薄基岩浅埋深复合顶板综采面过沟期间的回采技术

Safety mining technology for crossing ditch of fully mechanized mining face with thin bedrock, shallow depth and composite roof

浅埋深、复合型顶板工作面回采期间矿压显现明显,在回采期间可能出现冒顶、溃沙、底臌等情况,工作面在推进过程中要通过地表的三元沟两支沟,为了掌握浅埋深、复合顶板工作面过特殊条件期间的矿压显现规律,特针对哈拉沟煤矿22206工作面矿压显现特点进行分析,得出浅埋深、复合顶板过特殊条件地段的矿压显现规律,并采取有效的防范措施,为工作面的安全回采提供了依据。

Because the strata pressure of mining roof with shallow-buried and compound roof is obvious,roof caving,sand burst and floor heave may occur during mining.The surface of No.22206 working face in Halagou Coal Mine has two branches of Sanyuan ditch.By analyzing the strata behavior regularity under special conditions of No.22206 working face,and taking effective preventive measures,the safety mining of working face was guaranteed.