综掘面迎头CO_2气相压裂卸压增透技术研究  

Study on Gas-phase Fracturing Pressure Relief and Permeability of Heading CO_2

作　　者：杨明建 

机构地区：[1]潞安集团余吾煤业有限公司,山西长治046103

出　　处：《煤炭技术》2017年第8期195-196,共2页Coal Technology

摘　　要：巷道掘进过程中地质条件复杂,常有瓦斯异常涌出现象,严重制约着工作面的快速掘进。为了提高巷道瓦斯涌出的均匀性、杜绝瓦斯突然涌出造成瓦斯预警超限,通过CO_2的液-气两相转化释放能量对工作面煤体提前卸压、增加导通裂隙、驱替煤层瓦斯达到煤体增透、掩护掘进。In the process of roadway excavation, the geological conditions are complex, and the abnormal gas emission often occurs, which seriously restricts the rapid excavation of the working face.In order to improve the uniformity of gas emission in the roadway and prevent the gas from pouring out suddenly, the gas pre-warning is overrun. By releasing the energy from the liquid-gas two-phase transformation of CO2, the coal body is discharged in advance and the fracture of the coal seam is increased. To increase the permeability of the coal, cover tunneling.

关 键 词：CO2气相压裂 增透 释放瓦斯 卸压 

分 类 号：TD712[矿业工程—矿井通风与安全]