地震地磁观测与研究2017，Vol.38Issue(4)：153-157,5.DOI:10.3969/j.issn.1003-3246.2017.04.026
洞体应变观测中荷载干扰实例分析
Case analysis of load interference of cave strain observation
摘要
Abstract
Since the year 2012,the observation curve of NE component of SS-Y extensometer at Yixian Seismic Station in Hebei Province has shown unusual transition.The investigation discovered that the surrounding quarries load variations may be the cause of the data change.Therefore,using three-dimensional solid structural finite element models,combined with load change and analysis on strain anomaly comparison,it finally indicated:the theoretical year amplitude value of NE component of extensometer computed is 2.62× 10-7,but actual observes unusual annual variation for 4.08×10-7,the actual strain value is nearly theoretical value 2 times.Obviously,the strain anomaly associated with load changes caused by quarrying.关键词
伸缩仪/荷载/异常Key words
extensometer/load/anomaly引用本文复制引用
张娜,龚燕民,李博..洞体应变观测中荷载干扰实例分析[J].地震地磁观测与研究,2017,38(4):153-157,5.基金项目
2014年河北省地震局监测、预报、科研三结合项目 （）
