RESEARCH ON LARGE-SCALE TRIAXIAL COMPRESSIVE RHEOLOGICAL TEST OF SOFT ROCK IN DEPTH AND ITS CONSTITUTIVE MODEL
CHEN Weizhong1，TAN Xianjun1，LU Senpeng1，YANG Jianping1，WU Guojun1，YU Hongdan1， WANG Zhengming2，ZHU Lin2
(1. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan，Hubei 430071，China；2. State Investment Energy Company Limited of Xinji，Huainan， Anhui 232171，China)
Abstract：The in-situ rheological test under three-dimensional stress is a very useful way to reflect the actual rheological properties of filed rock mass. The test process，method and results of in-situ large-scale true triaxial test are presented. Variation law of deformation with time is further analyzed；and the experimental curve is described using a nonlinear kinetic creep model. Then，the theoretical rheological equation is established；each parameter of creep model is obtained and the rheological characteristics of deep soft rock are well reflected. The results show that the creep rate of mudstone is not only related to stress state，but also to time. The results can be applied to the estimation of long-term deformation of engineering tunnel in soft rock engineering and design of support，which have important reference values to the optimization design of tunnel support of soft rock.
陈卫忠，谭贤君，吕森鹏，杨建平，伍国军，于洪丹，王争鸣，朱林. 深部软岩大型三轴压缩流变试验及本构模型研究[J]. 岩石力学与工程学报, 2009, 28(09): 1735-1744.
CHEN Weizhong1，TAN Xianjun1，LU Senpeng1，YANG Jianping1，WU Guojun1，YU Hongdan1， WANG Zhengming2，ZHU Lin2. RESEARCH ON LARGE-SCALE TRIAXIAL COMPRESSIVE RHEOLOGICAL TEST OF SOFT ROCK IN DEPTH AND ITS CONSTITUTIVE MODEL . , 2009, 28(09): 1735-1744.
