Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR021872 |
A Novel Approach to Model Earth Fissure Caused by Extensive Aquifer Exploitation and its Application to the Wuxi Case, China | |
Ye, Shujun1; Franceschini, Andrea2; Zhang, Yan3; Janna, Carlo2; Gong, Xulong3; Yu, Jun3; Teatini, Pietro2 | |
2018-03-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:3页码:2249-2269 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Italy |
英文摘要 | Initially observed in the semiarid basins of southwestern USA, earth fissures due to aquifer over-exploitation are presently threatening a large number of subsiding basins in various countries worldwide. Different mechanics have been proposed to explain this process, such as differential compaction, horizontal movements, and fault reactivation. Numerical modeling and prediction of this major geohazard caused by overuse of groundwater resources are challenging because of two main requirements: shifting from the classical continuous to discontinuous geomechanics and incorporating two-dimensional features (the earth fissures) into large three-dimensional (3-D) modeling domain (the subsiding basin). In this work, we proposed a novel modeling approach to simulate earth fissure generation and propagation in 3-D complex geological settings. A nested two-scale approach associated with an original nonlinear elastoplastic finite element/interface element simulator allows modeling the mechanics of earth discontinuities, in terms of both sliding and opening. The model is applied on a case study in Wuxi, China, where groundwater pumping between 1985 and 2004 has caused land subsidence larger than 2 m. The model outcomes highlight that the presence of a shallow (similar to 80 m deep) bedrock ridge crossing the Yangtze River delta is the key factor triggering the earth fissure development in this area. Bending of the alluvial deposits around the ridge tip and shear stress due to the uneven piezometric change and asymmetrical shape of the bedrock have caused the earth fissure to onset at the land surface and propagate downward to a maximum depth of about 20-30 m. Maximum sliding and opening are computed in the range of 10-40 cm, in agreement with the order of magnitude estimated in the field. |
英文关键词 | earth fissure numerical modeling extensive aquifer exploitation application Wuxi case China |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000430364900046 |
WOS关键词 | XI-CHANG AREA ; LAND SUBSIDENCE ; GROUND FISSURES ; NUMERICAL-SIMULATION ; WITHDRAWAL ; FAULT ; DEFORMATION ; SHANGHAI ; FRICTION ; FAILURE |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21988 |
专题 | 资源环境科学 |
作者单位 | 1.Nanjing Univ, Sch Earth Sci & Engn, Nanjing, Jiangsu, Peoples R China; 2.Univ Padua, Dept Civil Environm & Architectural Engn, Padua, Italy; 3.Minist Land & Resources, Key Lab Earth Fissures Geol Disaster, Geol Survey Jiangsu Prov, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Ye, Shujun,Franceschini, Andrea,Zhang, Yan,et al. A Novel Approach to Model Earth Fissure Caused by Extensive Aquifer Exploitation and its Application to the Wuxi Case, China[J]. WATER RESOURCES RESEARCH,2018,54(3):2249-2269. |
APA | Ye, Shujun.,Franceschini, Andrea.,Zhang, Yan.,Janna, Carlo.,Gong, Xulong.,...&Teatini, Pietro.(2018).A Novel Approach to Model Earth Fissure Caused by Extensive Aquifer Exploitation and its Application to the Wuxi Case, China.WATER RESOURCES RESEARCH,54(3),2249-2269. |
MLA | Ye, Shujun,et al."A Novel Approach to Model Earth Fissure Caused by Extensive Aquifer Exploitation and its Application to the Wuxi Case, China".WATER RESOURCES RESEARCH 54.3(2018):2249-2269. |
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