Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR027553 |
Understanding Ground Rupture due to Groundwater Over‐Pumping by a Large Lab Experiment and Advanced Numerical Modelling | |
S. Nardean; M. Ferronato; Y. Zhang; S. Ye; X. Gong; P. Teatini | |
2021-02-07 | |
发表期刊 | Water Resources Research |
出版年 | 2021 |
英文摘要 | Ground rupture due to groundwater pumping is a major environmental hazard accompanying land subsidence in some areas. Ground ruptures usually develop when a significant compaction affects a sedimentary sequence with peculiar geological conditions, e.g., the presence of a shallow bedrock with buried ridges. A laboratory test was developed with the aim at improving our understanding of the mechanisms responsible for rupture generation in this particular hydrogeological setting, typical, for instance, of the Guangming village, China. A 0.8‐m high concrete prism, representing a rocky ridge, was placed in a 4.0‐m long, 1.8‐m wide, and 1.4‐m high box and buried by alluvial material. The box was saturated and then drained, with the formation of a main crack above the prism‐shaped ridge. The measured water content, vertical displacements, strains, rupture initiation and growth are analyzed through an original coupled 3D‐numerical model, simulating the variably saturated groundwater flow in a deformable and fractured porous medium. To our knowledge, this is the first application of such a kind of model to a lab‐scale experiment. Despite the uncertainty on the material parameters, the numerical model allows satisfactorily reproducing the observed groundwater flow, land subsidence, and rupture features (depth and width). The rupture dynamics is captured in part as well, despite the employment of a simple Mohr‐Coulomb failure criterion and although other forces (e.g., electrochemical) may likely play a role at the metric scale of the lab test. The modelling outcomes provide a clear view on how the rupture develops from the surface and propagates downward. This article is protected by copyright. All rights reserved. |
领域 | 资源环境 |
URL | 查看原文 |
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/313829 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | S. Nardean,M. Ferronato,Y. Zhang,等. Understanding Ground Rupture due to Groundwater Over‐Pumping by a Large Lab Experiment and Advanced Numerical Modelling[J]. Water Resources Research,2021. |
APA | S. Nardean,M. Ferronato,Y. Zhang,S. Ye,X. Gong,&P. Teatini.(2021).Understanding Ground Rupture due to Groundwater Over‐Pumping by a Large Lab Experiment and Advanced Numerical Modelling.Water Resources Research. |
MLA | S. Nardean,et al."Understanding Ground Rupture due to Groundwater Over‐Pumping by a Large Lab Experiment and Advanced Numerical Modelling".Water Resources Research (2021). |
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