Present practices and emerging opportunities in bioengineering for slope stabilization in Malaysia: An overview
Population increase and the demand for infrastructure development such as construction of highways and road widening are intangible, leading up to mass land clearing. As flat terrains become scarce, infrastructure expansions have moved on to hilly terrains, cutting through slopes and forests. Unvege...
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my.um.eprints.268902022-04-28T05:54:13Z http://eprints.um.edu.my/26890/ Present practices and emerging opportunities in bioengineering for slope stabilization in Malaysia: An overview Dorairaj, Deivaseeno Osman, Normaniza QH301 Biology Population increase and the demand for infrastructure development such as construction of highways and road widening are intangible, leading up to mass land clearing. As flat terrains become scarce, infrastructure expansions have moved on to hilly terrains, cutting through slopes and forests. Unvegetated or bare slopes are prone to erosion due to the lack of or insufficient surface cover. The combination of exposed slope, uncontrolled slope management practices, poor slope planning and high rainfall as in Malaysia could steer towards slope failures which then results in landslides under acute situation. Moreover, due to the tropical weather, the soils undergo intense chemical weathering and leaching that elevates soil erosion and surface runoff. Mitigation measures are vital to address slope failures as they lead to economic loss and loss of lives. Since there is minimal or limited information and investigations on slope stabilization methods in Malaysia, this review deciphers into the current slope management practices such as geotextiles, brush layering, live poles, rock buttress and concrete structures. However, these methods have their drawbacks. Thus, as a way forward, we highlight the potential application of soil bioengineering methods especially on the use of whole plants. Here, we discuss the general attributions of a plant in slope stabilization including its mechanical, hydrological and hydraulic effects. Subsequently, we focus on species selection, and engineering properties of vegetation especially rooting structures and architecture. Finally, the review will dissect and assess the ecological principles for vegetation establishment with an emphasis on adopting the mix-culture approach as a slope failure mitigation measure. Nevertheless, the use of soil bioengineering is limited to low to moderate risk slopes only, while in high-risk slopes, the use of traditional engineering measure is deemed more appropriate and remain to be the solution for slope stabilization. PeerJ 2021-01-12 Article PeerReviewed Dorairaj, Deivaseeno and Osman, Normaniza (2021) Present practices and emerging opportunities in bioengineering for slope stabilization in Malaysia: An overview. PeerJ, 9. ISSN 2167-8359, DOI https://doi.org/10.7717/peerj.10477 <https://doi.org/10.7717/peerj.10477>. 10.7717/peerj.10477 |
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QH301 Biology Dorairaj, Deivaseeno Osman, Normaniza Present practices and emerging opportunities in bioengineering for slope stabilization in Malaysia: An overview |
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Population increase and the demand for infrastructure development such as construction of highways and road widening are intangible, leading up to mass land clearing. As flat terrains become scarce, infrastructure expansions have moved on to hilly terrains, cutting through slopes and forests. Unvegetated or bare slopes are prone to erosion due to the lack of or insufficient surface cover. The combination of exposed slope, uncontrolled slope management practices, poor slope planning and high rainfall as in Malaysia could steer towards slope failures which then results in landslides under acute situation. Moreover, due to the tropical weather, the soils undergo intense chemical weathering and leaching that elevates soil erosion and surface runoff. Mitigation measures are vital to address slope failures as they lead to economic loss and loss of lives. Since there is minimal or limited information and investigations on slope stabilization methods in Malaysia, this review deciphers into the current slope management practices such as geotextiles, brush layering, live poles, rock buttress and concrete structures. However, these methods have their drawbacks. Thus, as a way forward, we highlight the potential application of soil bioengineering methods especially on the use of whole plants. Here, we discuss the general attributions of a plant in slope stabilization including its mechanical, hydrological and hydraulic effects. Subsequently, we focus on species selection, and engineering properties of vegetation especially rooting structures and architecture. Finally, the review will dissect and assess the ecological principles for vegetation establishment with an emphasis on adopting the mix-culture approach as a slope failure mitigation measure. Nevertheless, the use of soil bioengineering is limited to low to moderate risk slopes only, while in high-risk slopes, the use of traditional engineering measure is deemed more appropriate and remain to be the solution for slope stabilization. |
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Article |
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Dorairaj, Deivaseeno Osman, Normaniza |
author_facet |
Dorairaj, Deivaseeno Osman, Normaniza |
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Dorairaj, Deivaseeno |
title |
Present practices and emerging opportunities in bioengineering for slope stabilization in Malaysia: An overview |
title_short |
Present practices and emerging opportunities in bioengineering for slope stabilization in Malaysia: An overview |
title_full |
Present practices and emerging opportunities in bioengineering for slope stabilization in Malaysia: An overview |
title_fullStr |
Present practices and emerging opportunities in bioengineering for slope stabilization in Malaysia: An overview |
title_full_unstemmed |
Present practices and emerging opportunities in bioengineering for slope stabilization in Malaysia: An overview |
title_sort |
present practices and emerging opportunities in bioengineering for slope stabilization in malaysia: an overview |
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PeerJ |
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2021 |
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http://eprints.um.edu.my/26890/ |
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