摘要
基于2016—2021年山西代县YRY-4分量钻孔应变观测资料,采用Venedikov调和及相对标定等方法,从观测数据连续率、完整率、年变趋势及稳定性等方面,验证观测数据可靠性,并利用相对标定结果对观测数据进行校正。根据“钻孔加衬”理论模型和应变换算理论,解算测区构造应变变化,结果表明:代县测站附近的应变场处于稳定拉伸状态,应变主方向为187°。
Based on the observation data of YRY-4 component borehole strain in the county from 2016 to 2021,we used Venedikov reconciliation and relative calibration methods to verify the reliability of observation data from the aspects of continuity,integrity,annual variation trend and stability of observation data.Moreover,we applied the relative calibration results to correct the observation data.According to the“borehole lining”theoretical model and the strain conversion theory,the structural strain changes in the survey area are calculated.The results show that the strain field near Daixian station is in a stable extrusion state,which is characterized by the main direction of strain at 187°.
作者
尚永明
SHANG Yongming(Xinzhou Earthquake Monitoring Center Station of Shanxi Earthquake Agency,Shanxi Xinzhou 034000,China;National Continental Rift Valley Dynamics Observatory of Taiyuan,Shanxi Taiyuan 030025,China)
出处
《四川地震》
2023年第3期26-30,43,共6页
Earthquake Research in Sichuan
关键词
YRY-4分量钻孔应变
相对标定
调和分析
可靠性
构造应变变化
YRY-4 component borehole strain
relative calibration
harmonic analysis
reliability
tectonic strain variation
