怀4井水氡年变动态改变机理分析  

Analysis on the Mechanism of Annual Variation of Radon in Huai-4 Well

作　　者：丁志华[1] 张素欣[1] 盛艳蕊[1] 张子广[1] Ding Zhi-hua;Zhang Su-xin;Sheng Yan-rui;Zhang Zi-guang(Hebei Earthquake Agency,Shijiazhuang,Hebei 050021,China)

机构地区：[1]河北省地震局,河北石家庄050021

出　　处：《山西地震》2020年第1期30-32,共3页Earthquake Research in Shanxi

基　　金：河北省地震科技星火计划项目(DZ20140714049、DZ20160406028);震情跟踪定向工作任务(2016020307)资助。

摘　　要：怀4井水氡动态变化特征在2012年后发生改变。2012年之前,存在冬高夏低的年变形态,之后变为冬低夏高。通过分析怀4井2012年前后的渗流特征,认为2012年之前水氡变化主要是怀3与怀4两口井不同含氡水混合机理,2012年之后,热田区的热水急剧减少,多年持续开采直接导致怀4井水位大幅下降,流量减小,从而氡含量减少,导致水氡在华电2井开采期间氡值降低。通过对怀4井水氡变化机理的分析,为地下流体变化机理分析提供新的思路。The dynamic change characteristics of radon in Huai-4 Well changed after 2012.Before 2012,there was an annual change pattern with high values in winter and low in summer,and then it became low in winter and high in summer.Based on the analysis of the seepage characteristics of Huai-4 Well before and after 2012,it is considered that the change of radon in water before 2012 is mainly due to the different mixing mechanism of radon bearing water in Huai-3 and Huai-4 wells.After 2012,the hot water in the hot field area is sharply reduced,and the continuous mining for many years directly results in the sharp drop of water level and flow of Huai-4 Well,thus the decrease of radon content,which results in the decrease of radon value during the mining of Huadian-2.Based on the analysis of radon change mechanism in Huai-4 well,a new idea is provided for the analysis of underground fluid change mechanism.

关 键 词：水氡 怀4井 渗流特征 

分 类 号：P315.73[天文地球—地震学]