Seepage‐Induced Mass Wasting in Coarse Soil Slopes
Publication: Journal of Hydraulic Engineering
Volume 119, Issue 10
Abstract
An expression is derived for the critical shear stress of surface flow on a noncohesive soil slope subjected to seepage‐induced mass wasting, i.e., erosion caused by a successive mobilization of flake aggregates of surficial grains. The expression is supported with data from experiments with stone fill subjected to throughflow. In current theories for hill‐slope erosion or riprap protection on slopes, buoyancy is assumed to be a constant vector directed vertically, or the seepage force is omitted as a variable. However, the present analysis shows that, for many conditions, buoyancy should be described in accordance with the dynamic pressure distribution and the seepage force should be included as a variable in the theory. Furthermore, a parameter denoted “minimum stable volume” per unit width of stone fill is introduced as a measure of global stability of the stone fill, along with seepage height on the downstream face and grain size. Experimental results indicate that the minimum stable volume decreases with increase in grain size and, for the materials investigated, is about 20% lower for crushed rock than for gravel.
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References
1.
Albertson, M. L., and Kia, R. A., eds. (1989). Design of hydraulic structures 89. Balkema.
2.
Bagnold, R. A. (1956). “The flow of cohesionless grains in fluids.” Phil. Trans., Royal. Soc. London, Series A., 249(964).
3.
Bear, J. (1988). Dynamics of fluid in porous media. Dover Publications, Inc., New York, N.Y.
4.
Hartung, F., and Scheurlein, H. (1970). “Design of overflow rockfill dams.” Int. Cong. Large Dams, Montreal, 587–597.
5.
Higgins, C. G. (1984). “Piping and sapping: development of landforms by goundwater outflow.” Groundwater as a geomorphic agent, R. G. LaFleur, ed., Allen and Unwin, Winchester, Mass.
6.
Higgins, C. G., et al. (1988). “Landform development.” The geology of North America, W. Back, J. S. Rosenhein, and P. R. Seaber, eds., The Geological Society of America, Inc., Boulder, Colo., 383–400.
7.
Howard, A. D., and McLane, C. F. III. (1988). “Erosion of cohensionless sediment by groundwater seepage.” Water Resour. Res., 24(10), 1659–1674.
8.
Iverson, R. M., and Major, J. J. (1986). “Groundwater seepage vectors and the potential for hillslope failure and debris flow mobilization.” Water Resour. Res., 22(11), 1543–1548.
9.
Lambe, T. W., and Whitman, R. V. (1979). Soil mechanics. John Wiley and Sons, New York, N.Y.
10.
Lavelle, J. W., and Mofjeld, H. O. (1987). “Do critical stresses for incipient motion really exist?” J. Hydr. Engrg., 113(3), 370–385.
11.
Martin, R. (1991). “Principles of rockfill hydraulics.” Advances in rockfill structures, E. Maranha das Neves, ed., NATO ASI Series, Series E, 200.
12.
Martin, C. S., and Aral, M. M. (1971). “Seepage force on interfacial bed particles.” J. Hydr. Div., 97(7), 1081–1100.
13.
Olivier, H. (1967). “Through and overflow rockfill dams—new design techniques.” Proc. Inst. of Civ. Engrs., London, 36, 433–471.
14.
Parkin, A. K. (1991). “Through and overflow rockfill dams.” Advances in rockfill structures. Maranha das Neves, ed., NATO ASI Series, Series E, 200, Klurer Academic Publishers, Dordrecht, Netherlands, 571–592.
15.
Solvik, Ø. (1982). “Safe remedies for leaking embankment dams.” Int. Congress on Large Dams, Q52, R78, Rio de Janeiro, 1361–1366.
16.
Stephenson, D. (1979). “Rockfill in hydraulic engineering.” Developments in geotechnical engineering, Elsevier Publishing, New York, N.Y.
17.
Taylor, D. W. (1948). Fundamentals of soil mechanics. John Wiley and Sons, New York, N.Y.
18.
Taylor, B. D., and Vanoni, V. A. (1972). “Temperature effects in low‐transport, flat‐bed flows.” J. Hydr. Div., 98(8), 1427–1445.
19.
Ulrich. (1987). “Stability of rock protection on slopes.” J. Hydr. Engrg., 113(7), 879–891.
20.
Vanoni, V. A. (1975). “Sedimentation engineering.” ASCE manuals and reports on engineering practice, 54, ASCE, New York, N.Y.
21.
Wilcock, P. R. (1988). “Methods for estimating the critical shear stress of individual fractions in mixed‐size sediments.” Water Resour. Res., 24(7), 1127–1135.
22.
Wörman, A. (1992). “Stability of embankments subjected to extreme throughflow.” Report VU‐H‐93.F1, Vattenfall Utveckling AB, Alvkarleby, Sweden.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 119 • Issue 10 • October 1993
Pages: 1155 - 1168
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: Feb 18, 1992
Published online: Oct 1, 1993
Published in print: Oct 1993
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