According to needs of the stripping technology in fifth period extension and the stripping characteristic of marl, Proposing four kinds of matching mode between new and the existing semi-continuous system, are independent distribution, unite arrangement but independent feeding, independent distribution and feeding, and canceling continuous technology system. Comparing these ways, eliciting unite arrangement is superior plan in initial stages of semi-continuous,truck-crushing station system and bucket wheel are arrangement in parallel,are respective feeding. The continuous system is canceled later, it will predigest the stripping technology of marl.

Abstract：The paper expounds the benefits of the system that neutral point grounded through the arc-suppression coil. The paper focuses on analysing the single-phase ground fault of the system that neutral point grounded through the arc-suppression coil with series resistance and carries out the fault simulation using Simulink toolbox of MATLAB, verify the correctness of the analysis. Finally, the paper chooses the selected-line theory for the system that neutral point grounded through the arc-suppression coil with series resistance, and adopts identification of time sequencing theory.

The application of collaboration software technology in the debar of coal mine hidden risks is researched, in order to achieve the rapid flow of transaction processing, real-time feedback, dynamic tracking and closure management. The model of cooperative software applications in the system of debaring coal mine hidden risks is given. Carry out design of role cooperation, process cooperation, information cooperation and computing cooperation in allusion to the system of debaring coal mine hidden risks. Field application shows that the application of cooperative software technology make the debaring of coal mines hidden risks greatly improved the efficiency of debaring, promoted the safe production of coal mine.

The paleo-sinkholes which develop extensively in North China coalfields may cause serious geological hazards such as surface subsidence, interfering production and endangering human lives. Based on difference in physical property between paleo-sinkholes and its ambient rocks,α-card survey was integrated with micro-gravitational survey to determine location of the paleo-sinkholes with geological data. The results show that evident geological effect can be obtained by α-card survey and micro-gravitational survey to define location of paleo-sinkholes.

The similar material simulation is used to study the law of surface movement and supporting due to deep mining.Taking a mine of Xinjie Mine area of inner Mongolia autonomous region as geologic background,one modle is made.It is used for simulating the condition of surface displacement,strata-pressure behavior and support fundamental parameters in workface.The results of research provide a scientific basic for strata pressure behavior law of depth mining and they are of very important reference value for further research on stope roof control in deep mines.

The application of cast-in-site sloping roof is becoming common in construction market,so overcoming the concrete engineering common fault is imperative. Practice proves that the engineering quality of cast-in-site sloping roof using traditional technologyis not guarantee. This paper introduces the marry template and concrete pouring technology of cast-in-site sloping roof by engineering example, and the construction technical problem of cast-in-site sloping roof is successfully solved, so the construction technology provide technical guidance for later group buildings, and gradually form construction method.

In this paper, the former geological data were comprehensively collected and field survey was immediately done in the assesmental region. Zhaoguan mining is new and medium, and its area is graded as level Ⅱ by analyzing various geological environment problems and its hazard extent during Zhaoguan mining and after mining. It provided the evidence for geological environment protection and geological disaster prevention. It makes the development and utilization of resources and environmental protection integrated in order to harmonious development among population, resources, environment and economy. Key Words: Mine；Environmental impact assessment；Geological environment

Feasibility of mining large section working face was studied to steep and thick B4+6 seam by means of numerical simulation tool at Liu Dao-wan coal mine in Urumqi mining area. The result shows that block which lay in gob area above working face could downward fill gob with trough shape and effectively support roof strata, avoiding dangerous of large-scale rock collapse because of increasing of mining range from strata control aspect. The experiment proves that large section mining is feasible to steep and thick B4+6 seam at Liu Dao-wan coal mine.

Temperature protecting of the conveyor system is an important aspect of transport, many temperature monitoring of domestic transportation system using infrared temperature sensor, its Real-time、stability and sensitivity need improved, and only monitor the temperature of a single goal’s point. The paper put forward a new method of using infrared imaging technology to analysis the infrared radiation of the transmission system, to achieve the goal of monitoring the surface temperature of objects, gives the corresponding hardware circuit and software design.

To improve the design of scientific, rational and security in mine roadway supporting, according to the selection of parameters roadway request, visual expert system was applied to the mine roadway design, which built a database of geological and rock mechanics roadway cross-section database. The use of BP neural network model and the comprehensive fuzzy evaluation model has established roadway parameters of numerical calculation library, which implemented on a roadway surrounding rock classification, roadway design and drawing , as well as three-dimensional visual modeling of the integration and automation with computer. And the system has been proved to be effective in practice.

This paper uses Uroica to analysis underground stress rules and roof movement in 621-01 working face in Western Nalinmiao No.2 Mine. Based on actual survey and theoratic Knowledgement,coal roof, without direct roof but basic roof is sandstone with higher strength,stress rules have been disclosed. The finding of stress rules for intial pressure and peroidic pressure from basic roof will benifit minining in semilar operation.

