综合物探方法在深部地热勘查中的应用

Application of integrated geophysical techniques in the geothermal exploration

应用音频大地电磁测深查明地热资源的深部热储构造关系,结合大功率激发极化剖面,划定深部地热资源延伸至近地表(300m以内)的破碎通道,最终指导工程钻探的布置。本文简单介绍了两种方法的工作原理、特点。实践表明,联合两种方法,既保证了深部地热勘探的效果,又降低成本,在深部地热田勘探工作中具有重要意义。

Audio-frequency magnetotellurieal method could find out the deep geothermal tectonic structure of the heat reservoir. Combining with the high-power induced polarization section, the fault zones within 300m from deep geothermal resources to shallow surface could be determined, finally, the drilling arrangement could be proposed. The working principles and characteristics of the two methods are described in the article. The practice proves that the combination of the two methods not only could ensure the exploration effect, but also lower the cost. It has great sign＇ificance in exploration of deep geothermal works.