Preliminary predictions of subsidence in Bangkok Metropolitan area

AuthorKaweepoj Worayingyong
Call NumberAIT Thesis no.776
Subject(s)Subsidences (Earth movements)--Bangkok Metropolitan Area
NoteA thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering at the Asian Institute of Technology, Bangkok, Thailand.
PublisherAsian Institute of Technology
AbstractThis thesis is a study of the regional subsidence in the Bangkok Metropolitan area due to ground water extraction. The Bangkok Metropolitan area are divided into three regions, namely, Bangkok, SamutPrakarn and Rangsit. In each area, the available data are collected and related together to find, by visual inspection, the probable values used in the calculation for that area. The mentioned data include soil profile, total unit weight, specific gravity, void ratio, preconsolidation pressure, e-log p curves, and piezometric pressure variation. For the soils where data are not obtained directly, they are found indirectly by extrapolation of known corresponding data of the shallower soils. The calculation is done for all regions for two assumed modes. The calculation of ultimate primary compressions of the Soft Clay using generalized soil profile, general properties, and compression characteristics is found to give good results when compared to the calculation using specific values for individual sites. The present subsidence values obtained seem to be too high when compared to the observed value of 16 cm, but the combined compressions of the Soft Clay and Stiff Clay layers are very near to this value. This may prove that the subsidence consists only of the compressions of the Soft Clay and Stiff Clay layers.
Year1975
TypeThesis
SchoolStudent Research Before 1980
DepartmentOther Field of Studies (No Department)
Academic Program/FoSThesis (Year <=1979)
Chairperson(s)Brand, E.W.
Examination Committee(s)Moh, Za-Chieh ;Balasubramaniam, A.S. ;Brenner, R.P.
Scholarship Donor(s)Government of United Kingdom
DegreeThesis (M. Eng.) - Asian Institute of Technology, 1975


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