煤田地质与勘探Issue(6)：24-28,5.DOI:10.3969/j.issn.1001-1986.2014.06.005
煤与瓦斯突出过程中的瓦斯压力效应
Gas pressure effect in the process of coal and gas outburst
摘要
Abstract
In order to investigate the gas pressure effect on the process of coal and gas outburst, similar simulation exper-iments were carried out for coal and gas outburst under the conditions of 5 different gas pressure and 3 axial stress with self-developed simulation test system and large medium hard coal sample when the moisture content, proportioning, coal sample forming pressure and other parameters are constant. Experiments show that there is a gas pressure threshold, when the coal and gas outburst exceeds this threshold, the higher the gas pressure becomes, the greater the relative inten-sity of outburst happens, and relative intensity and gas pressure shows positive index, gas pressure has a certain degree of crushing and conveying of extruded pulverized coal as the outburst dynamic, can form obpyriform outburst hole with small mouth and large venter, and the axial stress has a positive role on the outburst of gas-bearing medium hard coal.关键词
煤矿/瓦斯压力/模拟实验/煤与瓦斯突出/相对突出强度Key words
coal mine/gas pressure/simulation experiment/coal and gas outburst/relative intensity of outburst分类
矿业与冶金引用本文复制引用
韦纯福,李化敏,袁瑞甫..煤与瓦斯突出过程中的瓦斯压力效应[J].煤田地质与勘探,2014,(6):24-28,5.基金项目
国家重大基础研究发展计划(973计划)项目(2012CB723103)；河南省瓦斯地质与瓦斯治理重点实验室基金项目(WS2012A10) （973计划）
国家自然科学基金项目(51274086；51104058) （51274086；51104058）
