【摘要】 电阻率是岩石的重要物理参数,对研究岩石的固有特性和赋存状态有着重要的作用。选取砂岩、灰岩、泥岩和花岗岩为代表岩样,进行受荷载条件下的电阻率曲线分析,得到了电阻率的临界点,其电阻率临界点的应力比值范围为70%~85%,对应于岩石应力应变中的屈服点。分析发现,电阻率临界点具有方向性,岩石电阻率临界点可以用于判断岩石的屈服点和应变状态。更多还原

【Abstract】 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 point in rocky strain.And the directivity of critical point was found at the same time.The critical point found from the study can be used to judge yield point and the strain state.更多还原