| 重庆市主城岩溶区地热资源可再生性评价 |
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| 引用本文： | 杨华林,李明伦,周神波,杨 森.重庆市主城岩溶区地热资源可再生性评价[J].中国岩溶,2014,33(2):167-175. |
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| 作者姓名： | 杨华林 李明伦 周神波 杨 森 |
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| 作者单位： | 重庆市地质矿产勘查开发局南江水文地质工程地质队;重庆市地质矿产勘查开发局南江水文地质工程地质队;重庆市地质矿产勘查开发局南江水文地质工程地质队;重庆市地质矿产勘查开发局南江水文地质工程地质队 |
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| 基金项目： | 重庆市都市经济圈地热水资源可再生性研究〔渝国土房管科字（2008第14号）〕 |
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| 摘 要： | 重庆主城岩溶区的地热资源主要分布在5大背斜的层状热储构造中,地热田主要分布在背斜两翼和背斜南（或北）倾没端。热储层为三叠系嘉陵江组灰岩,盏层为须家河和侏罗系地层,下部隔热层为三叠系飞仙关组泥灰岩地层。随着地热经济的发展和工程建设的加大,重庆市地热水资源可再生性受到影响。本文基于重庆市多年的地热资源勘查、监测资料,将主城岩溶区5个背斜的地热资源分为温泉出露和背斜翼部中深埋藏两类,并利用综合指数法对主城岩溶区地热资源的可再生性进行分区评价。结果显示,主城岩溶区地热资源属强可再生性的有5个,较强的有10个,中等和弱的分别为8和7个,其分布面积所占比例分别为12.95%、32.2%、32.15%和22.7%,可再生性总体呈较强-中等;其中温泉出露型的资源可再生性以较强和中等为主,分布面积分别占温泉出露区总面积的33.6%和33.95%;中深埋藏型以较强和强可再生性为主,其分布面积分别占中深埋藏区总面积的25.9%和30.8%。较强和强可再生性地热主要位于背斜北段,中等-弱可再生性地热则分布于背斜中段和南段。中深埋藏型地热资源的可再生性总体较温泉出露型的强。由此,建议加强背斜两翼中深埋藏区北段地热水资源的勘查开发力度,同时控制中-弱可再生性地热资源区,包括背斜两翼中深埋藏区中南段和部分温泉出露区的开采规模,以确保地热资源的可持续利用。
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| 关 键 词： | 岩溶区 地热资源 背斜 可再生性 评价 重庆 |
| 收稿时间： | 2013/6/12 0:00:00 |
Renewable assessment for geothermal resources in the karst area of Chongqing City |
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| YANG Hua-lin,LI Ming-lun,ZHOU Shen-bo and YANG Sen.Renewable assessment for geothermal resources in the karst area of Chongqing City[J].Carsologica Sinica,2014,33(2):167-175. |
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| Authors: | YANG Hua-lin LI Ming-lun ZHOU Shen-bo and YANG Sen |
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| Institution: | Nanjiang Hydrogeological and Engineering Geology Team, Chongqing Bureau of Geology and Minerals Exploration;Nanjiang Hydrogeological and Engineering Geology Team, Chongqing Bureau of Geology and Minerals Exploration;Nanjiang Hydrogeological and Engineering Geology Team, Chongqing Bureau of Geology and Minerals Exploration;Nanjiang Hydrogeological and Engineering Geology Team, Chongqing Bureau of Geology and Minerals Exploration |
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| Abstract: | The geothermal resources of the main city of Chongqing karst area are mainly located in the layered heat storage structure of five anticlines.The geothermal fields are mainly in the limbs and south or north plunging ends of the anticlines.The Triassic Jialingjiang limestone is a heat reservoir,with overlying Xujiahe Formation and Jurassic strata,and with the marl of the Triassic Feixianguan Formation serving as the lower heat insulation layer.With increasing geothermal economic development and engineering construction,Chongqing City geothermal water resources renewability has been affected.In this paper,based on years of geothermal resource exploration and monitoring in Chongqing City,the five anticline reservoir structures in the karst area were divided into spring outcrops and deeply buried anticline,zones and the renewability of the geothermal resources was evaluated using the comprehensive index method.The results show that,the geothermal resources in the karst area can be classified as：5 strong renewable,10 moderately-strong,8 moderate and 7 weak,comprising 12.95%,32.2%,32.15%and 22.7%by area,respectively,and shows a moderately-strong to moderate renewability overall.Moderately-strong and moderate renewable spring-type geothermal resources account for 33.6%and 33.95%,respectively,by area.Strong and moderately-strong renewable deeply buried resources account for 25.9%and 30.8%by area.Strong to moderately-strong renewable geothermal resources are mainly located in the northern anticline,moderate to weak renewable geothermal resources are found in the middle and southern anticlines.In general,deeply buried geothermal resources are more strongly renewable than spring-type resources.Therefore,this article suggests strengthening the exploration and development of geothermal water resources in the deeply buried area of the northern anticline limbs.At the same time,in order to ensure the sustainable utilization of geothermal resources,the scale of mining should be controlled in the moderate to weak renewable geoth |
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| Keywords: | karst area geothermal resources anticline renewable evaluate Chongqing |
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