| 蒋飞军,卿国屏,杨超,徐晓亮,卿艳彬,杜江.麻阳盆地隆家堡地热地质特征及开发利用建议[J].矿产勘查,2026,17(7):1190-1200 |
| 麻阳盆地隆家堡地热地质特征及开发利用建议 |
| Geothermal geological characteristics and development suggestions of the Longjiabao Area in the Mayang Basin |
| 投稿时间：2025-11-12 |
| DOI：10.20008/j.kckc.202607006 |
| 中文关键词: 隆家堡 地热水 成因 开发利用 |
| 英文关键词: Longjiabao geothermal water genesis development |
| 基金项目:本文受湖南省重点研发计划项目(2022SK2070)、湖南省地质院重点科技项目(HNGSTP202211)和湖南省自然资源厅科技项目(湘自资科20240126DZ)联合资助。 |
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| 中文摘要: |
| 麻阳盆地位于湖南省西部麻阳县一带，具有良好的沉积盆地型地热资源。本文以隆家堡地热水为研究对象，探讨了地热水的水化学特征、同位素特征、热储温度、循环特征及成因，并在水质评价的基础上提出了开发利用建议。研究结果表明，隆家堡地热水属 HCO3-Na型，水温 43 ℃，含 F、偏硅酸等微量组分；通过同位素(δD、δ18O、14C、87Sr/86Sr、13C)特征分析，揭示地热水补给源为大气降水，主要热储为南华系富禄组，滞留时间(37.61±2.12)ka，水中碳主要来源于沉积有机质。玉髓温标估算热储温度 60~68 ℃，地热水循环深度 1781~2165 m。综合区域地热地质特征和本文研究成果，总结分析了隆家堡地热水成因。该地热水水质稳定、温度适中，具备优质的温泉开发价值，建议在地热资源开发过程中，加强资源环境保护。研究成果对推动麻阳盆地地热系统研究与开发利用具有重要意义。 |
| 英文摘要: |
| The Mayang Basin is located in the Mayang County area of western Hunan Province and possessesfavorable sedimentary basin-type geothermal resources. This paper takes the Longjiabao geothermal water as the re-search object, investigating its hydrochemical characteristics, isotopic signatures, reservoir temperature, circulation patterns, and genesis. Based on water quality assessment, recommendations for development and utilization are pro-posed. The results indicate that the Longjiabao geothermal water is of the HCO3-Na, with a temperature of 43 ℃ andcontaining trace components such as fluoride and metasilicic acid. Isotopic analysis (δD, δ18O, 14C, 87Sr/86Sr, 13C) re-veals that the geothermal water is recharged by atmospheric precipitation, with the main reservoir being the NanhuaFulu Formation. The residence time is (37.61±2.12) ka, and the carbon in the water primarily originates from sedi-mentary organic matter. The chalcedony geothermometer estimates a reservoir temperature of 60-68 ℃, and the cir-culation depth of the geothermal water is 1781-2165 m. Integrating regional geothermal geological characteristicswith the findings of this study, the genesis of the Longjiabao geothermal water is summarized and analyzed. The geo-thermal water exhibits stable quality and moderate temperature, demonstrating excellent potential for hot spring de-velopment. It is recommended to strengthen environmental protection of resources during geothermal exploitation.The research outcomes hold significant importance for advancing the study and utilization of the geothermal systemin the Mayang Basin. |
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