选用不同风化程度的砂岩试件为研究对象,对其单轴、三轴力学强度进行了试验研究。结果表明,随着风化程度的增加,砂岩的力学强度逐渐降低;三轴曲线的主应力差对砂岩强度的影响基本呈线性;不同风化程度的砂岩试件的内摩擦角随着风化程度的增加逐渐增大;粘聚力则随着风化程度的增加而减小。 Sandstone samples with different degrees of weathering were chosen as the research object, and their uniaxial and triaxial mechanical strengths were tested. The results show that with the increase of weathering degree, the mechanical strength of sandstone decreases gradually; the influence of main stress difference of triaxial curve on sandstone strength is basically linear; the internal friction angle of sandstone specimens with different weathering degree increases with the degree of weathering Gradually increased; cohesion decreases with the degree of weathering increases.