摘要
基于统一强度理论 ,推导得出了硐室形变围岩压力的统一解 ,可以广泛适用于岩土类材料 ,修正的芬纳公式为其特例。当不同程度地考虑σ2 的影响时 ,可得出一系列的围岩压力和塑性松动圈半径 ,根据岩石力学性质试验结果和实际工程情况 ,合理确定统一强度理论参数 b,可正确地确定围岩压力的大小 ,从而合理地选择支护结构。由计算结果得出 ,取不同的 b值对塑性圈半径影响不大 ,但对围岩压力影响较大。
Based on unified strength theory, the unified solution of rock pressure under cave deformation was deduced. It can be applied to geomaterials, and the Finner equation is a special case. Considering the aftection of σ 2, the rock pressures and the radius of plastic loosening zone were got. The proper value of b was defined according to the experimental results of rock mechanic characteristics and practical engineering, so the rock pressure can be calculated correctly to choose retaining method properly. The results show that the value of b has a little effect on loosening zone, but has a big effect on rock pressure.
出处
《长安大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2003年第3期1-4,共4页
Journal of Chang’an University(Natural Science Edition)
基金
国家自然科学基金项目 ( 5 992 40 3 3 )
国土资源部岩土工程开放研究实验室资助项目 ( KF0 11)
