Numerical simulation of earth fissures due to groundwater withdrawal
Excessive groundwater withdrawal can cause land subsidence and earth fissures. The initiation and propagation of earth fissures are related to tensile failure and crack propagation in soils. Based on fracture mechanics, the crack band model (CBM), one of the smear crack models which is relativel...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2015-11-01
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| Series: | Proceedings of the International Association of Hydrological Sciences |
| Online Access: | https://www.proc-iahs.net/372/395/2015/piahs-372-395-2015.pdf |
| Summary: | Excessive groundwater withdrawal can cause land subsidence
and earth fissures. The initiation and propagation of earth fissures are
related to tensile failure and crack propagation in soils. Based on fracture
mechanics, the crack band model (CBM), one of the smear crack models which
is relatively easy to construct and convenient to be integrated into
standard finite element codes is used in this paper. The calculated results
of CBM are less dependent on the sizes of finite elements. The model was
applied to simulate the formation and propagation of earth fissures in the
hydrostratigraphic units with a bedrock ridge. The simulated positions and
patterns of earth fissures coincide with field observations, suggesting that
the modeling approach is adept to simulate the initiation and propagation of
earth fissures due to groundwater withdrawal. |
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| ISSN: | 2199-8981 2199-899X |