不同支护条件下巷道围岩稳定性数值模拟研究

Numerical simulation of surrounding rock stability of roadway under different supporting conditions

为了确保矿井的安全生产,模拟分析了不同支护方案下的围岩稳定性,然后结合双壳支护理论,最终确定最优的支护断面,介绍了原支护方案的缺点,采用双壳锚注支护理论,结合现场实际地质条件,设计了不同锚杆、锚索支护参数,建立了巷道数值模型,对4种支护方案进行了模拟,分析了巷道围岩位移特性。

In order to ensure the safe production of mines,this paper simulated and analyzed the stability of surrounding rock under different support schemes,and then combined the theory of double-shell support to finally determine the optimal support section,and introduced the shortcomings of the original support scheme,based on the theory of shell anchoring and support,combined with the actual geological conditions of the site,designed different support parameters of anchor and cable,established numerical model of roadway,simulated four kinds of support schemes,and analyzed the displacement characteristics of roadway surrounding rock.