Empirical Relationship between Rock Structure Rating and Modulus of Deformation
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 131, Issue 3
Abstract
During the early stages of construction of a railway line in southeast India, the tunneling works encountered numerous problems, such as rock falls, major water inflow, etc. In order to progress the works, it was necessary to undertake thorough classification of the rock masses and to obtain values of the in situ modulus of deformation for inputting into numerical analyses. It was not feasible to conduct a large number of in situ determinations of the modulus of deformation. Hence, an attempt was made to establish an empirical relationship between rock structure rating and modulus of deformation for the rock masses through which the railway passed. This was done using data from tests conducted on rock samples taken from 45 boreholes at various locations along the railway line, particularly in tunnel sections where distress was observed.
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Acknowledgments
The writers are very grateful to R.N. Chowdary and M. Gupta, and other staff of the South East Railway (AFCON, Bombay) for their cooperation and providing the facilities needed for this study.
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Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 131 • Issue 3 • March 2005
Pages: 390 - 397
Copyright
© 2005 ASCE.
History
Received: Apr 23, 2003
Accepted: May 20, 2004
Published online: Mar 1, 2005
Published in print: Mar 2005
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