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前言在用中间梯度装置作激发极化测量时,两供电电极的位置固定不动,其极距与所要探寻的矿体的埋深和大小相比是很大的.在测量过程中由于激发矿体的电场保持不变,用移动的供电电极装置时所存在的电位变化影响可以消除.在这种情况下与地磁场中磁性体的情况类似,可以用基本的位场理论来研究.因两测量电极相距很近,所测电位近于水平面内的电位梯度.用中梯装置测得的
INTRODUCTION In the case of using an intermediate gradient device for excitation polarization measurement, the positions of the two power supply electrodes are fixed and their pole pitch is very large in comparison with the depth and size of the ore body to be explored. During the measurement process, The electric field of the body remains unchanged and can be eliminated by the effect of the change of potential when the power supply electrode device is moved. In this case, similar to the case of a magnetic body in a geomagnetic field, the basic field theory can be used to study The measuring electrodes are very close and the measured potential is close to the potential gradient in the horizontal plane.