短孔瓦斯抽放技术的研究应用

The Research and Application of Shallow Hole Gas Drainage

为提高埋藏深、低透气性、动力现象显著煤层工作面的瓦斯预抽效果，对工作面瓦斯抽放新技术进行了研究。根据矿山压办分布规律和工作面前方煤体受采动影响卸压后透气性显著提高、煤层压力显著降低的特点，研究了卸压区短孔瓦斯抽放技术，研究结果表明该抽放技术可行、系统可靠，能有效提高超前排放钻孔瓦斯排放效果、显著降低煤与瓦斯突出危险性，这对解决低透气性、高地应力煤层的快速、安全掘进和生产具有实际意义。

In order to improve the effect of gas pre-drainage of coal buried deep, low permeability, dynamic phenomenon significant, New gas drainage techniques are studied. According to pressure distribution, the permeability of coal increased and the gas pressure lowered, shallow holes gas drainage technology is re- searched. The results show that the drainage techniques are feasible, system reliable and can improve the effect of lead emissions from drilling gas emissions, reduce the risk of gas outburst significantly. It is prac- tical significance to achieve safe production