【摘要】 利用穿层钻孔抽放、开采顶分层、使用移动抽放泵及本煤层高抽巷等技术综合治理工作面瓦斯 ,保证了放顶工作面的顺利进行 ,杜绝了瓦斯超限现象。更多还原

【Abstract】 In order to ensure the smooth operation of a coal face with caving mining and put an end to disallowed gas concentration,several comprehensive gas control techniques were used for such face including gas drainage from cross-seam holes,top slice mining,gas drainage with a movable pump and gas drainage from roadways arranged in the seam roof。更多还原