In order to solve the serious deformation caused by soft rock, easy expansion, wind weathering and cement in the three soft seamroadway of Liuyuanzi Mine, the combined support method of pouring concrete wrapped grouting of reverse bottom arch bottom slab with straight wall semi-circular arch anchor mesh and bottom slab plan was adopted, which effectively developed three soft coal seams and controlled the annual deformation of roadway at about 50mm.
李永建. 刘园子煤矿三软煤层巷道支护技术[J]. 煤炭与化工, 2019, 42(1): 40-42,46.
Li Yongjian. Supporting technology of roadway in three soft Coal seam of Liuyuanzi Mine. CCI, 2019, 42(1): 40-42,46.
