Deformational Control in Excavating Unstable Slopes
Publication: Journal of Geotechnical Engineering
Volume 113, Issue 4
Abstract
Rock bolting is not a commonly used tool for stabilizing rock slopes; however, its use in stabilizing large slopes in very poor rock is demonstrated here. During the excavation of double silos for a large pumped water storage hydroelectric scheme, multiple slope failures occur. Further excavation has been suspended until stabilization and excavation processes are determined. Extensive geological and numerical modeling, followed by sensitive monitoring with ongoing construction, is required. Deformations are predicted using a mechanistic finite element method. The installed monitoring system with predicted deformations is used to control construction and support requirements. If the measured deformations exceed the predicted deformations by more than 30% to 100%, depending on the class of rock, then reasons for these differences are determined before further excavations are performed.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Bieniawski, Z. T. (1976). “Rock mass classification in rock engineering.” Proc. of the Symp. on Exploration for Rock Engrg., Johannesberg, South Africa, 1, 97–106.
2.
Chappell, B. A. (1984a). “Determination of rock mass modulus.” 4th Australian‐New Zealand Conf. on Geomech. and Geomech. Interaction, Perth, Australia.
3.
Chappell, B. A. (1984b). “Deformational mechanisms of a rock mass.” 4th Australian‐New Zealand Conf. on Geomech. and Geomech. Interaction, Perth, Australia.
4.
Chappell, B. A. (1986a). “Structural response and rock bolting of a rock mass.” Internat'l. Jl of Mining, to be published.
5.
Chappell, B. A. (1986b). “Stress distribution in anisotropic compliance of jointed rock.” Jl. of Geotech. Engrg., ASCE. 112(7), July, 682–700.
6.
Chappell, B. A., and Maurice, R. (1980a). “Classification of rock mass related to foundations.” Proc. Internat'l. Conf. on Struct. Foundations on Rock, Balkema, Rotterdam, The Netherlands, 29–36.
7.
Chappell, B. A., and Maurice, R. (1980b). “Determination of mass moduli for slope design.” 3rd Australian‐New Zealand Conf. on Geomech. Wellington, New Zealand, 93–100.
Information & Authors
Information
Published In
Copyright
Copyright © 1987 ASCE.
History
Published online: Apr 1, 1987
Published in print: Apr 1987
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.