The development history of machinery and electrical equipment fault diagnosis techniques is reviewed and its study situation is summarized from analytic model-based, system signal processing-based and knowledge-based equipment fault diagnosis methods, the problems and lack of the traditional diagnostic technique are discussed, and the development tendency and research hot problems are proposed.

By Studying on technique of network planning overall scheduling and optimizing power-on or power-off, operating efficiency was increased, pick-up time was decreased, enormous economic benefits was created. By technique of network planning, time of power-on was 1285s in Coal Washery of TangShan Mining. By preliminary optimizing technique of network planning, time of power-on was 660s. By ultimately optimizing technique of network planning, time of power-on was 505s. So time of no-load running was reduced to 780s (about 13min). If time of no-load running was 10min, power rate could save 310,000 yuan every year; in the same time, production time could add 1800s, producing a greater earnings was 6,960,000 yuan every year. 7,270,000 yuan could be saved by energy-saving and synergy every year

According to the structure and working principle of hydro-pneumatic suspension of trackless rubber tire vehicle, this paper builds the nonlinear mathematical model of hydro-pneumatic suspension, the virtual prototype of hydro-pneumatic suspension is built by using ADAMS/Hydraulics software. Simulation is carried out by different frequencies and amplitudes of sine wave on the hydro - pneumatic suspension system, and the characteristics of stiffness and frequency are analyzed, which provides the theoretical basis for design calculation on the hydro - pneumatic suspension system.

Safe production is a major goal of enterprise management. Modernization of management to achieve security Ventilation is to change the backwardness of China's coal mine safety a fundamental measure.

In order to improve the quality of ultra-clean micronized coal water fuel , a process autocontrol system of ultra-clean micronized coal water slurry preparation by ultrasonic intensify treatment has been developed based on virtual instruments. The data of coal water slurry preparation has been managed and shared by the software based on LabVIEW. By use of fuzzy control arithmetic, the technics parameters of ultra-clean micronized coal water fuel preparation are optimized. The granularity and its distribution of ultra-clean micronized coal water fuel fulfilled the qualifications for using in internal-combustion engine.

The output intrinsically safety property of Forward converter is presented in this paper. Optimal design the inductance and capacitance by the minimum of the maximum output short-circuit discharging energy. Improve the stability of the circuit by study on its dynamic characteristics and design the closed-loop feedback. More region will be given for the design of the follow-up link of intrinsically safe power supply. Forward converter output waveform was given by simulating.

Based on the specialty of the high sulfur coal rock from washing high sufur coal process.Put forward to the technology measure for preparation and using of the high sulfur coal rock as resources.Improve its using ratio.realize higher enterprise economic and social benefit.

Abstract: The separation problem of high ash hard-to-separate fine coal slurry is the hot and difficult point of coal experts at home and abroad. This paper analyzes its background, elaborates the advantages and disadvantages of the separation of flotation column, flotation machine and new type fine coal slurry separation equipments to high ash hard-to-separate fine coal slurry, and introduces the new technology of the fine coal slurry separation and the development of the research of the flotation medicament.

The main procedures of fuzzy comprehensive evaluation were described, and the main factors that affect the stability of mining roadway surrounding rock were introduced. The stability of mining roadway surrounding rock was classified through fuzzy comprehensive evaluation, then a man-machine coordination interface was realized by VB program, and the interface greatly simplifies the process of calculation in fuzzy comprehensive evaluation. Through inputting seven index values of the roadway under prediction on the interface, the prediction results will be obtained quickly. In practice, the stability of mining roadway in Jiaoxue No.2 Coal Mine of Zhengzhou Coal Industry (Group) was determined as Ⅳ type through the method of fuzzy comprehension evaluation, and reasonable support form and parameters for the mining roadway were determined by engineering analogy.

The research of coal permeability and its damage under different form of load has great significance about the coupling of mining pressure field, mining-induced fractures field and gas flow field. Based on permeability experiment, the coal permeability is determined under the process of loading-unloading of axial compression and confining pressure. The experimental results were fitted. The test results show that coal permeability declines with the increasing axial compression or confining pressure, respectively following the law of power function decay and the law of exponential decay under the process of loading-unloading. The decrease extent of permeability declining with confining pressure is more stronger than with axial compression.The permeability recovery capability under the process of unloading confining pressure is more less unloading axial compression. The permeability is damaged and irreversible under the process of loading-unloading.

It is researched the application of light-burned coal series metakaolin superfine powder to 950℃ by Raymond　mill in refractory castable. The results show that alumina tundish dafety-lining castable can be completely replaced by light-burned coal　micro-powder to manufacture a new kind refractory castable with a low cost and long life span, high content of mullite, low coefficient of dilatation, high intensity and with little expansion in use. The substitution can decrease largely the product cost of refractory castable.

