德令哈台尕海井气氡仪脱气装置改造试验*
文 勇1,邱鹏成2,张 敏1,孟 鑫1,李国佑2,吴 哲2

(1.青海省地震局 德令哈地震台,青海 德令哈 817099; 2青海省地震局,青海 西宁 810001)

气氡观测; 脱气装置; 改造试验

Refitment Test of Radon Degassing Instrument Device in Gahai Well at Delingha Station
WEN Yong1,QIU Peng-cheng2,ZHANG Min1,MENG Xin1,LI Guo-you2,WU Zhe2

(1. Delingha Seismic Station,Earthquake Administration of Qinghai Province,Delingha 817099,Qinghai,China)(2. Earthquake Administration of Qinghai Province,Xining 810001,Qinghai,China)

gas radon observation; degassing device; refitment test

备注

通过对2007年12月至2014年7月德令哈尕海井气氡的数据分析,得出以下结论:同一个观测点,不同脱气装置会产生出不同的观测结果; 冷水井和温泉井用同一脱气装置,所观测到的数据也不相同; 脱气装置出气口和仪器进气口之间的气管距离越短越好,过长容易引起氡值的不稳定。针对德令哈地震台尕海井气氡数据长年不可用,数据变化不稳定且幅度大的实际情况,对脱气装置进行反复试验、改造,研制完成的脱气装置在尕海气氡观测中获得良好效果,气氡整点观测值稳定,数据变化形态在5 Bq/L之内,数据真实可靠,无超差,研究结果达到了预期的目的 。

Analyzing the gas radon data in Gahai well at Delingha Seismic Station from Dec.,2007 to Jul.,2014,we obtain the result as follow:The different degassing device produces the different observation results at same observation point,the data is different in cold water well and spring well which were installed the same degassing device,and the length of air tube between the air outlet and the air inlet of degassing device should be as short as possible,if the air tube is too long,it is easy to cause the instability of the radon value. According to the gas radon data cannot be used for many years,the change of data is not stable and shows large amplitude,the degassing device has been tested and refitted repeatedly. The degassing device received a good result in observation in Gahai well at Delingha Seismic Station after the refitment,and the hour observation value of gas radon is stable,dynamic variation of data is within 5 Bq/L. So the data is true,reliable,and has no error,and the results achieved the expected objective.