Status and Prevention Countermeasures of Coal and Gas Outburst Accidents in China

The summarization was conducted on the status and features of the outburst accidents on the large outburst accidents occurred from 2006 to 2012 in Ch ina based on the ownership, provinces and cites as well as mine gas grades of the coal mine enterprises as well as the outburst prevention measures. The summarizati on showed that the outburst accidents were maximally occurred in the vllage and town ownership mines, the state owned key mines would also have the risk of the maj or outburst accident occurred and Guizhou, Hunan, Yunnan, Sichuan, Chongqing and the south provinces and cities would be the serious disaster regions of the outbur st accident occurred. Therefore, related prevention countermeasures were provided from the aspects of the improved outburst prevention and control standards, implem ented regional comprehensive outburst prevention measures, " four-in-one" management and protection, outburst prevention training and others. According to the statu s of the regional gas comprehensive control, technical measures were provided to ensure the outburst measure design in effect and implementation in position, borehol e in effect and borehole sealing seriously.