In the design and stability of tailings pond,the mechanical properties of tailings are an important basic parameter.In this paper,the micro-particle analysis and the two kinds of tailings of tailings and fine sand triaxial test,shear test and triaxial test.The test results show that:(1 )under the action of gravity stress,the change of pore ratio of fine tailings is significantly stronger than that of coarse tailings,permeability and permeability coefficient gradually decrease with the increase of depth,and the compression resistance is opposite.(2)the consolidation fast shear index of tailings is lower than that of direct shear fast shear index,and the tailings are opposite.The c value of triaxial test and shear test of tailings is different.(3)the two kinds of tailings under different confining pressures have a higher degree of fitting and better normalization.The dynamic shear modulus decreases with the increase of dynamic shear strain amplitude,and the damping ratio increases with the increase of dynamic shear strain amplitude.
关键词
尾矿/稳定性/力学性质/压缩试验/剪切试验/三轴试验
Key words
tailings/stability/mechanical properties/compression test/shear test/triaxial test
维普
万方数据