寺家庄煤与瓦斯突出机制分析  

Analysis of coal and gas outburst mechanism in Sijiazhuang Coal Mine

作　　者：张浪 ZHANG Lang(Mine Safety Technology Branch of China Coal Research Institute, Beijing 100013, China;State Key Laboratory of Coal Mining and Clean Utilization （China Coal Research Institute） , Beijing 100013, China)

机构地区：[1]煤炭科学技术研究院有限公司安全分院,北京100013 [2]煤炭资源高效开采与洁净利用国家重点实验室(煤炭科学研究总院),北京100013

出　　处：《煤炭工程》2018年第7期84-86,共3页Coal Engineering

基　　金：国家重点研发计划(2017YFC0804207);国家自然科学基金(51604154)

摘　　要：煤与瓦斯突出绝大多数发生在地质构造带,研究构造煤与原生煤的差异性对于探索煤与瓦斯突出机制意义重大。为探索阳煤集团寺家庄矿井煤与瓦斯突出事故频发的原因,对原生煤和构造煤煤样进行不同平衡压力条件下的恒温瓦斯放散试验,得到原生煤和构造煤在瓦斯放散特征方面存在显著差异,尤其在瓦斯放散初期,构造煤的瓦斯解吸速度明显高于原生煤,这一差异也体现于煤与瓦斯突出预测的现场测试结果,掘进过程中钻屑解吸指标K1值与构造煤厚度呈正相关关系,研究可知寺家庄煤矿15号煤层的煤与瓦斯突出受构造煤控制作用明显。The vast majority of coal and gas outburst occurred in geological structures, therefore, study on the difference between tectonic coal and primary coal is of great importance for exploring coal and gas outburst mechanisms. In order to explore the frequent occurrence of coal and gas outburst accidents in Shijiazhuang Coal Mine, by conducting constanttemperature gas emission test under different equilibrium pressure conditions for primary coal and tectonic coal samples, significant difference in the gas emission characteristics of primary coal and tectonic coal were obtained, especially for the initial stage of gas emission, gas desorption speed of tectonic coal is significantly higher than that of primary coal, and this difference was also reflected in the field test results of coal and gas outburst prediction, desorption index of drill-cuttings, K1 values, and tectonic coal thickness was positively correlated, the research shows that the coal and gas outburst in No. 15 coal seam of Sijiazhuang Coal Mine is obviously controlled by tectonic coal. This research result can provide technical support for coal mine and gas outburst prevention and control.

关 键 词：煤与瓦斯突出 构造煤 瓦斯放散特征 解吸动力学 钻屑解吸指标 

分 类 号：TD712[矿业工程—矿井通风与安全]