| 任静,申鹏凯,王广华,石兰君,孟冲.河南通许凸起(通许段)岩溶热储特征及开发利用潜力评价[J].矿产勘查,2023,14(2):190-203 |
| 河南通许凸起(通许段)岩溶热储特征及开发利用潜力评价 |
| Study on Karst geothermal resources in middle part of the Tongxu uplift (Tongxu section) in Henan Province |
| 投稿时间：2022-02-08 |
| DOI：10.20008/j.kckc.202302004 |
| 中文关键词: 地热 岩溶 热储特征 通许凸起 开发利用潜力 通许 河南 |
| 英文关键词: geothermal karst geophysical prospecting drilling heat storage distribution Tongxu Henan Province |
| 基金项目:本文受河南省2019年度财政地质勘查项目(2019(22))资助。 |
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| 中文摘要: |
| 通许凸起地热资源丰富且埋藏较浅利于开采,已经成为当地冬季主要的洗浴、取暖用热源。目前,孔隙地热资源已进行了充分勘查与研究,而针对下部岩溶热储的赋存规律、分布特征和资源潜力的系统性研究相对薄弱,在一定程度上制约了通许地区的地热资源的综合性开发和利用。本文以河南省通许凸起区域地质构造条件为基础,结合地球物理勘探、地热钻探成果,分析通许凸起中部(通许段)下古生界岩溶热储地热类型、热储结构、岩性厚度以及空间分布特征,评价了下古生界岩溶地热流体质量,评价了研究区内下古生界岩溶热储开发利用潜力。研究认为通许凸起中部地区下古生界岩溶热储表现出以传导型为主低温地热田特征,热源供给主要为大地热流传导方式。中奥陶统马家沟组岩溶发育好于寒武系,地热水化学类型为Cl-Na型,研究区3000 m深度下古生界岩溶热储可采热能9.94×1010 J。NE向F1断裂以东是岩溶热储发育,有较大开发利用潜力区段,该区段下古生界岩溶热储可采热能约为7.51×1010 J,占全区可采热能的75%,该区段城镇人口密集、地热需求量大。研究成果对未来推进城镇地热供暖具有一定理论参考意义。 |
| 英文摘要: |
| Based on the regional geological structural conditions of Tongxu uplift in Henan Province, combined with the results of geophysical exploration and geothermal drilling, analysis of Tongxu bulge in the middle (Tongxu section) the geothermal type,structure, lithologic thickness and spatial distribution characteristics of the Lower Paleozoic karst heat reservoir, the quality of the lower Paleozoic karst geothermal fluid is evaluated, the genetic model of the geothermal field is established, and the development and utilization potential of the Lower Paleozoic karst heat reservoir in the study area is evaluated. The reserch suggests that the Lower Paleozoic karst heat reservoir in the central area of Tongxu uplift is mainly conductive low-temperature geothermal. According to the field characteristics, the heat source supply is mainly the earth heat flow conduction mode. The karst development of Majiagou Formation in Middle Ordovician is better than that in Cambrian, and the water quality type of geothermal water is Cl-Na type; The recoverable thermal energy of Lower Paleozoic karst thermal reservoir at the depth of 3000 m in the study area is 9.94×1010 J.To the east of NE-trending F1 fault is a potential section for the enrichment of karst thermal reservoir. The recoverable thermal energy of Lower Paleozoic karst thermal reservoir in this section is about 7.51×1010 J, accounting for 75% of the recoverable heat energy in the whole region. The urban population in this section is dense and the geothermal demand is large, which has certain theoretical reference significance to promote urban geothermal heating in the future. |
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