According to the geological and technical conditions of the trial fully mechanized mining working face , and on the base of field measurement, under the condition of slow and rapid mining rate,the article analyzes the distribution of laws and changes of coal pressure before working face. Field production should be in accordance with its laws and changes in distribution, and increase the mining rate properly and reduce the retention time of working face at the same position could be of great advantage to keep the roadway stable and to improve the maintenance of the roadway, and there has a certain significance to ensure the safety in production .

In order to avoid wasting of energy when the air compressor idling, Based on long-term research for air-compressors, the author of this paper put up a series of reformations about the pipeline, deflating equipments, control organizations for entering, electrical starting system, spring and etc, bring about a reform about discontinuous running of Air-compressors. It brings great economic benefits and remarkable social benefits.

Briefly describes the currently situation of coal resources and deep mining in Henan province, combining the characteristics of each mine, such as high ground pressure, high ground temperature, high gas, high water pressure and rock burst, and other issues encountered in deep mining are analyzed. According to deep mining in Henan province some major problems and countermeasures are proposed for deep mining in Henna province.

Author points out Liyuan Mine own questions in the post-merger，and introduces key measures about Liyuan Mine innovation of integration management model，from the strategic conformity，the innovation of vertical centralized multi-well head management model and so on. After four-year innovation and practice exploration about integration management model, the enterprise receives the remarkable effect.

Discuss the use of nonlinear dynamic analysis function of FLAC3D, to study the results of single hole blasting. The critical shock speed of rock failure was seen as criterion, so as to determine the scope of the damage of rock blasting. Through field experiment, the changes of compressive strength and tensile strength about rocks around the blast hole were researched. The results show that, Mechanical properties degradation area of surrounding rock after blasting and circle radius fracture received by numerical simulation analysis was basically tallies. With reference to blast hole layout of smooth blasting which commonly used in underground rock roadway, Blasting of kibble hole and auxiliary blasthole could not produce injury to the forming surrounding roadway. Blasting of surrounding holes would make injury for the rock within 15cm, and caused 9 percent decline in compressive strength and 20 percent decline in tensile strength. This study was very helpful to control of underground roadway surrounding rock and determinate the thickness of reserved safety rock .

We did the frost heave performance tests for a shaft hole soil samples, and the results shows that this kind of soil belongs to exceptionally strong frost heave soil. And then the water content in different layers denotes that the water migration is the main reason of exceptionally strong frost heave. And the effectiven suggestion to reduce the frost heave in order to ensure the freezing sinking safty.

In this paper，analysed the conditions and mechanism of complex and dynamic phenomenon in three levels of return wind down of Ping ding shan 12 mine.Revealed the complexity of the phenomenon under the conditions of the deep mining and put forward effective control measures, achieved good results, ensured safety in production.

Currently, Semi-continuous process has become an important technical development direction of the open pit stripping process. Mobile crusher machine is used successful in abroad, it’s to provide the condition to use semi-continuous mining system on strip rock in china open-pit mine. Domestic open-pit used self-shift crusher less, and it’s not meet the design requirements of production because a higher failure rate. In this paper, by semi-continuous system application and the analysis of fault, it’s given a random selection repairman model，and establish the database, and proposes to strengthen the system of semi-continuous state of maintenance, by increasing the self-shift crusher semi-continuous mining system reliability, the ability to improve yields, to meet the open-pit mine's production needs.

Analysis of the rules of rock strata and ground surface movement in coal-mining has the vital significance for coal mining industry companies to arrange safety coal pillars, guide relocations, and keep sustainable development. This paper is based on the materials from No.271 Observatory of Qianjiaying Coal Mine of Kailuan Group, to evaluate the parameters of surface movement on deep alluvium basis, for the guidance of coal Mining Under Buildings,Railways and Water Bodies in the future。

Based on the demand analysis of integrated software platform for coal mine comprehensive automatic and information system ，The paper has designed the application function , and on this basis，it has achieved the key design of integrated software platform。It can achieve the seamless integration among different production subsystem、monitoring subsystem、management subsystem and video subsystem，and manage and monitor conveniently、efficiently and safely for them。

Abstract: Introduces a new technology of fully mechanized mining face equipment installing in complicated geological structure, which used caving hydraulic supporter reinforce roof support and coal wall was extended with shearer secondly cutting after roadheader excavated 4.5 metres small section in mining face. Realize the fully mechanized equipments were installed in complicated geological structure .The practices showed that installing technology was realistic in mining face serious spalling and broken roof.

Through aim at the shortage of normal gas outburst measures, the use of coal and rock grouting solidification method for improving the strength of uncovering coal seam in cross-cut and enhancing the stability of the surrounding rock, and reducing the energy from the initial release of coal seam gas to prevent the outburst. By changing the physical structure of coal and rock mass properties, Especially in the process of uncovering coal seam in cross-cut, it is for the entire process provides a reliable security guarantee, which is a premise for fast through the coal seam.

