瞬变电磁法在地热资源勘查中的应用——以阿拉山地区为例

The Application of Transient Electromagnetic Method in Geothermal Resource Exploration——Taking the Alashan Area as an Example

【目的】为调查乌苏市深部地热资源分布情况,用地球物理方法对此区域开展物探工作。【方法】本研究运用瞬变电磁法,对乌苏市阿拉山地区进行地热资源勘探,并通过实例对瞬变电磁法在地热资源勘探的应用效果进行验证。【结果】在对瞬变电磁法的5条物探剖面初步解译后,确定勘查区分布有6条断裂,并计算出含水构造的深度与层厚。【结论】物探结果与地质调查及钻探验证结果吻合,证明运用瞬变电磁法确定地热资源分布是一种可靠的物探测量方式,也为该地区的地热资源勘查与开发提供了依据。

[Purposes]To investigate the distribution of deep geothermal resources in Wusu City,geo-physical methods were used to conduct geophysical exploration work in this area.[Methods]This study uses transient electromagnetic method to explore geothermal resources in the Alashan area of Wusu City,and verifies the application effect of transient electromagnetic method in geothermal resource exploration through examples.[Findings]In the preliminary interpretation of 5 geophysical profiles using transient electromagnetic method,it was determined that there are 6 faults distributed in the exploration area,and the depth and layer thickness of water-bearing structures were calculated.[Conclusions]The geophysi-cal results are consistent with the geological survey and drilling verification results,which provides that using transient electromagnetic method to determine the distribution of geothermal resources is a reliable geophysical measurement method,which provides a basis for the calculation and development of geother-mal resources in the region.