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Numerical investigation of capillary barrier performance with transport layer

Yunusa, Gambo Haruna and Kassim, Azman and Abu Talib, Zaihasra (2015) Numerical investigation of capillary barrier performance with transport layer. In: 1st International Conference on Science, Engineering, and the Social Sciences, 11-13 May, 2015, Johor Bahru, Johor.

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Abstract

A capillary barrier is a promising alternative measure for controlling rainfall infiltration in unsaturated residual soil slopes. Although, capillary barriers have been successfully applied to avert rainfall infiltration in dry and semi-dry climates, its application in humid climates with high precipitation rate is still unsatisfactory. Therefore, this paper evaluates the performance of modified capillary barrier with transport layer under humid climates. The capillary barrier was simulated with Grade V and Grade VI soil and the transport layer was made with gravel material. The complete slope model was subjected to a 24-hour rainfall intensity of 14.6 mm/hr using saturated/unsaturated seepage analysis software (Seep/W). The results show that the diversion length and breakthrough time were greatly improved in the modified capillary barrier with transport layer than the conventional capillary barrier system. Therefore, the inclusion of transport layer in a residual soil capillary barrier improved its performance.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:capillary barrier, transport layer
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Civil Engineering
ID Code:62096
Deposited By: Widya Wahid
Deposited On:09 May 2017 07:16
Last Modified:08 Aug 2017 07:01

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