IGGCAS OpenIR  > 地球与行星物理院重点实验室
Study of different hydraulic response models to large earthquakes in two adjacent wells : the effect of shales
Zhang Yan1,2,3; Fu LiYun4; Chen XueZhong5; Cao ChengHao1,2,3; Zhao LianFeng1,2,3; Ma YuChuan6
2019
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN0001-5733
Volume62Issue:1Pages:143-158
AbstractLarge earthquakes induced different co-seismic water-level responses in Zuojiazhuang and Baodi wells (similar to 50 km apart). Barometric responses and tidal responses are used to explain this anomaly in this study. After analysis, shale was found in the aquifer lithology of well Baodi. The well is found to be significantly influenced by fractures, and has a poor water confining ability. It is likely that the complex fractures or anisotropy of shale lead to a semi-confined aquifer, and as calculated, vertical drainage occurred in the aquifer stratum. Therefore, we separate the 2 wells into 2 models - the horizontal flow model, and the (pure) horizontal flow + (pure) vertical flow model. Because of the influence of fractures, the aquifer medium of well Baodi has a good hydraulic connection with the outside field even before the occurrence of earthquakes, thus, the difference in pore pressure between the well aquifer and the outside field is small, leading to a tiny (or even none) co-seismic permeability increase, and those might be the reasons why the co-seismic water-level changes in Baodi well are always small and unclear.
KeywordTidal/barometric responses Horizontal/vertical flow model Water level Shale Large earthquakes
DOI10.6038/cjg2019L0612
WOS KeywordWATER-LEVEL CHANGES ; AQUIFER SYSTEMS ; MECHANISM ; STRAIN ; PERMEABILITY ; SENSITIVITY ; WAVES
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000457640700011
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/90530
Collection地球与行星物理院重点实验室
Corresponding AuthorZhang Yan
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
4.China Univ Petr East China, Sch Geosci, Qingdao 266580, Shandong, Peoples R China
5.China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China
6.China Earthquake Networks Ctr, Beijing 100045, Peoples R China
Recommended Citation
GB/T 7714
Zhang Yan,Fu LiYun,Chen XueZhong,et al. Study of different hydraulic response models to large earthquakes in two adjacent wells : the effect of shales[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2019,62(1):143-158.
APA Zhang Yan,Fu LiYun,Chen XueZhong,Cao ChengHao,Zhao LianFeng,&Ma YuChuan.(2019).Study of different hydraulic response models to large earthquakes in two adjacent wells : the effect of shales.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,62(1),143-158.
MLA Zhang Yan,et al."Study of different hydraulic response models to large earthquakes in two adjacent wells : the effect of shales".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 62.1(2019):143-158.
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