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Asymmetrical Subsidence Resulting from Material and Fluid Extraction

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Title: Asymmetrical Subsidence Resulting from Material and Fluid Extraction
Author: Martz, Patrick
Issue Date: 2009-04-10
Publicly Available in cIRcle 2009-04-14
Citation: Martz, Patrick. 2009. Asymmetrical Subsidence Resulting from Material and Fluid Extraction. Undergraduate Honours Thesis. Department of Earth and Ocean Sciences. University of British Columbia. http://hdl.handle.net/2429/7030
Abstract: Land subsidence has been experienced all over the world due to a multitude of natural processes and anthropogenic activities. Groundwater and material extraction both lead to subsidence at surface. Much of the literature related to subsidence evaluates parameters and modelling methods based on continuum derivations. These models often only simulate symmetrical profiles of subsidence because of assumptions of isotropy, homogeneity and continuum behaviour, when in many cases the geological conditions do not promote symmetry. The heterogeneity of the soil or rock mass and the presences of disconformities both contribute to difficult prediction of asymmetrical subsidence. Areas prone to subsidence are therefore of great concern as differential surface subsidence can compromise engineered structures. This paper focuses on the contributing factors of asymmetry in subsidence as observed in five industries: longwall mining, tunnelling, groundwater withdrawal, oil and gas extraction, and geothermal fluid withdrawal.
Affiliation: Science, Faculty ofEarth and Ocean Sciences, Department of
URI: http://hdl.handle.net/2429/7030
Peer Review Status: Unreviewed
Scholarly Level: Undergraduate

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