顺层长钻孔预抽煤层瓦斯数值模拟研究  

Research on Numerical Simulation of CMM Pre-extraction through Long Borehole along Coal Seam

作　　者：胡守涛[1] 陈西华 刘欢[1] 张津梁[1] 

机构地区：[1]中国矿业大学(北京)资源与安全学院,北京100083 [2]永贵五凤煤业有限责任公司,贵州551600

出　　处：《中国煤层气》2014年第5期39-43,共5页China Coalbed Methane

摘　　要：以丁集矿11-2煤层为对象,使用COMSOL数值模拟软件模拟在煤层实施顺层长钻孔预抽煤层瓦斯措施后钻孔周围瓦斯压力分布规律。通过模拟不同钻孔长度和不同孔间距条件下的钻孔周围瓦斯压力分布规律来得出不同条件下顺层长钻孔的控制范围,为顺层长钻孔的参数优化提供指导。Distribution of gas pressure around the boreholes was simulated by numerical ：simulation Software COMSOL after coal mine gas was pre-exaeted through long boreholes along coal seam based on No. 11 -2 coal seam in Dingji coal mine. The control range of long boreholes under different condition was obtained by simulating the distribution of gas pressure around the boreholes with different drilling length and different drilling spacing, which can guide the parameter optimization of long boreholes along coal seam.

关 键 词：顺层长钻孔 数值模拟 煤压力 

分 类 号：TD712[矿业工程—矿井通风与安全]