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According to the statistics, roof and side fall accidents often occur and jeopardize greatly in coal mines. The variation of the strain and stress in the surrounding rocks of the mine roadway can predict the accident. How to obtain the strain and stress is the key point of the prediction. This paper provides a method on the case. Firstly the principle of monitoring stress in surrounding rocks of mine...
In this paper, we propose a new multi-expert decision-making method based on induced OWA operators for coal mine safety evaluation. Aggregation operators are crucial to decision-makers when they make decisions. The Ordered Weighted Aggregation (OWA) is the most common operator to aggregate the arguments that are the exact numerical values. However, the decision-makers may have vague knowledge about...
Coal mine water inrush is a very difficult problems which should be solved more earlier, and it have long plagued safe production of coal mines. The reliable operation of coal mine drainage systems plays a vital role in safe production of coal mines. Based on the non linear relationship of the state parameters of the coal mine drainage facilities, we propose a safety monitoring method based on BP...
The system utilizes the object-oriented analysis method and the broad-based B / S / D software architecture. Then researching and developing the coal mining security equipment's intelligent monitoring and management system of being based on the web-environment, the Web server software on this system using the tomcat6.0. Connecting the database by struts and ibatis dynamic web page technology and framework...
The thin coal mining equipment multi-rank choice and it is traditional choice method subjective capriciousness question, This paper is intended to discuss and analyze the assessment of mining method by the utilization fuzzy set and fuzzy mathematic theory, the equipment to carry on the multi-ranks to decompose, carries on the quantification recursive operation according to the normalizing formula,...
Presently, Chinapsilas coal enterprises are under the merger and acquisition (M&A) phrase environment. Enterprises M&A are frequent. As coal enterprises M&As have bigger uncertainty and risk, facing all kinds, varying degree objectively exist risks, coal enterprises decision-makers deeply feel unable, and urgently need related theoritcal guidance and help. The paper from three aspects...
The coalmine gas hazard affected safety of China coalmine production most. As there were lots of complicated and uncertain factors during gas accidents emergency rescue and making decisions process, accurate decisions can not be drawn by mathematics models with present information monitored by the KJ series monitoring systems such as KJ90, so experiences of former questions were urgently required...
Based on the ideology of "using the monitor data to reflect the production safety and using the risk analysis and safety evaluation methods to guide safety management to realize the objection of mine coal safety state warning and assistant decision-making support system", with Bofang coal mine of Shanxi Orchids Corporation's practical experience in safety state management, we set up a warning...
In order to construct digital coal mine, a three layer model for digital coal mine model is proposed in this paper. Two basic platforms, the uniform transmission network platform and the uniform data warehouse platform, are discussed. A real 1000 M industrial Ethernet transmission platform based on Siemens PROFINET is established for Yangchangwan coal mine. The network platform is an information superhighway...
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