The Research And Application Of The Three-dimensional Method In Coalmine Gas Explosion Hazard Identifiction

Since the20thcentury, with the rapid development of the coalindustry, China’s coal production is always lay in the first place in the world. itssecurity issues are also increasingly prominent. Security has become the majorfactor in the development of the coal industry. Nowadays, the party and thegovernment pay more attention in coalmine safety, China has developed manylaws, regulations and different measures in coalmine safety, but the grimsituation has not been a fundamental changed, coalmine accidents happen againand again. The reason is that the mine hazard awareness of potential securityrisks have not attracted enough attention. In coalmine safety issues, the gasdisaster is the first killer. The gas explosion hazard is a complex socio-technicalsystem, containing man-machine-things-circumstances-management, and otherdifferent factors. Comprehensive and systematic understanding of a variety ofhazards resulting in gas explosion, is an urgent need to address the issues.Therefore, this paper use the fault tree analysis method to analysis the structureand the mechanism of the gas explosion system based on the three categories ofthe hazards, then carry out the hazard identification in a new perspective, hastheoretical and practical significance.By research and extensive data collection, summed up the status and theproblem in coalmine hazards identification. To sure the basic event in gasexplosion, do questionnaires in coalmine frontline staffs and managers, thenanalysis the collected statistical, and according to the design principles, toestablish the basic events. Then from the gas gathering, detonated the source offire and the oxygen content to build the gas explosion accident hazard tree, atlast the fault tree is divided into21basic underlying events. Then use the FAHPand entropy method to determine the integrated weights. Using MATLAB programming software to do calculate, it can reduce the manual calculationerrors, resulting in more accurate conclusions. Finally, show the results in thethree-dimensional system, to see the severity level of the risk, recognizable andthe trend more intuitive. In order to verify the usefulness of the identificationsystem, do research in the X coalmine in Shanxi Province as an example. First,do questionnaire for the basic events and their weight, and then through theprogramming software, input the data and output the results, and the using thethree-dimensional identification method in coalmine gas explosion hazard, getthe graph of the mine. By this way, find the hazards in gas explosion anddevelop practical measures. Finally, give measures and suggestions to the mainissues of the coalmine gas explosion hazards identification.Traditional research in coalmine gas explosion is based on the degree ofdanger and identify analysis, in this paper, development of the danger added tothe identification system, develop a three-dimensional identification system, itis better to a comprehensive analysis of the degree of risk to each basic event, inthis way, provide more comprehensive theory to relevant department of thecoalmine safety management system. The three-dimensional method incoalmine gas explosion hazard identification is better to have a fully grasp inthe coalmine safety management capacity, in some degree, it can improve theaccuracy of decision-making and take the protection of the coalmine productionsafety, so the paper has a greater practical value.