江苏海安顾庄观测站井下地电阻率观测影响系数分析

doi:10.12196/j.issn.1000-3274.2022.03.014

地震 ›› 2022, Vol. 42 ›› Issue (3): 192-203.doi: 10.12196/j.issn.1000-3274.2022.03.014

江苏海安顾庄观测站井下地电阻率观测影响系数分析

鲍海英¹, 夏忠², 毕雪梅¹, 李鸿宇¹, 王昕³

1.江苏省地震局, 江苏南京 210014;
2.新沂地震台, 江苏新沂 221400;
3.海安地震台, 江苏海安 226600

收稿日期:2021-07-20 修回日期:2021-12-10 发布日期:2023-03-29
通讯作者: 夏忠, 高级工程师。 E-mail: 706862116@qq.com
作者简介:鲍海英(1986-), 女, 安徽枞阳人, 工程师, 主要从事地电观测数据处理与分析研究。
基金资助:
中国地震局重大政策理论与实践问题研究课题(CEAZY2021JZ08)

Influence Coefficients Analysis of Down Hole Resistivity Observation in Hai’an Seismic Station, Jiangsu Province

BAO Hai-ying¹, XIA Zhong², BI Xue-mei¹, LI Hong-yu¹, WANG Xin³

1. Earthquake Administration of Jiangsu Province, Nanjing 210014, China;
2. Xinyi Seismic Station, Xinyi 221400, China;
3. Hai’an Seismic Station, Hai’an 226600, China

Received:2021-07-20 Revised:2021-12-10 Published:2023-03-29

摘要/Abstract

摘要： 根据地电阻率影响系数理论, 分析了江苏省海安顾庄观测站井下地电阻率台站在对称四极地电阻率观测时, 每层介质的影响系数随深度和极距的变化情况, 并对该台站的观测装置系统进行评估。结果表明: ① 与地表NS向观测相比, 海安顾庄观测站井下观测装置能较好地抑制地表干扰; ② 海安顾庄观测站井下观测的供电极距AB2在100~235 m, 电极埋深H在28~34 m较合理。该分析结果可为具有类似台址电性结构的地电阻率台站实施井下观测提供一定的参考。

关键词: 地电阻率, 井下观测, 影响系数, 电性结构, 年变化

Abstract: Based on the theory of influence coefficient of resistivity observation, the variation of influence coefficient of each layer was analyzed, with the change of depth and polar distance for symmetrical quadrupole apparent resistivity observation system at Hai’an Guzhuang deep-well resistivity observation station in Jiangsu Province, and the observation device system of this station was evaluated. The results showed that: ① Compared with the surface NS observation, the deep-well resistivity observation device of Hai’an Guzhuang observation station could better suppress the surface interference; ② It is reasonable with the power supply electrode distance AB2 observed at Hai’an station down hole resistivity between 100 m and 235 m and the electrode buried depth H between 28 m and 34 m. The analysis results could provide some reference for down hole resistivity observation at stations with similar electrical structure.

Key words: Geoelectrical resistivity, Down hole observation, Influence coefficient, Electrical structure, Annual change

中图分类号:

P315.7

鲍海英, 夏忠, 毕雪梅, 李鸿宇, 王昕. 江苏海安顾庄观测站井下地电阻率观测影响系数分析[J]. 地震, 2022, 42(3): 192-203.

BAO Hai-ying, XIA Zhong, BI Xue-mei, LI Hong-yu, WANG Xin. Influence Coefficients Analysis of Down Hole Resistivity Observation in Hai’an Seismic Station, Jiangsu Province[J]. EARTHQUAKE, 2022, 42(3): 192-203.

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江苏海安顾庄观测站井下地电阻率观测影响系数分析

Influence Coefficients Analysis of Down Hole Resistivity Observation in Hai’an Seismic Station, Jiangsu Province

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