Abstract：Three types of loading modes are designed in which a high pore water pressure is applied；and creep tests are performed respectively to study the influence of pore water pressure on creep properties of rock. Firstly，with the normal marble samples，the triaxial tests in the three loading modes are performed to get the axial and lateral creep deformation curves as well as the failure patterns of the rock samples. Then the analyses and comparisons of the test results of axial，lateral，shear and volumetric strains as well as failure patterns are performed. Finally，based on the analysis and comparisons，the influence of high pore water pressure on the creep and failure of rock is analyzed. The research shows that the effects of the pore water pressure on creep of rock are obvious with the influential coefficient of pore water pressure less than 1，but approaching to 1. Under the action of high pore water pressure，the strength，strain and the time of creep to failure are lessened greatly. Though the samples are all in shearing failure，the failure under high pore water pressure is more sudden. There might be no definite equivalent strain under which the tertiary stage of creeps under different loading conditions begin to occur. And the pore water pressure has no effect on the volumetric strain before failure occurs. The results can be applied to guide the establishment of the nonlinear creep constitutive model of rock under high pore water pressure. And it is also useful for guiding the design and construction of rock structures under high pore water pressure.
佘成学，崔旋. 高孔隙水压力对岩石蠕变特性的影响[J]. 岩石力学与工程学报, 2010, 29(08): 1603-1609.
SHE Chengxue，CUI Xuan. INFLUENCE OF HIGH PORE WATER PRESSURE ON CREEP PROPERTIES OF ROCK. , 2010, 29(08): 1603-1609.
