江西省通天寨地区地热水资源赋存规律研究
2021-04-29戴云龙赵兰芝
戴云龙 赵兰芝

摘 要:石城县一带赋存较为丰富的地热水资源。石城—寻乌断裂带是通天寨地区的主断裂带,为活性断层,规模大,分布广。断裂有沟通深部热源的作用,是形成石城通天寨地热水资源的根本条件。通天寨地热水赋存规[z1] 律受地形地貌、大气降水、地层岩性和地质构造的影响,其中主要受地质构造的影响。地热水的形成机制为地表水沿断裂中的裂隙和孔隙入渗到地球深部,经过热流增温和吸收岩石的热量,沿着断裂裂隙和岩石孔隙上升,最终储存在热储层中形成地热水。
关键词:地热水 通天寨 赋存规律 成热条件
Regularity of Geothermal Water Resources in Tongtianzhai Area, Jiangxi Province
DAI Yunlong1ZHAO Lanzhi2
(1. College of Hydraulic and Ecological Engineering, Nanchang Institute of Technology College, Nanchang, Jiangxi Province, 330099 China; 2. China Railway Water Conservancy & Hydropower Planning and Design Group Co., Ltd., Nanchang, Jiangxi Province, 330029 China)
Abstract: Shicheng County area has abundant geothermal water. Shicheng-Xunwu fault, a large scale and widely distributed active fault, is the main fault of the study area. Communication between faults and the deep heat is the fundamental forming conditions of the Tongtianzhai geothermal water. Regularity of geothermal water resources are affected by topography, rainfall, lithology and geological structure. Geological structure is the main controlling factor. The mechanism of geothermal water is surface water along the fault in the cracks and pores infiltrating into the deep earth. By heat flux and heat absorption from rocks, along fractures and pores of the rocks, heat geothermal water ultimately formed in storage reservoir.
Key Words:Geothermal water; Tongtianzhai area; Regularity; Geothermal conditions
地下熱水作为高节能能源,它具有较高的开发利用价值以及经济价值[1],并且在某些方面地热能具备太阳能、风能和潮汐能所不具备的特性,例如分布范围广和受季节变化影响小等[2-3]。地下水资源可以直接利用且不会污染环境[4]。本文在前人研究的基础上,对通天寨周围的断裂分布特征和地质条件进行了分析,总结出石城县通天寨地热资源的地热特征、地热赋存规律和地热成因机制等。研究成果不但可以丰富该区地热水资源理论研究,而且具有实际应用意义。
1区域地理与地质概况
1.1 区域气象水文及地形地貌条件
研究区所在石城县处于亚热带季风湿润气候区,气候温和湿润,同时具有春季和夏季降雨充沛的特点。根据资料显示,石城县日平均日照时长为5.3h,全年平均温度为15.3~19.0℃。无霜期较长,全年无霜期为246~283d。……
