Analysis on the curve of resistivity of rock deformation due to loading

Resistivity is one of the important physical parameter of rocks.It plays an important role in analyzing the intrinsic properties and occurrence conditions of rocks.The paper chooses sandstone,limestone,mudstone and granite as representing rocks to analyze the resistivity curve during loading progress.Through the analysis,the critical point of resistivity was found.And the stress ratio of the critical point is 70%~85%,corresponding to the yield...