地下水位对定点形变观测影响分析——以九江中心站异常核实为例
Preliminary study on the influence of groundwater level on fixed-point deformation—Take Jiujiang Central Station anomaly verification as an example
黄仁桂 1袁俊 1赵爱平 2罗丽 2赵影 1李雨泽 1肖孟仁 1肖健 2吕坚 2王良俊 2罗桂生 1朱国伟 1胡婷霞1
作者信息
- 1. 中国九江 332006 江西九江扬子块体东部地球动力学野外科学观测研究站;中国南昌 330039 江西省地震局
- 2. 中国南昌 330039 江西省地震局
- 折叠
摘要
2020 年 5 月九江 1 井水位出现大幅突降,九江地震监测中心站形变观测仪器测值均出现异常.通过对九江中心站自然环境、观测系统、人为干扰等情况进行排查,并对九江 2 井进行加密监测,即利用井下电视对九江 2 井的地下结构进行探查,此次异常与 2008 年 9 月钻井对形变数据产生的异常进行对比分析.结合该区域水文地质情况分析认为,2020 年 5 月九江 1 井水位异常为非地震区域性构造活动.通过数据分析,总结了地下水位对定点形变观测数据的影响因素.
Abstract
In May 2020,a significant sudden drop in the water level of Well 1 in Jiujiang was observed,accompanied by anomalies in the deformation measurement values recorded by the instruments at the Jiujiang Earthquake Monitoring Center Station.An investigation was conducted into the natural environment of the Jiujiang Center Station,the observation system,and potential human interferences.Furthermore,enhanced monitoring of Well 2 in Jiujiang was implemented,including exploring the underground structure of Well 2 by using downhole television.The anomaly was compared and analyzed against the anomalies produced in the deformation data by drilling in September 2008.Considering the hydrogeological conditions of the area,it was concluded that the abnormal water level in Jiujiang Well 1 in May 2020 was due to non-seismic regional tectonic activity.The influencing factors of groundwater level on fixed-point deformation data are summarized by analyzing data.
关键词
水位/形变数据/异常Key words
water level/deformation data/anomaly引用本文复制引用
基金项目
国家自然科学基金(42274235)
中国地震局地震科技星火计划(XH21017Y)
地震国家计量技术规范制修订计划(G2022004)
出版年
2024
国家科技期刊平台
NSTL
万方数据