NO derived from coal combustion is an unnegligible air poilution. The current development of mechanism in Selective catalytic reduction of NOx by hydrogen (H2-SCR) under excess oxygen conditions is reviewed．According to the existing forms of NOx intermediate species, the mechanisms in the H2-SCR are divided and summarized.

The jet pump of vacuum installations is an important part of the mine automatically drainage system, for the problems in the vacuum control process, carried out simulation of flow field and experimental study, discussed the changes of pressure and velocity in the vacuum process, described the main factors of the affect in the jet pump vacuum process, made a strong complement for the oretical analysis.

Abstract: This paper introduces the measures of Anti-jamming on QFR-Ⅱ type high-voltage switch intelligent protector in details. Taken measures such as decoupling circuit, photoelectric isolation, reasonable grounding in hardware. While in software program designed to determine the filtering process, set up software trap and technology measures such as watchdog. Practice shows: these measures used on the QFR-Ⅱ type high-voltage switch Intelligent protectors made a good anti-interference effect.

Abstract: Considering the problem of the variously ambiguous, unknown and uncertain factors of mine ventilation security information, it is necessary to develop a decision-making and processing system which being able to simulate the experts’ thought and the decision process to a certain extent. The system is based on relevant theories of expert system and adopts the advanced Browser/Server mode technology as system structure and Current ASP technology as development tools, with SQL Server 2000 as background management database. This paper focused upon the key technology knowledge base and inference engine of the system.

Through an analytical study of the principle of thermocompression filtration-drying integrated process, the paper sheds light on the technical features of the simple and energy efficient process: With the treatment of flotation concentrate as an example, an experimental study is made of the operating parameters involved in the process. It is pointed out that the dewatering rate is seen to reach a maximum value when the saturated steam dewatering peak surface is at its diffusion stage.

Aimed at inaccurate locomotive localization, non-real time communication and auto switch choice controlling, a Mine locomotive transport monitor system based on ZigBee is developed. The wireless transceiver based on ZigBee communicates to the locomotive dynamically. The information is sent to branch station then to host computer through CAN-bus. Dispatcher can control the switch choice by controlling the electric switch machine with host computer, control the locomotive to cycle operate by the definite operation tasks, realizing the Mine locomotive transportation scheduling safely and intelligently.

Abstract: Using the rich anthracite resources in Zhaotong,Yunnan province,to prepare the formed coke which be suitable for the production of calcium carbide .The influences of the amount of adhesives and the process conditions of carbonization on the quality of formed coke are studied. The relationship between the quality of formed coke and the amount of adhesives or the process conditions of carbonization were discussed by analysising the test data.Lastly, the amount of adhesives and the process conditions of carbonization were determined.

Based on the character and the occurrence condition of rockburst in fold areas， the main reason of rockburst was analyzed，and the targeted prevention was proposed．It is concluded that zonality，orientation，high strength and floor-type shocks of roadway are the important featurer of rockburst behavior in fold areas．Through the measurements of middle-hole and deep-hole blasting，coal seam infusion and deep-hole blasting of hard-roof， the hazard of rockburst in fold areas can be effectively reduced or eliminated．

Our country is one of the countries in which gas disaster is the most serious in the world.Gas becomes the main factor which threaten the mine safety production,so the main problem of mining workface safely is gas explosion.The paper takes the technology of controlling gas during mining the key stratum 2371(1) workface in the distant range coal seams as an example. the technology of gas drainage in the protected coal seam is reported and implemented also，which makes the rate of gas drainage reach up to 88.54% and returns the density of the air-return way to be lower than 0.6%,mining coal and gas safely come true in the face of the short-distance coal seams. The results of the research can be applied under the similar condition coal mine.

Based on the Fast Lagrangian Analysis of Continua calculation program, this article considered the traditional anchorage system as cable-grout-surrounding rock of separated transformer from the law of the pre-stress anchor’s load transferring and anchorage mechanism. The various destructive forms of anchorage system and judging equations were established. The following anchoring effect influencing factors such as pre-stress, anchorage length, anchor cable rigidity, the property of rock and soil mass were simulated by the numerical method. At last, the broken process of anchorage system was dynamically simulated by pull-out test, and the obtained results were credible and more closely accurately compared with the existing conclusion. The reliable reference for the practical application of engineering were provided and the further studies were pointed out.

Coal is an important basic energy. It plays an important role in China’s economic development. The special characteristics of coal production activity determine the special nature of the coal industry accounting. The exploration risk of coal mining companies’ is quite different from oil and gas companies’, so it’s hard to imitate the guidelines for oil and natural gas mechanically. Based on the coal mining companies’ characteristics on exploration, this paper analyzes the current research situation at home, and puts forward some suggestions to perfect China’s coal industry accounting treatment on exploration expenditure.