Stability of Slurry Trenches with Inclined Ground Surface
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 139, Issue 9
Abstract
A method for assessing stability of slurry trenches within an inclined ground surface is presented using the Coulomb-type force equilibrium method. The influence of ground surface inclination on trench stability and angle of critical failure surface is investigated via parametric studies on an example trench. As expected, the factor of safety decreases considerably with an increase in the ground surface inclination. It is shown that it is unconservative to neglect ground surface inclination while analyzing trench stability. According to the example, no significant error in the minimum factor of safety is introduced by using the failure surface inclination angle of for trenches with an inclined ground surface. It is also found that differences between the angle of critical failure surface and may exist; therefore, the angle of the critical failure surface needs to be determined instead of using for the design of remedial measures.
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Acknowledgments
The financial support received from National Natural Science Foundation of China (NSFC) Grant No. 51009121, National Basic Research Program of China (973 Program) Grant No. 2012CB719802, and National High Technology Research and Development Program of China (863 Program) Grant No. 2012AA062601 is gratefully acknowledged.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 139 • Issue 9 • September 2013
Pages: 1617 - 1619
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Apr 23, 2012
Accepted: Nov 19, 2012
Published online: Nov 21, 2012
Published in print: Sep 1, 2013
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