting to turn off the electrical power when the shutdown. The device can reduce the driver operation from the start and stop of the vehicle, but also is of positive significance on the good operation of the vehicle and extending the life of vehicle battery. The design has been applied in a variety of models on the chock carrier, and provides a reference for the design of the control design for the power switch on the new or the modified chock carrier.

In view of the problem of large and sustained investment for coal mine mechanical and electrical equipment management did not effectively reduce the loss of electromechanical accident, an optimization model is established which use the minimum loss of electromechanical accident as the goal, and the resource input as the constraint, and on the basis of this, the inverse optimization model is established.At last,the model was used for a certain coal mine enterprise’s electrical and mechanical equipment management,and the result showed that the inverse optimization method can meet the new requirements of the system by adjusting the resource input constraints, which offered a new way to optimize the resource allocation of coal mine mechanical and electrical equipment management.