[1]毛巍颖.云南思茅大寨井与大理月溪井水位同震响应对比分析[J].华南地震,2022,(01):31-37.[doi:10.13512/j.hndz.2022.01.05]
 MAO Weiying.Comparative Analysis of Coseismal Response Characteristic of Water Level Between Simao Dazhai Well and Dali Yuexi Well in Yunnan[J].,2022,(01):31-37.[doi:10.13512/j.hndz.2022.01.05]
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云南思茅大寨井与大理月溪井水位同震响应对比分析()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2022年01期
页码:
31-37
栏目:
地震科学研究
出版日期:
2022-03-30

文章信息/Info

Title:
Comparative Analysis of Coseismal Response Characteristic of Water Level Between Simao Dazhai Well and Dali Yuexi Well in Yunnan
文章编号:
1001-8662(2022)01-0031-07
作者:
毛巍颖
云南省地震局,昆明 650224
Author(s):
MAO Weiying
Yunnan Earthquake Agency , Kunming 650224, China
关键词:
同震响应井孔含水层密度和孔隙度
Keywords:
Dazhai well in Simao and Yuexi well in DaliCoseismal responseWell aquifersDensity and porosity.
分类号:
P315.723
DOI:
10.13512/j.hndz.2022.01.05
文献标志码:
A
摘要:
云南思茅大寨井和大理月溪井分别位于云南西南和西北部,是云南地区主要地震流体观测井。通过水位观测数据分析,思茅大寨井水位和大理月溪井水位同震响应差异明显。思茅大寨井水位同震响应能力较好,主要表现为阶升,阶变幅度达10cm以上的有16次,最大可达57.1cm。大理月溪井水位同震响应能力较弱,阶变幅度小,主要表现为阶降。思茅大寨井含水层为中生界白垩系砂岩,结构致密、孔隙率小,有利于地震波传播导致含水层孔隙压力波动,井水位同震响应能力强。大理月溪井含水层为新生界第四系松散层,结构疏松、孔隙率大,地震波传播导致水层孔隙压力波动能力弱,水位同震响应能力相应也就弱。
Abstract:
Simao Dazhai well and Dali Yuexi well, located in southwest and northwest of Yunnan, are the main seismic fluid observation wells in Yunnan. Through the analysis of water level observation data, the coseismic response of water level of Dazhai well and Yuexi well are significantly different. The coseismic response ability of water level in Dazhai well is good, which is mainly characterized by step rise. There are 16 times of step change with amplitude more than 10 cm,and the maximum is 57.1 cm. The co-seismic response ability of the water level in Yuexi well is weak, and the magnitude of the order change is small, which is mainly characterized by step decline. The aquifer of Dazhai well is Mesozoic Cretaceous sandstone with compact structure and small porosity, which is conducive to the fluctuation of pore pressure of aquifer caused by seismic wave propagation,and the well water level has strong coseismic response ability. The aquifer of Yuexi well is a Quaternary loose layer in the Cenozoic, with loose structure and large porosity. The seismic wave propagation leads to weak pore pressure fluctuation in the water layer,and the co-seismic response of water level is correspondingly weak.

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备注/Memo

备注/Memo:
收稿日期:2021-09-10
基金项目:中国地震局星火计划,滇南-滇西南地区地下流体异常深浅耦合关系研究(XH21030Y)项目资助
作者简介:毛巍颖(1985-),女,工程师,主要从事地震预报工作。E-mail: 897162514@qq.com
更新日期/Last Update: 2022-03-30