中梯装置下引起的激电负异常及其应对措施

THE IP NEGATIVE ANOMALY CAUSED BY INTERMEDIATE GRADIENT EQUIPMENT AND THE COUNTERMEASURE

在激电法物探工作中,时常因观测误差、电磁耦合效应及特定的地电条件等,会出现电性参数视极化率为负值的情况,笔者在前人研究的基础上,结合自身的工作经厉,对引起激电法物探中出现的激电负异常原因及其应对措施进行了总结,从而能在野外工作中第一时间正确认识激电负异常的问题。

In IP geophysical exploration,the electric parameter apparent polarization ratio is often negative because of observation error,electromagnetic couplingeffects and certain geoelectric conditions,etc. On the basis of the previous study and in combination with our experience,we have the sum- up of the origin of negative anomaly and the countermeasure in IP geophysical exploration in oreder to understand correctly IP negative anomaly rapidly in the field work.