对勘查区多种地貌单元布设10条测线,采用化探法测量壤中氡气、气汞含量.通过分析壤中氡气、气汞平均含量在不同地貌中的分布特征,验证实测数据的可靠性.基于土壤氡气和气汞含量对断裂构造反应的敏感性,分别对壤中氡气、气汞异常曲线的形态和异常值做对比分析,推测勘查区内存在F1至R6条近EW向的断裂,并判断出活动断裂在勘查区的位置,基本查明区内断裂分布情况.因此,壤中气化探测量法可作为寻找与断裂构造关系密切的地热田的辅助方法.%Radon and gas mercury contents was measured by geochemical exploration after ten survey lines layout in all sorts of landform units of exploration area.Through analysis of distribution characteristics of average contents of radon and gas mercury in soil,the reliability of the measured data is verified.Based on the fact that radon and gas mercury contents are sensitive to fracture structures,detailed compare and analysis have been done for the abnormal curves shape and abnormal values of radon and gas mercury in soil.There are six nearly east-west faults speculated among from F 1 to F6.The location of the active faults in the exploration area was determined,and the distribution of the faults in the area was basically identified.It is suggested that the soil gas methods using geochemical exploration are regarded as helper methods to detect geothermal field which has close relationship with the fracture structure.
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