基于钻孔特性的体应变观测相关性研究  

Study on Correlation of Volume Strain Observation Based on Borehole Features

作　　者：何斌[1] 田韬[1] 王恒知[1] HE Bin;T1AN Tao;WANG Hengzhi(Earthquake Ad ministration of Jiangsu Province , Nanjing 210014 ,Jiangsu , China)

机构地区：[1]江苏省地震局,江苏南京210014

出　　处：《地震工程学报》2018年第1期153-158,共6页China Earthquake Engineering Journal

基　　金：江苏省地震局局长基金(201501JY);江苏省地震局青年基金(201701);中国地震局三结合课题(CEA-JC/3JH-171103X)

摘　　要：采用相关分析与调和分析方法对江苏省数字化以来的体应变观测数据进行计算,研究不同台站观测资料变化特征。结合钻孔柱状图和仪器运行状况,分析了M_2波潮汐因子、气压和水位回归系数与岩性和井孔特性的关系,讨论在安装过程中提高体应变仪观测质量的有效措施。Fifteen volume strain observation points were established in Jiangsu province during the construction of the Jiangsu digital seismic precursor network.However,the stability of observa-tion data obtained from these points is influenced by differing installation times,geographical po-sitions?geological conditions,and drilling features.Regression and harmonic analyses have been used in this study to discuss the observed data of volume strain in Jiangsu province;further,the variation characteristics of observed data obtained from different stations have also been analyzed.In combination with borehole histogram and the running status of instruments,the relation among the tidal factor of the M2wave,regression coefficients of pressure and water level,litholo-gy,and borehole features are analyzed.In addition,effective measures that can improve the quali-ty of volume strain observation are discussed.

关 键 词：体应变 M2波 钻孔特性 回归分析 调和分析 

分 类 号：P315.72[天文地球—地震学]