在郯庐断裂带安徽段由北向南分别于泗县、明光、肥东、桐城布设了4个测区，每个测区各布设了4条跨断层土壤气测量剖面，测量土壤气Rn、Hg和CO₂的浓度。根据16条跨断层土壤气剖面的测量结果，对郯庐断裂带安徽段的3种土壤气体的释放特征及其与断层空间位置间的关系进行了初步分析。结果表明，气体在断裂带附近较为富集，对断层位置有一定指示作用；气体的富集程度与断裂的活动性、该区段断层岩性及地质环境有一定关系。该结果对于认识测量区域气体的积累特征及构造地球化学研究有一定意义。

In this paper,the concentration of soil gas Hg,Rn,CO₂ were surveyed at four sites(Sixian,Mingguang,Feidong,and Tongcheng)in the Anhui section of Tan-Lu(Tancheng-Lujiang)fault zone. The relationship of soil gas geochemical characteristics and the fault location is investigated on the basis of fault gas measurements. The result shows that a large number of gas concentrated near the fault zone and can be used as the best index to the fault location. The gas enrichment degree can be related to the activity of the fault,the lithology and the geological environment in this section. The results have some significance for the research on gas accumulation characteristics and structural geochemical research in the future.

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地震科技星火计划项目（XH13010），2015年安徽省公益性地质工作项目（2015-g-25）和中国地震局公益科研专项（201308012）共同资助