中文摘要：

针对贺西煤矿矿井煤层瓦斯赋存及地质条件,采取基于保护层开采技术的煤层瓦斯治理措施,以消除其突出危险性.在抽采钻孔的布置及抽采形式方面,形成了地面钻孔抽采与井下钻孔抽采相结合,卸压抽采与预抽相结合,穿层钻孔与顺层钻孔相结合,采前抽采与采中抽采相结合的立体瓦斯抽采模式,结合各煤层工作面采取的不同通风方式,取得了显著的瓦斯抽采效果,实现了矿井的安全高效开采.

英文摘要：

According to the occurence conditions of coal seam gas and geological conditions of Hexi coal mine, the coal seam gas control measures based on mining technology protective layers are taken so as to eliminate the gas outburst danger. In aspect of extraction of borehole layout and extraction forms, the stereoscopic gas extraction modes are formed with combing with the ground drilling drilling extraction, pressure relief extraction and extraction in advance, crossing extration and downhole borehole and bedding borehole, extraction before mining and extraction in the process of mining. Combined with the different ventilation modes of different coal seam working faces, the significant effect of the gas extraction is ob- tained and the goal of safe and efficient mining of the mine is achieved.