注水试验与降雨对体应变仪干扰的分析与研究  

Interference of Water Injection Test and Rainfall on Volumetric Strain gauge

作　　者：王艳[1] 王慧芳 赵慧琴[1] 吕文青[1] 张肖[2] WANG Yan1, WANG Hui-fang1 , ZHAO Hui-qin1 , LV Wen-qing1, ZHANG Xiao2(1. Baoding Central Seismological Station of Hebei Earthquake Agency, Baoding, Hebei 071000, China; 2. Wen＇an Seismic Station of Hebei Earthquake Agency, Wen＇ an, Hebei 065800, Chin)

机构地区：[1]河北省地震局保定中心地震台,河北保定071000 [2]河北省地震局文安地震台,河北文安065800

出　　处：《山西地震》2018年第2期1-4,共4页Earthquake Research in Shanxi

基　　金：河北省地震局地震科研基金项目(DZ20080308006)

摘　　要：易县地震台体应变仪传感器安装在地下70m处,相对于其他固体潮仪器埋点更深,能清晰地反映探头附近岩石受到的应力变化。在观测过程中发现,地下水位的变化对体应变仪观测值有一定的影响。文章通过对近年来几次大范围降雨以及注水试验产出的数据、图形进行定性、定量分析,总结出水位变化与体应变仪测值间的变化规律。The sensor of the volumetric strain gauge in Yixian seismic station is installed in the underground 70 m,which is deeper than the other solid tide instruments,and can clearly reflect the stress changes of the rock near the probe.It is found that the change of groundwater level has a certain effect on the observation value of volumetric strain gauge.Through the qualitative and quantitative analysis of the data and graphics of several large range of rainfall and water injection test in recent years,the law of variation of water level and the measured value of volumetric strain gauge is summed up.

关 键 词：体应变 注水试验 降雨 干扰分析 

分 类 号：P315.8[天文地球—地震学]