Effect, Causes, and Possible Measure of Landslide in Bangladesh (Chittagong)
Engineering Science
Volume 3, Issue 4, December 2018, Pages: 58-63
Received: Dec. 20, 2018; Accepted: Jan. 9, 2019; Published: Jan. 29, 2019
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Mohammad Shariful Islam, Department of Civil Engineering, Rajshahi University of Engineering and Technology, Rajshahi, Bangladesh
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Bangladesh is a densely populated developing country. Landslide is a regular geologic hazard in Bangladesh, specially urbanized hilly areas in Chittagong. Generally, the hills consist of unconsolidated sedimentary rocks such as sandstone, siltstone, shale and conglomerate. it is observed that soil characteristic of Chittagong Hill Tracts is alluvial, silty clay which is vulnerable to landslides. At least 141 people, were killed in separate series of landslides triggered by heavy rains in Rangamati, Bandar ban, and Chittagong on June 13, 2017. The losses have been monumental, and officials fear that the death toll may rise even further in the worst landslide since 2007, when a landslide resulted in the death of around 130 people and affected 1.5 million people in the region. It is disheartening that despite the occurrence of such disasters in the past, we have learnt little from our experiences. This paper mainly discusses the causes and impact of landslides and possible measures that can be taken to prevent future landslides. Southwest monsoon flows over the Bay of Bengal, heading towards northeast India and Bangladesh picking up more moisture from the Bay from June through September. The winds arrive at the Eastern Himalayas with large amounts of rain. Bangladesh and certain regions of India frequently experience heavy rains during this season, and most landslides occur after heavy rainfall. The main reasons identified for landslide were hill cutting ,weak soil structure and devegetation The major impacts of landslide on the local communities, as reported by the respondents were loss of natural scenic beauty economic loss destruction of lives and environmental problems . It is suggested to implement some new and modified structural measures such as vegetation with jute geo-textile can significantly improve the stability of hill slopes.
Chittagong, Landslide, Hill-Cutting, Soil Structure, Heavy Rainfall, Slope Stability
To cite this article
Mohammad Shariful Islam, Effect, Causes, and Possible Measure of Landslide in Bangladesh (Chittagong), Engineering Science. Vol. 3, No. 4, 2018, pp. 58-63. doi: 10.11648/j.es.20180304.14
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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