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将两种规格的长方体水饱和花岗岩标本，以标本一个面的中心点为中心，对称布置成互成４５°角的４条对称四极法电阻率测线。标本电极面和相邻面的一小部分用防水环氧胶密封，使标本在装有水的承压水箱中，沿标本长轴方向受压，观测标本视电阻率随压力的变化。实验结果为：（１）有补给水实验与无补给水实验，电阻率变化整体形态相似，即电阻率随压力的变化先上升，后下降，但有补给水实验的电阻率下降幅度要大一些。（２）电阻率变化出现明显的方向性，可以用电阻率变化最大的各向异性主轴方向表示；实验中，用４条测线、４种组合（每３条测线组合可以确定１个视电阻率变化各向异性主轴方向）方法确定的４个电阻率变化各向异性主轴方向基本一致。（３）加压期间，电阻率各向异性主轴方向随压力增加发生变化，这种变化不是渐变和乱变，而是有规律的跃变，即整个实验过程，多数标本只跃变１—３次，每次跃变形成一个主方向，在主方向内，角度变化不大。（４）有补给水岩石电阻率变化整体形态与美国Ｂｒａｃｅ等（１９６８）所作的围压和孔隙压的岩石电阻率变化形态相似。
The two kinds of cuboid water saturated granite specimens of two specifications are symmetrically arranged to form four symmetrical quadrupole resistivity lines at an angle of 45 ° with the central point of one surface of the specimen as the center. A small part of the specimen electrode surface and the adjacent surface is sealed with a waterproof epoxy so that the specimen is pressed in the pressure-bearing water tank filled with water and pressed along the long axis of the specimen to observe the change of the apparent resistivity as a function of pressure. The experimental results are as follows: (1) With the experiment of water supply and the experiment of no water supply, the overall change of resistivity is similar, that is to say, the resistivity changes first and then decreases with the change of pressure, but the drop of resistivity of feed water experiment is larger . (2) The change of resistivity shows obvious directivity, which can be expressed by the direction of major anisotropy with the largest change of resistivity. In the experiment, 4 lines and 4 combinations Resistivity change anisotropic principal axis direction) method to determine the four resistivity changes in the direction of the principal axis of anisotropy is basically the same. (3) During the compression, the anisotropy of anisotropy of resistivity changes with the increase of pressure in the direction of the main axis. This change is not a gradual change but a regular change. That is to say, during the whole experiment, most specimens only change 1-3 Times, each jump to form a main direction, in the main direction, the angle changed little. (4) The overall shape of rock resistivity change with recharge water is similar to the change of rock resistivity of confining pressure and pore pressure by Brace et al. (1968).