十字顶梁在我矿五个下分层工作面端头推广使用后,工作面安全出口有了显著的改善,回柱放顶时不易摧棚子,解决了巷道支护回收难的问题。在双增双节中,修旧利废制造十字梁,使每个工作面每月节约坑木10～17米~3,年纯效益提高31512元,五个工作面的平均月产量 Cross roof beam in mine five under the end of the layered face to promote the use of the safety exit face has been significantly improved, back to the column when the roof is not easy to destroy, to solve the problem of roadway support difficult to recover. In the double-double, the repair of old scrap metal cross beam, so that each face save pit 10 to 17 m ~ 3, the annual net profit increased 31,512 yuan, the average monthly production of five faces