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中文摘要：
利用氡气测量的方法标定断裂（裂隙）构造及其开启程度,并反应断裂（裂隙）的水文地质特征是一种有效而且快速的方法.选取小鱼洞活动断裂三个试段进行了氡气（RaA）测量,并利用统计方法对测量数据进行分析,确定研究区氡气的背景值和异常值.根据氡气异常等级对小鱼洞活动断裂开启性进行了划分,并对其水文地质意义进行了讨论.在基岩裂隙地区可用氡气测量技术圈定蓄水构造,从而确定找水的有利孔位.
英文摘要：
Radon measurement, which is used to demarcate the fault （or fracture） and its opening degree, and to evaluate its hy- drogeological characteristics, is an effective and quick way. RnA （daughter of Rn） concentrations were measured at three test sec- tions in Xiaoyudong active fault. On the basis of a statistical analysis of the acquired radiometric data, background value and ab- normal value of Rn gas were determined. The active fault was classified into different openings, and its hydrogeological meaning was discussed. This work can be used to delineate the location of groundwater resources in fractured-rock aquifers and to select the borehole sites for water supply purposes.
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