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Paper Information

Journal:   WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE)   SUMMER 2012 , Volume 22 , Number 2; Page(s) 107 To 119.
 
Paper: 

EFFECT OF HORIZONTAL DRAIN ON THE STABILITY OF HOMOGENEOUS EARTH DAM UNDER RAPID DRAWDOWN CONDITIONS

 
 
Author(s):  MALEKPOUR A.*, FARSADIZADEH D., HOSEINZADE DALIR A., SADR KARIMI J.
 
* DEPT. OF WATER ENGIN., FACULTY OF AGRIC., UNIV. OF GILAN, IRAN
 
Abstract: 

In earth dams, the rapid drawdown process creates a pressure gradient between the embankment and reservoir. This pressure gradient which is due to the temporal delay that is required for dissipating excessive pore water pressure existing in the upstream slope, may let the upstream slope to be prone to failure. In this research, the effect of length and thickness (of horizontal drain) on upstream slope stability under rapid drawdown conditions were considered in a model of homogeneous earth dam. The factor of safety for different drain dimensions immediately after drawdown ranged within 1.5-2.6 and 1.3-2.2 for superficial and deep slips, respectively, and increased with time to 2-3 and 2.2-3 for the drain with maximum effective length and thickness. Moreover, for drawdown ratio of less than 0.3, drain with the length ratio (drain length to water depth in reservoir) of 0.43 assured the stability. For the greater ratios of drawdown, drain length ratio of 0.71 with medium thickness provided the stability against sliding.

 
Keyword(s): HOMOGENEOUS EARTH DAM, HORIZONTAL DRAIN, PORE WATER PRESSURE, RAPID DRAWDOWN, SAFETY FACTOR
 
 
References: 
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Citations: 
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+ Click to Cite.
APA: Copy

MALEKPOUR, A., & FARSADIZADEH, D., & HOSEINZADE DALIR, A., & SADR KARIMI, J. (2012). EFFECT OF HORIZONTAL DRAIN ON THE STABILITY OF HOMOGENEOUS EARTH DAM UNDER RAPID DRAWDOWN CONDITIONS. WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE), 22(2), 107-119. https://www.sid.ir/en/journal/ViewPaper.aspx?id=277002



Vancouver: Copy

MALEKPOUR A., FARSADIZADEH D., HOSEINZADE DALIR A., SADR KARIMI J.. EFFECT OF HORIZONTAL DRAIN ON THE STABILITY OF HOMOGENEOUS EARTH DAM UNDER RAPID DRAWDOWN CONDITIONS. WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE). 2012 [cited 2021August02];22(2):107-119. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=277002



IEEE: Copy

MALEKPOUR, A., FARSADIZADEH, D., HOSEINZADE DALIR, A., SADR KARIMI, J., 2012. EFFECT OF HORIZONTAL DRAIN ON THE STABILITY OF HOMOGENEOUS EARTH DAM UNDER RAPID DRAWDOWN CONDITIONS. WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE), [online] 22(2), pp.107-119. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=277002.



 
 
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