Abstract： In response to the problems of weak and fragile surrounding rock and severe floor heave in the high stress return air uphill roadway of Pingmei No. 8 Mine, a multi-level joint support scheme of "concrete+anchor mesh+grouting+pressure relief groove" was proposed by adopting the support concept of bottom plate pressure relief and surrounding rock anchor injection. Combined with UDEC numerical software, the width of the pressure relief groove was determined to be 1.2 m and the depth to be 2.0 m. Through drilling and observation, it was shown that the overall integrity of the surrounding rock in the tunnel was good, and the deformation of the tunnel had been effectively controlled.
李迎松，郑明明，胡 磊，徐 阳，王旭瑞. 高应力巷道底板卸压及围岩锚注支护技术[J]. 煤炭与化工, 2023, 46(8): 20-23.
Li Yingsong, Zheng Mingming, Hu Lei, Xu Yang, Wang Xurui. Support technology of floor pressure relief and surrounding rock bolt-grouting in high stress roadway. CCI, 2023, 46(8): 20-23.
