RocSupport在隧洞初期支护数值分析中的应用

Application of RocSupport in Numerical Analysis of Tunnel Initial Support

不同地质条件下,泄洪输水放空隧洞开挖后的初期支护对减少围岩变形,保障施工安全有重要意义。采用RocSupport模拟了泄洪输水放空隧洞开挖及初期次支护过程,分析了不同地质条件下(Ⅳ、V类围岩)的围岩稳定性,得出V类围岩收敛变形效率较快,应及时支护并考虑预留变形量,为设计成果进行数值校核,确保初期支护措施的可靠性。

Under different geological conditions,the initial support after excavation of the flood discharge and water conveyance drainage tunnel is of great significance to reduce the deformation of surrounding rocks and ensure construction safety.In this paper,RocSupport is used to simulate the excavation and initial support process of the flood discharge and water conveyance vent tunnel,and to analyze the stability of surrounding rocks under different geological conditions(IV and V surrounding rocks).The result shows that the convergence and deformation efficiency of V-type surrounding rock is very fast.It is necessary to support in time and consider the reserved deformation to check the value for design results and ensure the reliability of initial support measures.