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地震 ›› 2011, Vol. 31 ›› Issue (2): 87-96.

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四分量钻孔应变资料的质量评价及拟合分析

刘琦1, 张晶1, 池顺良2   

  1. 1.中国地震局地震预测研究所, 北京 100036;
    2.河南省鹤壁市地震局, 河南 鹤壁 458000
  • 收稿日期:2010-08-04 修回日期:2010-11-26 出版日期:2011-04-30 发布日期:2021-09-09
  • 作者简介:刘琦(1985-), 男, 山西繁峙人, 硕士学位, 主要从事形变应用等研究。
  • 基金资助:
    中国地震局地震预测研究所基本科研业务费(02092432)资助

Quality Evaluation and Fitting Analysis of 4-component Borehole Strainmeter Data

LIU Qi1, ZHANG Jing1, CHI Shun-liang2   

  1. 1. Institute of Earthquake Science, CEA, Beijing 100036, China;
    2. Earthquake Administration of Hebi city, Hebi 458000, China
  • Received:2010-08-04 Revised:2010-11-26 Online:2011-04-30 Published:2021-09-09

摘要: 针对“十五”期间完成布设的YRY-4型四分量钻孔应变仪的观测数据, 简要分析了气压、 水位与应变观测三者间的相互影响关系, 介绍了几种典型的水位干扰因素影响特点。 在对观测资料进行初步评价的基础上, 利用四分量观测特有的自检功能, 对应变观测资料的质量进行了更深入的评价。 依据资料质量评价结果, 在仪器稳定期内借助包含气压、 水位影响的综合拟合模型, 给出了信度较高观测站的各路分量响应率、 气压系数、 水位系数等参数的分布情况, 可作为今后进一步分析的背景参考。

关键词: 四分量钻孔应变, 资料评价, 综合拟合, 环境干扰

Abstract: Based on data observed by YRY-4 4-component borehole strainmeters installed during the tenth five-year project of China, this paper makes a brief analysis of how atmospheric pressure, water level, and observation data are interrelated, and introduces some typical features of influences caused by water level interference. After the initial valuation of the data, we conduct a more thorough valuation on quality of the observed data by means of self-checking function specific to 4-component observation. According to the analysis of data reliability, we focus on the distribution of response ratio, barometric coefficient, coefficient of water level and such inverse parameters, which are calculated by fitting data from highly-reliable observing stations using the comprehensive fitting model, during the period of equipment stability. This can provide a background reference for future analysis.

Key words: 4-component borehole strainmeter, Data evaluation, Comprehensive fitting, Environmental interference

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