利用四极法进行了泥岩、灰岩和砂岩破坏过程中的电阻率变化特性测试。试验表明,岩石的孔隙特征和含水量状况是影响电阻率变化的关键因素。在压密阶段,当试样含水量较少,偏干燥时电阻率变化幅度一般不大;在弹性-稳定破裂阶段,电阻率整体上呈现为较平稳的状况;在屈服阶段,岩石电阻率在屈服点附近电阻率值存在陡变现象,且该现象与岩石的裂隙发展及扩容现象密切相关。 The quadrupole method was used to test the change of resistivity in mudstone, limestone and sandstone. Experiments show that the rock pore characteristics and water content is the key factor affecting the resistivity changes. In the compaction stage, the resistivity change range is generally not big when the specimen has less water content and dryness. In the elastic-stable rupture stage, the resistivity shows a smoother condition as a whole. During the yielding stage, There is a sudden change of resistivity near the yield point, and this phenomenon is closely related to the development and expansion of rock fissures.