Probabilistic assessment of engineering rock properties in Singapore for cavern feasibility
Name
925486200-MIT.pdf
Description
Full printable version
Size
11.36 MB
Format
Adobe PDF
Checksum (MD5)
1b4185bfb4f1f189f103d78e81322ab1
Author(s)
Kwa, Chin Soon
Advisor(s)
Herbert H. Einstein.
Date Issued
2015
Publisher
Massachusetts Institute of Technology
Abstract
Singapore conducted various cavern studies since the 1990s, and has since constructed two caverns. The study done in this thesis concentrates on an area of interest within South-Western Singapore, using four logged boreholes that are each 200 meters in depth. Through the use of the empirical methods, the RQD and Q-system, rock support can be estimated for different ground classes for an assumed cavern size. The cost per cubic meter of cavern construction, which includes excavation support using bolts and shotcrete, and grouting, is then estimated. To account for the variability of the ground in the area of interest, probabilistic analyses and assessments of the rock mass parameters derived from the boreholes were carried out. Discrete probabilities were obtained from observed frequencies, and and depth and spatial variability are assessed. Depth Selector Maps (DSM) are created to give planners an indication of the ideal location of a cavern, both in depth and spatially, by providing them with an indication of the variability of the ground so that planners can take the associated uncertainty into consideration when making decisions.
Description
Thesis: M. Eng., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2015.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 89-94).
Subjects
Civil and Environmental Engineering.
MIT Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
Terms of Use
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