When the water level of the earth-rockfill dam changes rapidly,additional deformation often occurs due to material slaking,which affects the deformation and stress-strain state of the earth-rockfill dam.The current research fo-cuses on the slaking deformation of coarse-grained materials,and the research on the slaking deformation of clay materials is rare.In this study,the slaking deformation test was carried out by using the"single-line method"combined with the transitional clay of the dam core wall of Daxigou reservoir.The results show that the slaking deformation of clay material is smaller than that of coarse-grained material,and the difference is more obvious when the stress level is high.The rela-tionship between slaking axial strain and shear strain is similar to that of coarse-grained material,and the slaking axial strain and volumetric strain of clay are generally linear.The existing slaking deformation model of coarse-grained materi-als is not suitable for reflecting the slaking shear strain of clay.In order to accurately describe the slaking deformation model of clay materials,considering the number of parameters and accuracy was proposed.
关键词
土石坝/粘土湿化/湿化试验/单线法/湿化经验模型
Key words
earth-rockfill dam/clay slaking/slaking deformation test/single-line method/slaking deformation model
维普
万方数据