不同类型洞体应变仪的观测差异性分析  

Observation Difference Analysis of Three Types of Cave Strain Meters

作　　者：孙伶俐[1,2] 蒋玲霞 吕琳[1,2] 张辉 邓建刚[3] SUN Lingli;JIANG Lingxia;Lü Lin;ZHANG Hui;DENG Jiangang(Key Laboratory of Earthquake Geodesy,Institute of Seismology,CEA,Wuhan 430071,Hubei,China;Hubei Key Laboratory of Earthquake Early Warning,Hubei Earthquake Agency,Wuhan 430071,Hubei,China;Center for Earthquake Monitoring and Prediction of Hubei Province,Wuhan 430071,Hubei,China)

机构地区：[1]中国地震局地震研究所地震大地测量重点实验室,湖北武汉430071 [2]湖北省地震局地震预警湖北省重点实验室,湖北武汉430071 [3]湖北省地震监测预报中心,湖北武汉430071

出　　处：《地震工程学报》2020年第1期129-135,共7页China Earthquake Engineering Journal

基　　金：中国地震局专项“全国地球物理台网数据跟踪分析与产出”;中国地震局武汉地球观测研究所专项资助项目(IS20156227,IS20156226);中国地震局武汉地球观测研究所专项资助目(批准号:IS20156227、IS20156226)

摘　　要：运用SPSS中聚类及PCA方法对湖北省7个台站三类基线(石英管、铟钢棒、铟钢管)洞体应变观测记录进行相关统计分析,归纳总结其潮汐参数变化特征差异,并针对观测中自然环境因素影响进行定量分析。结果显示:(1)三类基线中,铟钢棒类M2波潮汐因子、中误差及M1波相对噪声水平较低,铟钢棒管年均漂移量最小;(2)自然环境因素(气压、降水、雷雨、温度)对湖北地区洞体应变观测影响较为显著,等量气压影响下应变量最小的为铟钢管型,等量温度影响下应变量最小的为铟钢棒型。On the basis of the strain observation data of three types of baselines(quartz tube,indium steel bar,and indium steel tube)of seven stations in Hubei Province,the variation characteristics of the tidal parameters of the baselines were summarized,and the influence of natural environmental factors on the observation was quantitatively analyzed.The clustering method and principal component analysis method in SPSS were used.Results showed the following.(1)Among the three baselines,the tidal factor and mean error of the M2 wave and the relative noise of the M1 wave of the indium steel tube were the lowest;the average annual drift of the indium steel bar was the smallest.(2)The natural environmental factors of air pressure,precipitation,thunderstorm,and temperature exerted a significant influence on the cave strain observation in the Hubei area.The indium steel tube had the lowest strain under equal pressure,and the indium steel bar had the lowest strain under equal temperature.

关 键 词：洞体应变 石英管 铟钢棒 铟钢管 差异性 

分 类 号：P315.72[天文地球—地震学]