四川地区YRY-4型钻孔应变观测资料可靠性分析  

Reliability Analysis of Strain Observation Data of the YRY-4 Borehole in Sichuan region

作　　者：徐亚飞 张菊 周朝晖[1] 张晓明[1] 张小东[2] 徐建明[3] 阳光[4] XU Yafei;ZHANG Ju;ZHOU Zhaohui;ZHANG Xiaoming;ZHANG Xiaodong;XU Jianming;YANG Guang(Sichuan Earthquake Agency,Sichuan Chengdu 610041,China;Panzhihua Central Station of Sichuan Earthquake Agency,Sichuan Panzhihua 617061,China;Xichang Central Station of Sichuan Earthquake Agency,Sichuan Xichang 615022,China;Kangding Central Station of Sichuan Earthquake Agency,Sichuan Kangding 626001,China)

机构地区：[1]四川省地震局,四川成都610041 [2]四川省地震局攀枝花地震监测中心站,四川攀枝花617061 [3]四川省地震局西昌地震监测中心站,四川西昌615022 [4]四川省地震局康定地震监测中心站,四川康定626001

出　　处：《四川地震》2024年第3期30-35,共6页Earthquake Research in Sichuan

摘　　要：通过分析钻孔应变观测资料的干扰因素,发现四川地区YRY-4型钻孔应变受季节性降雨、钻孔水位和河水位涨落影响显著。采用钻孔应变自洽检验对钻孔应变仪观测数据进行自检,发现各台应变校正相关系数均大于0.9,说明四川地区YRY-4型应变观测资料的整体质量较高,可以用于区域地震预测和地震科学研究。Based on analyzing the interference factors of the borehole strain observation data,we found that the strain of YRY-4 type boreholes in Sichuan region was significantly affected by seasonal rainfall,borehole water level,and river water level fluctuations.The self-consistency test of the borehole strain was used to self-check the observation data of the borehole strain gauges.We found that all the strain correction correlation coefficients at each station were greater than 0.9 indicating that the overall quality of the YRY-4 strain observation data in Sichuan region is high,which can be used for regional earthquake prediction and seismic science research.

关 键 词：四川地区 YRY-4钻孔应变 自洽检验 可靠性 

分 类 号：P315.7[天文地球—地震学]