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平煤集团七矿地质条件复杂,受断层影响,在戊四采区布置了一个“L”形综采工作面。回采时须先由南向北回采,然后旋转调向90°,使采面由南北方向俯采不停产调整为东西方向正走向回采。长壁后退式全部垮落法综采工作面利用伪倾角控制技术、防倒架技术和不等长单向进刀技术等综合管理技术实现90°旋转回采,为复杂地质条件下综采工作面的采煤方法探索出了一条成功之路。
The Pingdingshan Coal Mine Group has complicated geological conditions and affected by the fault, an “L” -shaped fully mechanized coal mining face is arranged in the Yusam mining area. The first mining from South to North mining, and then transferred to 90 ° rotation, so that mining face from the North-South direction of non-stop subsidence adjustment is heading east to the direction of mining. Longwall Retractable Full Caving Method Fully mechanized coal mining face adopts 90 ° rotary mining with integrated management technology such as pseudo-dip control technology, anti-collapse frame technology and unequal length unidirectional feed technology, and is a comprehensive mining face under complicated geological conditions The mining method to explore a successful road.