站柱钻孔抽放技术在工作面瓦斯治理中的应用

The Application of gas drainage by stand-pillar hole in gas control in working face

本文利用实测资料，分析了7124工作面瓦斯涌出规律，在回风巷创新使用站拄钻孔实施埋管抽放以来，有效地解决了瓦斯超限问题。实施该项技术以来，回采工作面上隅角瓦斯超限次数大幅度下降，回风瓦斯浓度由原来的0．85％下降为0．5％～0．6％，为工作面安全、高效回采提供了保障。

The article utilize the actural measured material to analyze the law of gas emission in 724 working face, since the beried pipe discharge method has been utilized with stand-pillar in return air way, gas exceed-limit problem was effectively solved. Since this technique has been used, the number of gas exceed-limit in the angle of up coner of working face was greatly reduced, the gas concentration of return air was lowered from original 0.85% to 0.5~0.6%, thus provide the guarantee for safety in working face and high efficient gas recovery.