望云煤矿开拓大巷穿越断层破碎带支护研究

Research on Support for Developing Main Roadway Crossing the Fault Broken Zone in Wangyun Coal Mine

为保障望云煤矿开拓大巷穿越断层破碎带的施工安全及长期稳定,通过钻孔窥视、数值模拟等方法,探究断层构造影响下围岩松动圈发育特征,以组合拱理论为基础对锚杆、锚索支护进行优化设计,采用可伸缩U型钢架提高支护强度,数值模拟验证支护方案的可行性,实现了快速顺利通过F15断层,为后续巷道支护及施工提供可靠参考。

In order to ensure the safety and long-term stability of the construction of Wangyun Coal Mine's development main roadway crossing the fault broken zone,the development characteristics of the surrounding rock loose zone under the influence of fault structure are explored by means of drilling peep and numerical simulation.Based on the combined arch theory,the anchor bolt and anchor cable support are optimized and designed.The telescopic U-shaped steel frame is used to improve the support strength.The feasibility of the support scheme is verified by numerical simulation verification,and the fast and smooth passage of the F15 fault is achieved,which provides reliable reference for subsequent roadway support and construction.