Study of horizontal drain effect on slope stability

Muhammad Mukhlisin, Nurul Aini Binti Abd Aziz

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Slope failure usually occurs when soil particles are unable to build a strong bond with each other and become loose because of the presence of water. Water pressure weakens the ties between the particles and they tend to slip. Therefore, this study focused on the use of horizontal drains to reduce water entry and control the ground water level as a method of slope stabilization. Several previous studies have shown that the use of horizontal drains to lower the water level in soil is one of the fastest and cheapest slope stabilization methods. The main objective of this study is to analyze the effect of horizontal drains on slope stability. Information on slope condition during the landslides which happened at Precinct 9, Putrajaya, Malaysia was used for analytical simulation. Seep/W and Slope/W analyses were carried out with GeoStudio version 2007 software. Slopes with and without horizontal drains were then compared in terms of groundwater level and factor of safety (FOS) values. Scenarios were created for seven types of soil namely: residual, clay, silt, loam, sandy loam, sandy clay loam, and silt clay loam for a case wise analysis. The effect of daily steady rainfall and realcondition rainfall was studied. These cases were studied to find the effectiveness of horizontal drains as a slope stabilization tool. The results revealed that when a drain was installed on a slope, the groundwater level dropped immediately and the safety factor of the slope increased. Sandy loam (sL) soil was identified as the best candidate for a horizontal drain. Its highly saturated hydraulic conductivity Ks facilitated groundwater drain through the horizontal drain effectively. Silt clay loam (scL) soil was identified as the least effective candidate.

Original languageEnglish
Pages (from-to)483-490
Number of pages8
JournalJournal of the Geological Society of India
Volume87
Issue number4
DOIs
Publication statusPublished - 1 Apr 2016
Externally publishedYes

Fingerprint

slope stability
drain
slope stabilization
silt
groundwater
clay loam
sandy loam
water level
safety
effect
sandy clay loam
rainfall
residual soil
soil
slope failure
loam
water
hydraulic conductivity
landslide
software

Keywords

  • Factor of Safety (FOS)
  • Groundwater Table
  • Horizontal Drain
  • Seep/W
  • Slope Stability
  • Slope/W

ASJC Scopus subject areas

  • Geology

Cite this

Study of horizontal drain effect on slope stability. / Mukhlisin, Muhammad; Aziz, Nurul Aini Binti Abd.

In: Journal of the Geological Society of India, Vol. 87, No. 4, 01.04.2016, p. 483-490.

Research output: Contribution to journalArticle

Mukhlisin, Muhammad ; Aziz, Nurul Aini Binti Abd. / Study of horizontal drain effect on slope stability. In: Journal of the Geological Society of India. 2016 ; Vol. 87, No. 4. pp. 483-490.
@article{93879f7eff8345d6aefe35a909a95959,
title = "Study of horizontal drain effect on slope stability",
abstract = "Slope failure usually occurs when soil particles are unable to build a strong bond with each other and become loose because of the presence of water. Water pressure weakens the ties between the particles and they tend to slip. Therefore, this study focused on the use of horizontal drains to reduce water entry and control the ground water level as a method of slope stabilization. Several previous studies have shown that the use of horizontal drains to lower the water level in soil is one of the fastest and cheapest slope stabilization methods. The main objective of this study is to analyze the effect of horizontal drains on slope stability. Information on slope condition during the landslides which happened at Precinct 9, Putrajaya, Malaysia was used for analytical simulation. Seep/W and Slope/W analyses were carried out with GeoStudio version 2007 software. Slopes with and without horizontal drains were then compared in terms of groundwater level and factor of safety (FOS) values. Scenarios were created for seven types of soil namely: residual, clay, silt, loam, sandy loam, sandy clay loam, and silt clay loam for a case wise analysis. The effect of daily steady rainfall and realcondition rainfall was studied. These cases were studied to find the effectiveness of horizontal drains as a slope stabilization tool. The results revealed that when a drain was installed on a slope, the groundwater level dropped immediately and the safety factor of the slope increased. Sandy loam (sL) soil was identified as the best candidate for a horizontal drain. Its highly saturated hydraulic conductivity Ks facilitated groundwater drain through the horizontal drain effectively. Silt clay loam (scL) soil was identified as the least effective candidate.",
keywords = "Factor of Safety (FOS), Groundwater Table, Horizontal Drain, Seep/W, Slope Stability, Slope/W",
author = "Muhammad Mukhlisin and Aziz, {Nurul Aini Binti Abd}",
year = "2016",
month = "4",
day = "1",
doi = "10.1007/s12594-016-0417-6",
language = "English",
volume = "87",
pages = "483--490",
journal = "Journal of the Geological Society of India",
issn = "0016-7622",
publisher = "Geological Society of India",
number = "4",

