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以平煤股份二矿某软岩巷道变形失稳为研究对象,通过分析得出该巷道变形原因与围岩裂隙发育及支护强度有关,需要提高巷道破碎围岩的残余强度,同时加大一定范围内的支护力度,控制围岩变形;决定采用浅部高强锚杆、中部注浆、深部注浆锚索加固的三层组合拱联合支护结构对巷道进行维修,通过对维修后的巷道进行围岩变形监测,得出该支护方式有效地减少巷道围岩变形量,解决了该软岩巷道大变形失稳的问题。为该矿后续巷道支护以及相近条件下巷道的治理提供了借鉴。
Taking the deformation and instability of a soft rock roadway in Pingdingshan No.2 mine as the research object, it is concluded that the cause of the deformation of the roadway is related to the development of fractured rock and the supporting strength of the surrounding rock. It is necessary to improve the residual strength of the broken rock in the roadway while increasing the certainty Within the scope of the support force to control the deformation of surrounding rock; decided to use the shallow high-strength bolts, the central grouting, deep grouting anchor reinforcement of the three-story combined arch support structure of the roadway maintenance, through the repair of the roadway The deformation monitoring of the surrounding rock is carried out. The result shows that the supporting method can effectively reduce the deformation of surrounding rock and solve the large deformation instability of the soft rock roadway. It provides a reference for the subsequent mine roadway support and tunneling under similar conditions.