The system of coal industry competitiveness evaluation is information incomplete and incertitude. By the research of coal industry competitive factors, coal industry competition evaluation system was put forward. Based on these viewpoints, a coal industry competition multi-level gray evaluation model was build. Evaluate the coal industry competition in some countries or regions by the model, and obtained the satisfactory result. Provide the theory basis to appraise the coal industry competitiveness.

In view of lack of quality assessment method in chinese building engineeering design the quality assessment system of building engineering design containning clear arrangement,phase and operability was created in this paper. Making the building engineering design system as the study object, the author break through the traditional thinking model and engineering approach, applying the system thought and method for assessment method. So the quality multi-layered assessment method with Fuzzy evaluation was formed. The building engineering design quality can be evaluated perfectly and reasonably through the quality and quantity analysis way.Then the ‘compensation-after-accident’ quality management model of building engineering design can chang into ‘prevention-before-it-happen’ type.

The accident in coal mine has a certain randomness and uncertainty. Designing a coal mine environment monitoring system, which is composed of substation and monitoring center：substations take charge in getting various environment parameters and send them to monitoring center through CAN-BUS; Monitoring center is take charge in receiving data from various substations and showing them visually after disposing, meanwhile, backup to database. It can send alarm signal when the detected gas concentration exceeds safe preset value, and adopt effective venting measures. we can establish a relational model between security information and time via inductive analysis for various environment parameters in database, and predict the trend of security information in a period of time, providing a reliable guarantee for the safe production of coal mine.

Gas-geological map is a kind of important map that is used for analyzing gas distribution and distributive features of gas outburst, researching into gas regulation, appraising utilization and development of gas and carrying out regional prediction of coal and gas outburst. There are some differences between different scales of gas maps which want to express sorts, contents and keystone of information, so we need to use some methods to show the gas-geological map in different scale, and found a navigation according to each other relationship of the gas-geological map , then link them up organically. In the paper, a kind of system for visualizing regional gas outburst prediction is developed by Visual C++ 2005 software, ArcGIS Engine of GIS component produced by ESRI Company, gas geology theory, GIS method and theory, visualization theory, etc. With the aid of the visualization system, the bidirectional link of the gas-geological map is achieved in different scale between mine and mining area, between mining area and working face, which provides a new convenient intuitionistic method for administration of gas-geological map and analyzing disciplinarian of gas geology.

The large-scale experiment unit of coal spontaneous combustion at low temperature is used to test the spontaneous combustion characteristic parameters of the 2# coal seam of ZaoQuan mine. Then the shortest period of coal spontaneous combustion, critical temperature, production rate of marked gases, heat releasing intensity of the samples are determined，in order to provide a reference for the prediction, prevention and extinguishment of coal spontaneous combustion for ZaoQuan mine.

The paper analyzes the roundness error actual operating mode of mine solid of revolution components，establishes the development environment and development tools of software.And the paper researches on the analysis system of mineral product solid of revolution components roundness error bases on virtual instrument design method and takes Labview. According to the characteristics of roundness error analysis, an improved genetic algorithm is proposed to evaluate the minimum zone roundness error. It utilizes real encoding. Based on fitness trends, it conducts directed mutation with adaptive mutation step size, and it can achieve the high precision.

Abstract: Face is caught in the main body of a book specifically for cutting coal supporting , bottom board large area produces water , leads to the unable backstoping problem, have carried out comparatively detailed analysis, the shop who has introduced that the roof drills since turning on the water , face sets up from time along slot tunnel blocking the water wall has been in charge of leading water , reforming the smooth slot down and so on harnessing water harming method , has governed and measure by putting pertinency into practice , has reached to remove water harming hidden trouble, effect having ensured safety at work.

The long-term exploitation of underground coal mining will cause the overlying rock movement and deformation, resulting in the formation of large areas of ground subsidence in areas with stagnant water, so that the natural ecology and landscape change, abandonment of farmland, villages relocated, bridges destroyed, roads folding movement, thereby changing the trajectory of economic development of the mining area. To achieve sustainable development in mining, underground mining activities to minimize the impact to the ground, it is necessary under the subsidence of the different degrees of technical feasibility, economic and reasonable under the premise of local conditions the implementation of the subsidence control projects to re-establish the ecological balance system. Based on the Huainan Mining Group subsidence control projects over the years accumulated results and experience of the mining subsidence area subsidence control projects carried out ways and methods.

This paper takes wet limestone-gypsum flue gas desulphurization (FGD) of a new 2×350MW coal-fired power plant for example, it expounds the FGD main electrical connection plan, it points out the matters needing attention in electric system design in the chimney-cooling tower integrated project without bypass gas duct. This plan improves the reliability of FGD electric system and the degree of automation with simple operation, so that decrease the equipment failure rate and reduce the impact of boiler operation.

