依兰地震台新老水管仪对比分析

依兰地震台由于受到哈佳高铁的影响,在依兰县松花江北岸烟筒山林场以南一公里新建观测山洞,重新安装水管仪,选取依兰地震台新建形变山洞和原形变山洞DSQ型水管倾斜仪2020年度观测资料,从观测环境、基线长度、洞室覆盖厚度、仪器密封方式、主要干扰源、观测资料内在质量、降水、气压因素影响差异等方面,对比分析两套仪器水管倾斜观测的异同点,并分析观测资料质量出现差异的可能原因。重点检验新安装水管仪能否从各个方面超过原台站水管仪,并取代原水管仪观测。结果显示,依兰地震台新建形变观测山洞的基础条件、水管仪的安装条件与观测资料内在质量全面优于原形变山洞。

Due to the influence of Ha-Jia high-speed railway,Yilan Seismic Station built a new observation cave one kilometer south of Yantangshan Forest Farm on the north bank of Songhua River in Yilan County,installed a new water pipe meter,and selected the observation data of DSQ water pipe tiltmeter in 2020 for newly built deformation cave and original deformation cave at Yilan Seismic Station.The similarities and differences of water pipe tilt observation between the two sets of instruments are compared and analyzed from the aspects of observation environment,baseline length,cavern cover thickness,instrument sealing mode,main interference sources,internal quality of observation data,precipitation and air pressure factors,etc.the possible reasons for the differences in the quality of observation data are analyzed;besides,this study focuses on testing whether the newly installed water pipe instrument can surpass the original station water pipe instrument in all aspects and replace the original water pipe instrument observation.The results show that the basic conditions of the new deformation observation cave,the installation conditions of the water pipe instrument and the internal quality of the observation data of the Yilan Seismic Station are better than those of the original deformation cave.