| MT在天津地热勘查中的应用及主要成果 |
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| 引用本文： | 黎雪梅,聂瑞平,王连成. MT在天津地热勘查中的应用及主要成果[J]. 华北地质, 2010, 33(1): 76-80 |
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| 作者姓名： | 黎雪梅 聂瑞平 王连成 |
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| 作者单位： | 1. 天津地热勘查开发设计院,天津,300250
2. 天津市地质基础工程公司,天津,300191 |
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| 基金项目： | 矿产资源补偿费地热项目 |
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| 摘 要： | 利用大地电磁测深法(MT)反映地质体的电性差异,可以确定具有不同电性特征的地质体的空间展布。近十年来,天津在多个地热资源勘查项目中,利用MT方法确定断裂、地层并尝试圈定地热远景区,取得了一定效果。本文通过不同构造单元的MT成果,分析了这一方法在地热勘查中的适用性,从而得出:对于深大断裂、尤其是坳陷与隆起区的分界断裂在MT上有较明晰的显示;对上、下层电阻率相差较大、且分布较为稳定的地层,MT确定的地层界面较为准确;以剩余电阻率等值线圈定的地热异常区与盖层平均地热梯度等值线圈定的地热异常区相吻合的区域,通常具有比周边地区更好的地热资源条件。
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| 关 键 词： | 地热资源 大地电磁 电阻率异常 地热远景区 电性差异 |
Application Effects of Magnetotellurics Sounding for Explorating Geothermal Resource in Tianjin |
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| LI Xue-mei,NIE Rui-ping,WANG Lian-cheng. Application Effects of Magnetotellurics Sounding for Explorating Geothermal Resource in Tianjin[J]. Geological Survey and Research, 2010, 33(1): 76-80 |
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| Authors: | LI Xue-mei NIE Rui-ping WANG Lian-cheng |
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| Affiliation: | LI+Xue-mei1,NIE+Rui-ping2,WANG+Lian-cheng1(1.Tianjin+Institute+of+Geothermal+Exploration+,+Development+Design,Tianjin+3002502.Tianjin+Geological+Foundation+Engineering+Company,Tianjin+300191) |
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| Abstract: | Taking the data of Magnetotelluric sounding(MT) to reflect geological bodies' electrical property contrast can confirm the spatial distribution of geological bodies that have different electrical property.For the resent decade,MT was used to confirm faults,stratum and geothermal prospective area in a few of geothermal exploration projects in Tianjin area,and obtained certain results.According to this MT achievements of different tectonic units,the paper analyse MT's applicability in geothermal exploration a... |
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| Keywords: | geothermal resource magnetotellurics resistivity anomaly geothermal resource area electric property contrast |
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