School of Resources and Environmental Engineering, Shandong University of Science and Technology National
Key Lab of Gas Disaster Control and Emergency Technology Chongqing Research Institute, China Coal Technology
and Engineering Group

为了确定煤与瓦斯突出矿井的预抽效果检验指标——瓦斯含量临界值,根据钻屑瓦斯解吸指标K1与煤层瓦斯含量之间的关系,利用瓦斯含量测定技术,结合现场统计分析方法及防突实践,通过对比分析、修正,预先提出一个预抽效果检验指标——瓦斯含量临界值,并进行区域验证。结合山西晋城大宁矿的实际情况,确定了大宁矿3号煤层赋存正常区域的瓦斯含量临界值为9 m3/t,地质构造异常区域的瓦斯含量临界值为7 m3/t,实践表明:研究结果可为煤与瓦斯突出防治提供依据。

In order to determine the pre- drainage effect checking index of gas content critical value in the coal and gas outburst mine, according to the relationship between the gas desorption index K1of the drilling cuttings and the gas content of the seam, in combination with the gas content measuring technology, the site statistic analysis method and the outburst prevention practices, a gas content critical value was provided firstly as the pre- drainage effect checking index critical value by contr astive analysis and correction and was verified in a region of the mine. In combination with the actual condition of Shanxi Jincheng Daning Mine, the gas content critical value in the deposition normal region of No.3 seam in Daning Mine was determined as 9 m3/ t and the gas content critical value in the abnormal region of the geologica | structure was 7 m3/ t. The site practices showed that the study achievements would provide the basis for coal and gas outburst prevention.

国家科技重大专项资助项目(2011ZX05040-003-003)；