深部巷道底臌机理及控制对策研究

底臌是深部软岩巷道常见的病害之一。根据软岩支护理论,结合工程实际,提出了锚索+底角注浆锚杆控制底臌方案。模拟结果表明:采用锚索护顶,同时选择具有较高刚度和抗弯能力的注浆底角锚杆,合理布置参数,可以有效切断滑移线场,达到控制底臌的目的。

Study on Floor Heave Mechanism and Control Countermeasures of Deep Roadway

The floor heave is one of the problems that are commonly seen in soft rock roadways. The technical scheme, which uses anchor cable and floor corner grouting anchor bolt to control floor heave of the soft rock roadway, is raised based on soft rock support theory and actual engineering. Numerical simulation results show that it may effectively cut the slip-line field and achieve the goal of controlling floor heave if anchor cable is used for canopy guard and at the same time, the floor corner grouting anchor ...