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为实现张量可控源音频大地电磁法(TCSAMT)测量,需要有多个水平电偶极子的发射场源.由于发射电偶极子的个数与工作效率直接相关,为了兼顾工作效率,所以在张量可控源音频大地电磁法实际测量工作中,一般采用两个交替发射的电偶极子作为发射场源进行数据采集工作.但是,两个电偶极子如何构成?是正交结构,还是任意交角结构?本文通过已知矿区的两个电偶极子不同交角的发射场源试验研究,给出不同结构的发射场源下的观测结果.研究结果表明:对于一定走向的地质体,应将一个电偶极子布置在地质体的走向方向上,另一个电偶极子布置在地质体的倾向方向上,使激发场源与待探测的目标地质体达到最佳有效耦合,其观测结果反映了最佳的地质找矿效果.发射场源设计研究结果表明,对于采用一对电偶极子的发射场源,张量CSAMT法在数据采集工作之前应当根据地质条件和待测的目标体进行发射场源的设计.
In order to realize the TCSAMT measurement, several horizontal electric dipole emission sources are needed.Because the number of transmitting dipoles is directly related to the working efficiency, in order to balance the work efficiency, Therefore, in the actual measurement of TMAGM, two alternately transmitted electric dipoles are used as the data source for the acquisition of the data source. However, how are the two electric dipoles formed? Structure, or any intersection structure? In this paper, the experimental results of the emission field sources of two electric dipoles with different angles of intersection in the known mining area are given, and the observation results under different field emission sources are given.The results show that for a certain direction of geology One electric dipole should be arranged in the direction of the direction of the geologic body and the other electric dipole should be arranged in the direction of the geologic body so that the excitation field source and the target geologic body to be probed achieve the best and effective coupling, The observation results reflect the best geological prospecting results.The results of the design of launch site sources show that for a launch site source using a pair of electric dipoles, the tensor CSAMT method should be based on the geological And the target body member designed to be measured launch source.