TEST STUDY ON CREEP CHARACTERISTICS OF DAM FOUNDATION ROCKFILL OF XILONGCHI LOWER RESERVOIR
LI Haifang1，ZHANG Qincheng2，XU Zeping1，WEN Yanfeng1，CHEN Ning1
(1. Department of Geotechnical Engineering，China Institute of Water Resources and Hydropower Research，Beijing 100044，China；2. HydroChina Beijing Engineering Corporation，Beijing 100024，China)
Abstract：The creep behaviors and models of Xilongchi main rockfill and dam foundation gravel are studied through triaxial creep tests. The factors and value range of creep model parameters are analyzed. Based on the test results，the axial and volumetric creep characteristics can be described by a power function in which model parameters are determined by test for creep characteristics. With the stress level increasing，the initial axial creep a of the main rockfill increases while the axial creep strain exponential b decreases obviously，which can be described by exponential function and linear function respectively. The change ranges of the other parameters are achieved by the test results.
李海芳，张沁成，徐泽平，温彦锋，陈宁. 西龙池下水库坝基坝料蠕变特性试验研究[J]. 岩石力学与工程学报, 2009, 28(S2): 3376-3382.
LI Haifang1，ZHANG Qincheng2，XU Zeping1，WEN Yanfeng1，CHEN Ning1. TEST STUDY ON CREEP CHARACTERISTICS OF DAM FOUNDATION ROCKFILL OF XILONGCHI LOWER RESERVOIR. , 2009, 28(S2): 3376-3382.
