- Title
- Rainfall-induced deformation behavior of cracks on brown coal open pit batter in Australia
- Creator
- Zhao, Lei; You, Greg
- Date
- 2019
- Type
- Text; Conference paper
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/182920
- Identifier
- vital:16220
- Identifier
- ISBN:9784909106025
- Abstract
- After a 26mm rainfall in 24 hours, noticeable ground movements were observed on the north batter at Maddingley Brown Coal Open Pit Mine, Victoria, Australia in February 2014. The batter is brown coal sandwiched by confining beds. Cracks manifested on the north batter months before the rainfall event, and then an emergency buttress was immediately constructed to maintain the batter stability. A three-dimensional geologic model is developed to study the rainfall-induced ground movement in this paper. The finite element program encoded in Plaxis 3D is employed to conduct the complex two-phase (fluid-solid) coupled numerical simulation. It is found that the simulated deformation is well agreed with the observed data from field survey markers. There are ground movements along the length of cracks on both sides with larger movement towards the pit bottom. These movements are the results of the combined reactions of surface run-off and sudden increased underground water level. The 26mm rainfall event did not cause instability of the batter.
- Publisher
- Geomate International Society
- Relation
- 9th International Conference on Geotechnique, Construction Materials and Environment, 20-22 November 2019, Tokyo Japan p. 458-463
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- Copyright @ 2019 by The GEOMATE International Society
- Subject
- Crack,; Rainfall; Deformation; Brown Coal; Open-Pit Mining
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