IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 3: Water and Carbon: Climate Change Impact : Experimental study on effects of soil pipe on hillslope water dynamics and slope failure
Experimental study on effects of soil pipe on hillslope water dynamics and slope failure
Author : R.H Sharma and H. Konietzky
Soil pipes (porous pipes inside a hillslope) are often detected in collapsed slopes indicating their influence on slope failure. Flume tests were conducted to see the impact of soil pipes on a slope failure. Three different soil pipe configurations: a) no pipe, b) closed pipe and c) open pipe that are common in the field were conducted. Two types of tests were conducted for each of the pipe configurations: a) rainfall induced failure test and b) seepage induced failure tests. Experimental results show that a closed pipe accumulates water around its lower end and continuously increases pore-water pressure till a failure. Open pipes if are blocked, raises pore-water pressure more rapidly than other cases leading to immediate soil mass movement. This indicates the blockage of open soil pipes makes a slope more susceptible to a failure. The result also showed sudden increase in discharge before the slope failure. Such an increase in hillslope discharge can be taken as an indication of increment in potentiality of slope failure in real hillslopes. Before a large failure small fluctuations in pore water pressure were also seen in the experiments. This can also be used as an indicator of impending failure in an instrumented hillslopes.
File Size : 661,058 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 3: Water and Carbon: Climate Change Impact
Date Published : 01/07/2011
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