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该文通过实例,介绍了CSAMT方法的原理、装置布置和数据处理。首先根据探测区域的地质资料和地形设计最佳观测方案;在保证接收信号足够强的情况下,根据测区实际地形情况适当调整收发距,使观测点处于远区;在数据处理过程中为克服静态效应的影响,引入了7点数字滤波器;针对高山区地形影响较大的不利条件,先做简单的地形校正预处理,再进行反演。反演后的结果与实际地质情况符合较好,说明了该方法在山区进行探测的有效性。
The paper introduces the principle, device arrangement and data processing of CSAMT method through examples. Firstly, the best observation plan is designed according to the geological data and the terrain of the detection area. When the received signal is strong enough, the receiving and dispatching distances are adjusted according to the actual terrain of the survey area so that the observation points are located far away. In the process of data processing, Static effect, the introduction of a 7-point digital filter; for the high mountain topography adverse conditions, do a simple topographic correction pretreatment, and then inverted. The retrieved results are in good agreement with the actual geological conditions, indicating the validity of this method in mountainous areas.