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Title: UNCERTAINTY ANALYSIS OF TUNNEL ROOF STABILITY
Accession Number: 00740656
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: Fractures, joints, and other discontinuities significantly influence the stability of excavations in rock. Unstable blocks of rock in the roofs of tunnels can have a significant effect on the safety and economic feasibility of highways and railroads. The stability of tunnel roof keyblocks subject to self-weight and surface forces is examined using linear programming methods. An instability measure based on the concept of fuzzy sets is used to characterize the level of instability. On the basis of analysis of the instability measure, the support pressure required to stabilize the tunnel roof can be estimated. A probabilistic analysis based on the expectation of the instability measure is used to examine the effect of the uncertainties caused by the variability of rock material properties.
Supplemental Notes: This paper appears in Transportation Research Record No. 1582, Centrifuge Modeling, Intelligent Geotechnical Systems, and Reliability-Based Design.
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Mauldon, MChou, K CWu, YujiaPagination: p. 53-59
Publication Date: 1997
Serial: ISBN: 0309061571
Features: Figures
(7)
; References
(25)
; Tables
(1)
TRT Terms: Uncontrolled Terms: Old TRIS Terms: Subject Areas: Bridges and other structures; Data and Information Technology; Geotechnology; Highways; I43: Rock Mechanics
Files: TRIS, TRB, ATRI
Created Date: Sep 10 1997 12:00AM
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