Introduced a new adaptive pilot control circuit ,it is a pilot control component which composed by electronic devices. Cooperated with the control lines and distant diode ,this circuit achieves the pilot control and the protection of control line faults .The purpose is to use modern electronic technology to solve the problem of existing technology . The circuit has advantages such as high reliability of work, the protection of sensitive and the impact by the power fluctuations is small.

In this paper, the way to create the three-dimensional underground roadway is explained using Visual Basic6.0,together with SQL Server2000 database technology, ODBC database engine based on SolidWorks 2007. Moreover, the design of the roadway is optimized through both the distance analysis between new and old tunnels and impact analysis, making the underground tunnels a more intuitive and reasonable image.Meanwhile, relevant parameters of the roadway are noted to gain a better grasp of the up-date information about the tunnels,making the evel of safety management greatly improved.

This paper analyzes that have been developed and are developing underground personnel positioning systems widely used in positioning technology, and analyzes the advantages of several positioning technology, each with different advantages of location technology, the need for different communication requirements to select the appropriate location technology. With the Zigbee-based wireless transmission technology, network nodes can be mobile, network quick and simple, low cost, easy to maintain characteristics of the network, and the bus together to accomplish a more superior position.

As the improvement of mechanization level in coal mining, fully-mechanized coal mining unit with large-power was widely used. The use of mineral-oil based hydraulic fluids intensified the risk of fire. The fire risk from hydraulic fluids in coal mine equipment and the direct cause were introduced at home and abroad. The rating and management on the hydraulic fluids were discussed in detail. The next key work and suggestion about the management on the hydraulic fluids were proposed.

Abstract：We analyse the width of the roadway driving along next golf of narrow coal pillar in mechanized coal face using limit equilibrium theory and numerical simulation in mechanized coal face. Depending on the relationship between different the width of the narrow coal pillar and the amount of roadway surrounding rock deformation, we definite a reasonable width of narrow coal pillar and apply to engineering practice. Practical results show that the width of the narrow coal pillar is reasonable, technology and significant economic benefits are significant. Our conclusions have a guiding significance for determining the width of the roadway driving along next golf of narrow coal pillar in mechanized coal face in similar conditions.

This paper quantitative analysis the width of mined-out aera that lead to igrous rock breaking through the dynamic model . FLAC5.0 Numerical simulation software analysis the distribution of vertical stress inⅡ 102 mining area. Base on the numerical simulation results,we can know that: igneous rock has become the main bearing body afterⅡ1022 and Ⅱ1024 mining completely. After Ⅱ1026 mining completely the igrous rock has become instability. By analyzing the distribution characteristics of mining-induced earthquakes we can found that conclusion: 1) After Ⅱ 1024 mining, the distribution of mining-induced earthquakes rarely within and above ingeous rocks that means igneous rocks is stable. The rock below the igneous rocks move severely that indicates igneous rocks become key stratum。2）The movement of the layer above the igneous is controlled by the key stratum, so the mining-induced earthquakes distributed mainly in the lower layer of igneous rock. By analyzing the distribution characteristics of mining-induced earthquakes that could provide a theoretical basis for monitoring the stability of igneous rocks

Considered both the weight load of roof rock and all the overlying rock loads of coal seam, leading into oinjury factor, the value of damaged harder igneous stratum roof to step away from the first weighting was obtained, combined with YangZhuang coalmine of Huaibei Mining Area of hard igneous rock roof.

Abstract： The rich anthracite resources of Yunnan Northeast, most are difficult to select high-sulfur coal. From basics of sulfur-phase study of the coal ,in a targeted manner using advanced methods of washing experiments established a suitable and economically reasonable three combination of washing and selection process of heavy medium cyclone + TBS liquid-solid fluidized bed +Cyclone ~ static micro-bubble floating column in the area,to achieve pre-combustion physical desulfurization better results.

This paper analysed importance of taking ash and pyrite from coal in China; introduced working theory of Teeter Bed Separator and advantage of three phases separating technics; chose four kinds of representative high-pyrite having coal in northeast of YunNan province to do the study of taking ash and pyrite from thick coals by using Teeter Bed Separator; made conclusion that Teeter Bed Separator had predominance in taking ash and pyrite from thick coals ,so was fitted to various coals.

CMZY2-100/18 drill loader is a speedy drivage equipment for medium and small hard rock roadway of colliery in our country, it can be used at tunneling in other underpasses as well. The design takes in features of Drill jumbo and Cinder Scraper, and integrates the actual situation of China's coal mines fully. This designing consistents with the facts and make it possible that tunnel quickly in the rock roadway.