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利用高精度μCT225KVFCB显微CT试验系统和JL型微机控制电液伺服万能试验机,对钙芒硝单轴压缩力学特性进行了研究。研究表明:钙芒硝压密阶段不明显,且存在刚性阶段;钙芒硝单轴抗压强度平均为7.54 MPa,属于软岩,其单轴抗压强度随着物质密度的增大而增大,随物质密度不均匀程度增大而减小,且与X射线衰减系数、衰减系数方差呈线性拟合关系。
The uniaxial compressive mechanical properties of glauber’s salt were studied by using the high-precision μCT225KVFCB micro-CT test system and the JL microcomputer-controlled electro-hydraulic servo universal testing machine. The results show that the phase of glauberite is not obvious and there is a rigid phase. The uniaxial compressive strength of glauber’s salt is 7.54 MPa, which belongs to soft rock. The uniaxial compressive strength increases with the increase of material density The degree of non-uniformity of material density increases and decreases, and it is linearly fitted to the X-ray attenuation coefficient and attenuation coefficient variance.