| 王雷生,杨圣坤,高洪生,赵超,刘志龙,朱怀亮.大地电磁法在松潘—甘孜褶皱区地热资源勘查中的应用研究[J].矿产勘查,2025,16(3):496-504 |
| 大地电磁法在松潘—甘孜褶皱区地热资源勘查中的应用研究 |
| Geothermal resources in Songpan-Ganzi fold area by magnetotelluric application research in exploration |
| 投稿时间：2024-02-21 |
| DOI：10.20008/j.kckc.202503006 |
| 中文关键词: 大地电磁测深 松潘—甘孜褶皱区 二维反演 地热资源 |
| 英文关键词: geodetic electromagnetic sounding Songpan-ganzi Folding Area two-dimensional inversion geo-thermal resources |
| 基金项目:本文受陈塘庄分层监测站重建工程(国土房任[2015]5号)资助。 |
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| 中文摘要: |
| 松潘—甘孜褶皱地区地热资源丰富，但是地热地质研究程度相对较低，存在一定的研究空白，严重制约了地热资源的开发。本文应用大地电磁测深法对松潘甘孜褶皱地层结构和隐伏断裂进行探测研究，布设了 4条东西向和 1条北东向的大地电磁测深剖面，获得 94个测深点。通过对大地电磁测深数据的处理、分析和反演，获得了勘查区内 3000 m以浅的二维电性结构模型。综合区域地质资料，地层由上至下依次划分为第四系(Q)—新近系(N)—古近系(E)、上三叠统图姆沟组(T3t)、上三叠统曲嘎寺组(T3q)。推断了查卡村西断裂(Fa)、查卡村北断裂(Fb)、理塘断裂(Fc)的位置及产状等信息。勘查区热储层为上三叠统曲嘎寺组岩溶裂隙型热储，其有利区域为查卡村西断裂(Fa)、查卡村北断裂(Fb)、理塘断裂(Fc)附近。研究成果可为松潘—甘孜褶皱区的地热资源开发提供依据。 |
| 英文摘要: |
| In this paper, the geodetic electromagnetic sounding method was applied to detect and study the structure of the Songpan-Ganzi fold strata and concealed faults. Four east-west and one northeast-oriented geo-detic electromagnetic sounding profiles were set up, and 94 sounding points were obtained. Through the processing,analysis and inversion of the electromagnetic sounding data of the earth, a two-dimensional electrical structuremodel within 3000 meters in the exploration area was obtained. Based on the comprehensive regional geologicaldata, the strata are successively divided from top to bottom into the Quaternary (Q) -Neogene (N) -Paleogene (E),the Upper Triassic Tumugou Formation (T3t), and the Upper Triassic Qugaosi Formation (T3q). The locations and oc-currence conditions of the West Chaka Village Fault (Fa), North Chaka Village Fault (Fb), and Litang Fault (Fc) wereinferred. It is believed that the thermal reservoir in the exploration area is a karst fissure type thermal reservoir ofthe Upper Triassic Quga Temple Formation, and its favorable areas are near the West Chaka Village Fault (Fa), North Chaka Village Fault (Fb), and Litang Fault (Fc). This article provides a strong basis for the development of geo-thermal resources in the Songpan-Ganzi fold area. |
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