YRY-4分量钻孔应变仪具有高分辨力特点，在实际运行过程中能够记录到多种类型的外界干扰，表现为观测曲线突变或趋势异常。选取山西忻州地区5套四分量钻孔应变仪自运行以来的观测资料，基于各类干扰因素特征进行分析，结果表明：在日常运行中，影响钻孔应变观测的典型干扰因素主要有观测系统、自然环境、场地环境、人为干扰等；观测系统运行稳定，映震效能良好。
The YRY-4 component borehole strain gauge has the characteristics of high resolution and can record various types of external interference in actual operation processes, which is manifested as sudden changes or abnormal trends of observation curves. This study selects and analyzes the observation data of five sets of four component borehole strain gauges in the Xinzhou area, Shanxi Province since their operation, based on the characteristics of various interference factors. The results show that in daily operation, typical interference factors affecting borehole strain observation mainly include observation systems, natural environments, field environments, human interference, etc. The observation systems are stable and have good seismic reflection efficiency.
2023,44（5）: 159-166 收稿日期：2022-11-22
DOI：10.3969/j.issn.1003-3246.2023.05.019
作者简介：尚永明,男,硕士研究生,助理工程师,主要从事前兆观测与研究工作。E-mail:shangyongming@outlook.com
参考文献：
李鹏,冯琼松,贾华,等. 贵阳台钻孔应变观测干扰情况分析[J]. 国际地震动态,2016,(4):33-38.
彭登靖. 昭通地震中心站YRY-4钻孔应变仪观测数据干扰分析[J]. 地震地磁观测与研究,2022,43(4):106-114.
彭登靖,马敏伟,秦波,等. 降雨变化对昭通中心站YRY-4钻孔应变仪的影响分析[J]. 地震科学进展,2022,52(9):414-419.
祁蒙,吴继炜,张岑,等. 徐州地震台2016年11月-2017年YRY-4分量钻孔应变仪异常核实[J]. 地震地磁观测与研究,2020,41(5):83-89.
邱泽华. 关于地震前兆的判据问题[J]. 大地测量与地球动力学,2010,30(Z2):1-5.
宋俊朋,栗宁,熊丽,等. 襄樊地震台YRY-4钻孔应变仪干扰特征分析[J]. 甘肃科学学报,2019,31(4):14-22.
张凌空,王广才,牛安福. 周期气压波对地壳应变场观测影响的若干因素分析[J]. 地震学报,2011,33(3):351-361.
