【摘要】 通过分析岩巷过大煤常规支护方法中存在的问题,重点介绍了瓦斯突出煤层用超前钢管支护通过的方法,解决了在常规支护方法中开采后期出现的冒顶事故、煤岩震落、二次支护和瓦斯聚集等问题,在实际应用中取得了良好效果。更多还原

【Abstract】 Here we emphatically introduced an advanced steel rube shoring method in the coal bed that there are much more firedamp . It solved many problems in the later exploitation period when using ordinary shoring method, for instance ,risk peak accident ,coalrock shock falling ,twice shoring and firedamp conglomeration etc. It achieved a good result to put it into practice.更多还原