}

TY - JOUR

T1 - Study of horizontal drain effect on slope stability

AU - Mukhlisin, Muhammad

AU - Aziz, Nurul Aini Binti Abd

PY - 2016/4/1

Y1 - 2016/4/1

N2 - Slope failure usually occurs when soil particles are unable to build a strong bond with each other and become loose because of the presence of water. Water pressure weakens the ties between the particles and they tend to slip. Therefore, this study focused on the use of horizontal drains to reduce water entry and control the ground water level as a method of slope stabilization. Several previous studies have shown that the use of horizontal drains to lower the water level in soil is one of the fastest and cheapest slope stabilization methods. The main objective of this study is to analyze the effect of horizontal drains on slope stability. Information on slope condition during the landslides which happened at Precinct 9, Putrajaya, Malaysia was used for analytical simulation. Seep/W and Slope/W analyses were carried out with GeoStudio version 2007 software. Slopes with and without horizontal drains were then compared in terms of groundwater level and factor of safety (FOS) values. Scenarios were created for seven types of soil namely: residual, clay, silt, loam, sandy loam, sandy clay loam, and silt clay loam for a case wise analysis. The effect of daily steady rainfall and realcondition rainfall was studied. These cases were studied to find the effectiveness of horizontal drains as a slope stabilization tool. The results revealed that when a drain was installed on a slope, the groundwater level dropped immediately and the safety factor of the slope increased. Sandy loam (sL) soil was identified as the best candidate for a horizontal drain. Its highly saturated hydraulic conductivity Ks facilitated groundwater drain through the horizontal drain effectively. Silt clay loam (scL) soil was identified as the least effective candidate.

AB - Slope failure usually occurs when soil particles are unable to build a strong bond with each other and become loose because of the presence of water. Water pressure weakens the ties between the particles and they tend to slip. Therefore, this study focused on the use of horizontal drains to reduce water entry and control the ground water level as a method of slope stabilization. Several previous studies have shown that the use of horizontal drains to lower the water level in soil is one of the fastest and cheapest slope stabilization methods. The main objective of this study is to analyze the effect of horizontal drains on slope stability. Information on slope condition during the landslides which happened at Precinct 9, Putrajaya, Malaysia was used for analytical simulation. Seep/W and Slope/W analyses were carried out with GeoStudio version 2007 software. Slopes with and without horizontal drains were then compared in terms of groundwater level and factor of safety (FOS) values. Scenarios were created for seven types of soil namely: residual, clay, silt, loam, sandy loam, sandy clay loam, and silt clay loam for a case wise analysis. The effect of daily steady rainfall and realcondition rainfall was studied. These cases were studied to find the effectiveness of horizontal drains as a slope stabilization tool. The results revealed that when a drain was installed on a slope, the groundwater level dropped immediately and the safety factor of the slope increased. Sandy loam (sL) soil was identified as the best candidate for a horizontal drain. Its highly saturated hydraulic conductivity Ks facilitated groundwater drain through the horizontal drain effectively. Silt clay loam (scL) soil was identified as the least effective candidate.

KW - Factor of Safety (FOS)

KW - Groundwater Table

KW - Horizontal Drain

KW - Seep/W

KW - Slope Stability

KW - Slope/W

UR - http://www.scopus.com/inward/record.url?scp=84963877394&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84963877394&partnerID=8YFLogxK

U2 - 10.1007/s12594-016-0417-6

DO - 10.1007/s12594-016-0417-6

M3 - Article

VL - 87

SP - 483

EP - 490

JO - Journal of the Geological Society of India

JF - Journal of the Geological Society of India

SN - 0016-7622

IS - 4

ER -