强降雨对郯庐断裂带宿迁段断层土壤气Rn浓度观测的影响  

Effect of heavy rainfall on Rn concentration observation in the Suqian segment of Tanlu fault zone

作　　者：单友磊 于航 翟红英 SHAN Youlei;YU Hang;ZHAI Hongying(Suqian Earthquake Service Center(Municipal Emergency Technical Service Center),Jiangsu Province 223800,China;Sihong County Emergency Services Support Center,Jiangsu Province 223900,China)

机构地区：[1]宿迁市地震服务中心(市应急技术服务中心),江苏223800 [2]泗洪县应急服务保障中心,江苏223900

出　　处：《地震地磁观测与研究》2024年第3期113-121,共9页Seismological and Geomagnetic Observation and Research

基　　金：宿迁市防震减灾“十三五”发展规划课题研究(项目编号:宿政办发[2017]64号);宿迁市市级指导性科技计划项目(项目编号:Z2022115)。

摘　　要：为了捕捉构造区域内应力场变化和地震地球物理异常,“十三五”期间,宿迁市辖区沿郯庐断裂带规划建设10个断层土壤气观测站,用于监测郯庐断裂带宿迁段断层土壤气,如Rn、H_(2)和CO_(2)的逸出浓度。通过近2年的连续观测,发现强降雨对仪器计数和台站运维造成较大影响,尤其是气氡观测,降雨影响显著。分析认为,我国中西部(干旱少雨)断层土壤气观测集气坑设计施工方案,在郯庐断裂带宿迁段土壤气监测中并不适用,需充分考虑我国东南部地区地下水埋深浅和季节性强降雨等因素,对集气设施和观测装置进行设计和改进,以满足当地断层土壤气Rn的连续观测的技术要求。During the 13th Five-Year plan period,10 fault soil gas stations were planned and built along the Tanlu fault zone in Suqian city to capture the variation of stress field and the anomaly of seismic geophysics in the tectonic region,which areused to monitor the exhalation concentration of soil gas such as Rn,H_(2) and CO_(2) in Suqian segment of Tanlu fault zone.Through continuous observation in recent two years,it is found that heavy rainfall has a great influence on instrument counting and station operation,especially gas radon observation.It is considered that the design and construction scheme of the soil gas observation and collection pit of the middle-west(arid and less rainy)fault in our country is not applicable to the soil gas monitoring of Suqian section of the Tanlu fault zone.Therefore it is necessary to design and improve gas-collecting facilities and observation devices in the southeast of our country,taking into full account such factors as the groundwater depth and seasonal heavy rainfall,etc.,in order to meet the technical requirements of the continuous observation of the local fault soil gas Rn.

关 键 词：强降雨 地下水 断层土壤氡 干扰影响 

分 类 号：P315.7[天文地球—地震学]