敦化南沟泉1井水氡异常原因分析

The detailed analysis of water radon anomaly in No.1 Well of Nangou Spring, Dunhua

敦化南沟泉1井自2015年3月突现低值异常,通过观测井口装置、井口附近环境变化和检查观测仪器,排除井口背景因素引起的干扰,认为该低值异常是由于闪烁室密封胶环破损,真空度达不到要求,使得水样氡值偏低。对南沟泉1井水氡异常原因的分析与探讨方法,为其它水化综合台异常分析提供参考依据。

A low value anomaly appeared in No.1 Well of Dunhua Nangou Spring since March, 2015. We intensively observed the wellhead equipment, analyzed the environment changes and examined the instrument, finally excluded the interference of the wellhead background conditions. We considered that the low value anomaly is due to the damage of the sealing rubber ring of scintillation chamber, the vacuum degree does not meet the requirements so that the water radon values lower. The analysis and discussion on the cause of water radon abnormal in No.1 Well of Nangou Spring will provide basis for other seismic station.