| 盆地潜凸起岩溶热储地热田成因机理：以菏泽潜凸起为例 |
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| 引用本文： | 康凤新,史启朋,马哲民,隋海波.盆地潜凸起岩溶热储地热田成因机理：以菏泽潜凸起为例[J].地质学报,2023,97(1):221-237. |
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| 作者姓名： | 康凤新 史启朋 马哲民 隋海波 |
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| 作者单位： | 1) 山东省地质矿产勘查开发局，山东济南，250013;
2) 山东省地热清洁能源探测开发与回灌工程技术研究中心，山东德州，253072；
3) 山东省地下水环境保护与修复工程技术研究中心，山东济南，250014;4) 山东省鲁南地质工程勘察院(山东省地勘局第二地质大队)，山东济宁，272100；
5) 山东省地热清洁能源勘查开发工程研究中心，山东济宁，272100;2) 山东省地热清洁能源探测开发与回灌工程技术研究中心，山东德州，253072；
3) 山东省地下水环境保护与修复工程技术研究中心，山东济南，250014；
6) 山东省地质矿产勘查开发局八○一水文地质工程地质大队，山东济南，250014 |
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| 基金项目： | 本文为国家自然科学基金项目(编号 U1906209、42072331)和山东省中央引导地方科技发展资金项目(编号 YDZX20203700002937)联合资助的成果。 |
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| 摘 要： | 盆地潜凸起岩溶热储地热田是我国主要供暖用热储之一，具有分布面积广、水温高、水量大等特点，是北方清洁供暖的重要可再生热源。本文以菏泽潜凸起岩溶热储地热田为例，通过地质构造、岩溶发育特征、同位素和水文地球化学特征、地温场空间分布规律、地热水动力场的系统分析，揭示地热田岩溶地热水补给源、运移途径和富集机理：地热水来源于东北部梁山、东部嘉祥一带基岩山区大气降水入渗补给，主要循环富集于层间岩溶与断裂破碎带复合处。根据地温场空间分布特征揭示的热源及其传递和聚集特征，提出了四元聚热机制，一元是大地热流毯状传导聚热、二元是凸起区高热导率分流聚热、三元是导热断裂或岩体接触带带状对流聚热、四元是地下水运移传导-对流聚热。在热储富集和聚热成因机理研究基础上，构建了基于水源、热源及深部岩溶发育特征的地热田成因机理模型，揭示了地热能富集规律。
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| 关 键 词： | 菏泽潜凸起地热田 岩溶热储 成因机理 四元聚热 |
| 收稿时间： | 2021/9/4 0:00:00 |
| 修稿时间： | 2021/10/25 0:00:00 |
Genetic mechanism of the karst geothermal reservoir in buried uplifts of basins: A case study of Heze |
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| Kang Fengxin,Shi Qipeng,Ma Zhemin,Sui Haibo.Genetic mechanism of the karst geothermal reservoir in buried uplifts of basins: A case study of Heze[J].Acta Geologica Sinica,2023,97(1):221-237. |
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| Authors: | Kang Fengxin Shi Qipeng Ma Zhemin Sui Haibo |
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| Abstract: | The karst geothermal reservoir in buried uplifts of basins is one of the main reservoirs for space heating in China, which is characterized by wide distribution area, high water temperature and large amount of production. It is an important renewable heat source for clean heating in North China. Taking the karst geothermal field in Heze buried uplift as an example, this paper reveals the recharge source, migration path and enrichment mechanism of karst geothermal water in the geothermal field through systematic analysis of geological structure, karst development characteristics, isotope and hydrogeochemical characteristics, spatial distribution law of geotemperature field and geothermal water dynamic field. The geothermal water comes from the infiltration of atmospheric precipitation in the bedrock mountain area of Liangshan in the northeast and Jiaxiang in the east, and mainly accumulates in the compound of interlayered karst and fault zone. According to the characteristics of heat sources and their transfer and accumulation revealed by the spatial distribution of geo- temperature field, the four- sources heat accumulation mechanism is proposed. The first source is the thermal accumulation of blanket shaped terrestrial heat flow conduction; the second source is the thermal accumulation of the high thermal conductivity diffluence in the uplift area; the third source is the belt shaped convective thermal accumulation in the deep fault zone and the contact zone between the intrusive and soluble rocks; and the fourth source is the conductive and convective thermal accumulation through the deep groundwater circulation. Based on the mechanism of thermal accumulation and geothermal water enrichment, together with the controlling elements such as the water sources, heat sources, and the spatial occurrence of geothermal water enrichment reservoir, the metallogenic mode of the karst reservoirs in the buried uplift geothermal fields of the basins was determined to be weakly open, convective- conductive, belted- layered type. This metallogenic mode reveals the renewable capacity of the hot water sources and their enrichment, the heat sources and their transfer and accumulation, and the spatial occurrence regularity of the reservoirs. |
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| Keywords: | Heze buried uplift geothermal field karst geothermal reservoir genetic mechanism thermal accumulation of four sources |
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