干河煤矿松软破碎半煤岩巷支护技术优化研究

Optimization of Support Technology for Soft and Broken Semi-coal Rock Lane in Ganhe Coal Mine

为解决干河煤矿三采区辅助运输巷掘进初期巷道持续变形的问题,通过围岩位移监测、数值模拟等方法,依据具体的地质条件建立相应的数值模型。从锚杆锚索参数、底板支护等几个方面进行支护方案优化,设计采用锚网索喷+反底拱联合支护技术。结果表明,新方案掘进期间巷道围岩成巷后快速稳定,取得了良好的支护效果。

In order to solve the problem of continuous deformation of roadway in the initial stage of auxiliary transportation roadway excavation in the third mining area of Ganhe Coal Mine,the corresponding numerical model is established according to the specific geological conditions through the methods of surrounding rock displacement monitoring and numerical simulation.According to the specific geological conditions,the corresponding numerical model is established,and the supporting scheme is optimized from several aspects,such as anchor cable parameters,floor support and so on.The results show that the surrounding rock of roadway is fast and stable during the excavation of the new scheme,and good supporting effect is obtained.