摘要
根据综采工作面瓦斯运移特点和涌出特征,结合矿区综采面具体状况,提出利用交叉钻孔抽放瓦斯的观点,在合理确定钻孔高程差、钻孔长度、钻孔角度等交叉钻孔参数的基础上,设计布置交叉钻孔预抽本煤层综采工作面瓦斯,通过抽放前后的工作面瓦斯浓度对比,证实了交叉钻孔抽放瓦斯的高效性,有利于煤矿的安全生产。
Based on the features of gas migration and emission on the fully-mechanical working face, the study proposed cross drill for gas drainage. On the determination of drilling parameters, including altitude difference, length, and angle of boreholes, the gas pre-drainage with cross drill was designed. The comparison of gas concentration before and after the drainage has proved the efficiency of the gas drainage technology, which is useful for safety production in mines.
出处
《山西煤炭》
2013年第12期36-38,共3页
Shanxi Coal
关键词
交叉钻孔
瓦斯参数
抽放效果
cross drill
gas parameters
drainage effect
