土壤氡定量测试方法优化及其在中低温对流型地热系统识别中的应用
Optimization of Soil Radon Quantitative Testing Methods and Its Application in Identification of Medium-Low Temperature Convective Geothermal Systems
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为了指示地热勘察空白区内地热水的分布,经系统试验阐明了土壤氡含量测试结果与采样深度、测量时间、土壤孔隙度、土壤湿度等重要影响因素的关系,确定了最佳的土壤测试条件,优化了传统土壤氡测量方法.在此基础上,选择山西忻州盆地内的地热勘查空白区为典型研究区,基于优化后的土壤氡测量方法识别了区内控制地热水升流的主要导水断裂,并辅以浅层地下水温测量及其水文地球化学研究,查明了区内水热型地热的分布规律.研究成果有望推广应用于受断裂控制的中低温对流型地热系统的勘查实践.
Soil radon measurement is one of the important geochemical exploration methods to investigate concealed fracture, and also an effective means to identify hydrothermal geothermal systems. In this paper it clarified the relationship between the test results of soil radon content and sampling depth, measurement time, soil porosity, soil humidity and optimizes the traditional soil radon measurement method. On this basis, choose the geothermal exploration in Shanxi Xinzhou Basin as a typical research area, based on the optimization of soil radon measurement method to identify the control of geothermal water flow main water fracture, supplemented by shallow groundwater temperature measurement and hydrogeochemical research, find out the distribution of hydrothermal geothermal type in the area. The results of this study are expected to be applied to the exploration practice of medium-low temperature convective geothermal system controlled by fracture.
土壤氡 / 氡异常 / 中低温对流型地热系统 / 地热勘查 / 忻州盆地 / 水文地质学.
soil radon / radon anomaly / low-medium temperature geothermal system of convective type / geothermal exploration / Xinzhou Basin / hydrogeology
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山西省原平市委托项目(2019045108)
山西省原平市委托项目(2021046079)
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