岩土力学2009，Vol.30Issue(11)：3393-3398,6.
基于统一强度理论的巷道围岩抗力系数研究
Investigation of rock resistant coefficient in rocks around tunnel based on unified strength theory
摘要
Abstract
The rock resistant coefficient K is an important parameter and it reflects the resistance of the rock around the tunnel in the geotechnical engineering. A formula of rock resistant coefficient is derived based on unified strength theory, which can be adopted to obtain rock resistant coefficient in other situations or strength thoeries simplified by assuming the parameter value in the formula. The strength differential effect, intermediate principal stress effect and the ground water permeation effect are considered in the formula. The results indicate that the coefficient b, cohesion C ,friction angle φ, the pore water pressure ,the in-situ stress and the lining pressure all have significant influences on the rock resistant coefficient K.关键词
岩土工程/统一强度理论/围岩抗力系数/渗透作用/中间主应力效应Key words
geotechnical engineering/ unified strength theory/ rock resistance coefficient/ permeation effect/ intermediate principal stress effect分类
建筑与水利引用本文复制引用
马青,赵均海,魏雪英..基于统一强度理论的巷道围岩抗力系数研究[J].岩土力学,2009,30(11):3393-3398,6.基金项目
教育部博士点基金资助项目(No.20040710001) （No.20040710001）
陕西省自然科学基金项目(No.SJ08E204). （No.SJ08E204）
