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采用6种不同风化程度的花岗岩试样,在相同围压下进行了不同加载速率(1～105 MPa/s)的动三轴压缩实验。研究发现,不同风化程度花岗岩试件的抗压强度、弹性模量均随加载速率的增加而增加,泊松比随加载速率的增加而减小。抗压强度的增加幅度随风化程度的增加而增加,弹性模量的增加幅度基本保持不变。
Six kinds of granite samples with different weathering degree were used to carry out dynamic triaxial compression tests with different loading rates (1 ~ 105 MPa / s) under the same confining pressure. The results show that the compressive strength and elastic modulus of granite specimens with different degrees of weathering increase with the increase of loading rate, and the Poisson’s ratio decreases with the increase of loading rate. The increase of compressive strength increases with the degree of weathering, and the increase of elastic modulus basically remains unchanged.