煤炭技术

本研究以汝城热水镇地热系统为研究对象，采用地质调查、钻探测温、水化学分析等多种技术手段，系统分析了该区地热资源的形成机制与分布特征。研究结果表明：该地热系统主要受NE向F₁和NNE向F₃断裂及其伴生裂隙系统控制，具有多热源耦合特征(岩浆余热、放射性生热和断裂摩擦热)；通过钻探测温数据和水化学特征分析，发现地热流体主要来源于大气降水补给，在深部循环加热后，沿断裂系统上升排泄，形成完整的热-水耦合循环系统；花岗岩与变质岩接触带构成良好盖层，断裂破碎带形成优质热储，显示出良好的地热资源开发前景。

This study takes the geothermal system of Rucheng Reshui Town as the research object, and uses various technical approaches including geological survey, drilling temperature detection, and hydrochemical analysis to systematically analyze the formation mechanism and distribution characteristics of geothermal resources in this area. The findings demonstrate that this geothermal system is primarily controlled by NE F₁ and NNE F₃ fault zones along with their associated fracture networks, exhibiting multi-source thermal coupling features(magmatic remnant heat, radiogenic heat, and frictional heating from fault activity). Through drilling temperature data and hydrochemical analysis, it was found that geothermal fluids mainly come from atmospheric precipitation replenishment. And it rises and discharges along the fracture system to form a complete heat-water coupled circulation system after being heated in deep circulation. The contact zone between granite and metamorphic rock forms a good cover layer,while fault fracture zones create high-quality heat storage, indicating promising prospects for geothermal resource development.