岩土工程学报2012，Vol.34Issue(2)：349-354,6.
断续节理扩展算法在隧道围岩稳定分析中的应用
Application of fracturing algorithm of intermittent joints in stability of surrounding rock
摘要
Abstract
According to the phenomenon of attenuation of mechanical parameters in rock failure, the strength criterion for intermittence jointed rock mass is proposed by use of the attenuation formula of virtual joint mechanical parameters based on the Jennings Criterion. The strength criterion for intermittent jointed rock mass and the attenuation formula are applied into the DDA code to complete the computation program of analyzing the initiation, extending and connecting of rock fxactures, and then the validity of algorithm is verified by making comparison between the computed results and the shear test ones. At last, this algorithm is employed to analyze the stability of surrounding rock of Jingiishan Tunnel, which is a multiple-arch tunnel with eight traffic lanes. The simulated results show the influences of joint distribution features on the surrounding deformation and give the characters of surrounding displacement. It is shown that the fracturing algorithm of intermittent jointed rock mass is capable of analyzing the stability of tunnels.关键词
断续节理/隧道工程/扩展算法/稳定分析Key words
intermittent joint/tunnel engineering/fracturing algorithm/stability analysis分类
建筑与水利引用本文复制引用
王华牢,许崇帮,夏才初..断续节理扩展算法在隧道围岩稳定分析中的应用[J].岩土工程学报,2012,34(2):349-354,6.基金项目
国家自然科学基金项目(50579088) （50579088）
交通运输部公路科学研究所基金项目(2011) （2011）
