Cover Image

Rock toppling assessment at Mugling-Narayanghat road section: a case study from Mauri Khola landslide, Nepal

Mugling–Narayanghat road section in Nepal has suffered from a variety of slope failure including rockslides, rock topples, debris slide/flow, and some combination of these. Based on the prominent type of failure, the highway can be divided into three sections (a) Ch10 to Ch17 (dominated by shallow l...

Full description

Saved in:
Bibliographic Details
Main Authors: Regmi, Amar Deep, Yoshida, Kohki, Nagata, Hidehisa, Pradhan, Biswajeet
Format: Article
Published: Elsevier 2014
Online Access:http://psasir.upm.edu.my/id/eprint/35290/
http://www.sciencedirect.com/science/article/pii/S0341816213002579
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.upm.eprints.35290
record_format eprints
spelling my.upm.eprints.352902015-12-31T04:58:49Z http://psasir.upm.edu.my/id/eprint/35290/ Rock toppling assessment at Mugling-Narayanghat road section: a case study from Mauri Khola landslide, Nepal Regmi, Amar Deep Yoshida, Kohki Nagata, Hidehisa Pradhan, Biswajeet Mugling–Narayanghat road section in Nepal has suffered from a variety of slope failure including rockslides, rock topples, debris slide/flow, and some combination of these. Based on the prominent type of failure, the highway can be divided into three sections (a) Ch10 to Ch17 (dominated by shallow landslides and debris slides/flows), (b) Ch17 to Ch28 (dominated by large-scale, deep-seated landslides), and (c) Ch28 to Ch35 (dominated by rock topples). Rock topples are frequently observed along the highway, mainly on both the limbs of Jalbire Syncline as well as at the upstream of Maure Khola and some in Siwaliks. Slates, phyllites, quartzite, amphibolite and sandstones are affected by these topples. The Maure Khola landslide that is highly affected by rock toppling falls in Nourpoul Formation and consists of amphibolite, quartzite, and slate/phyllite. It lies at the upper reach of the Simaltal Thrust. Steep slopes characterize the upper slope, whose base is covered by thick debris forming a huge debris fan. According to the selected methodological approaches, data from detailed geological, geomorphological and geomechanical surveys, it is clear that these topples are mainly related to the geological structures of the region. Additionally, the landslide contains several sheared zones where the rocks are considerably weathered. These sheared zones act as the sliding plane. Also, the debris fan at the lower part suggests that the landslide has been reactivated several times in the past. Furthermore, it is seen that flexural toppling occurs in weak, mica-rich slate/phyllite at the upper slope, while block toppling is prominent in stronger amphibolites and quartzite lying in the central part. Elsevier 2014-03 Article PeerReviewed Regmi, Amar Deep and Yoshida, Kohki and Nagata, Hidehisa and Pradhan, Biswajeet (2014) Rock toppling assessment at Mugling-Narayanghat road section: a case study from Mauri Khola landslide, Nepal. Catena, 114. pp. 67-77. ISSN 0341-8162; ESSN: 1872-6887 http://www.sciencedirect.com/science/article/pii/S0341816213002579 10.1016/j.catena.2013.10.013
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description Mugling–Narayanghat road section in Nepal has suffered from a variety of slope failure including rockslides, rock topples, debris slide/flow, and some combination of these. Based on the prominent type of failure, the highway can be divided into three sections (a) Ch10 to Ch17 (dominated by shallow landslides and debris slides/flows), (b) Ch17 to Ch28 (dominated by large-scale, deep-seated landslides), and (c) Ch28 to Ch35 (dominated by rock topples). Rock topples are frequently observed along the highway, mainly on both the limbs of Jalbire Syncline as well as at the upstream of Maure Khola and some in Siwaliks. Slates, phyllites, quartzite, amphibolite and sandstones are affected by these topples. The Maure Khola landslide that is highly affected by rock toppling falls in Nourpoul Formation and consists of amphibolite, quartzite, and slate/phyllite. It lies at the upper reach of the Simaltal Thrust. Steep slopes characterize the upper slope, whose base is covered by thick debris forming a huge debris fan. According to the selected methodological approaches, data from detailed geological, geomorphological and geomechanical surveys, it is clear that these topples are mainly related to the geological structures of the region. Additionally, the landslide contains several sheared zones where the rocks are considerably weathered. These sheared zones act as the sliding plane. Also, the debris fan at the lower part suggests that the landslide has been reactivated several times in the past. Furthermore, it is seen that flexural toppling occurs in weak, mica-rich slate/phyllite at the upper slope, while block toppling is prominent in stronger amphibolites and quartzite lying in the central part.
format Article
author Regmi, Amar Deep
Yoshida, Kohki
Nagata, Hidehisa
Pradhan, Biswajeet
spellingShingle Regmi, Amar Deep
Yoshida, Kohki
Nagata, Hidehisa
Pradhan, Biswajeet
Rock toppling assessment at Mugling-Narayanghat road section: a case study from Mauri Khola landslide, Nepal
author_facet Regmi, Amar Deep
Yoshida, Kohki
Nagata, Hidehisa
Pradhan, Biswajeet
author_sort Regmi, Amar Deep
title Rock toppling assessment at Mugling-Narayanghat road section: a case study from Mauri Khola landslide, Nepal
title_short Rock toppling assessment at Mugling-Narayanghat road section: a case study from Mauri Khola landslide, Nepal
title_full Rock toppling assessment at Mugling-Narayanghat road section: a case study from Mauri Khola landslide, Nepal
title_fullStr Rock toppling assessment at Mugling-Narayanghat road section: a case study from Mauri Khola landslide, Nepal
title_full_unstemmed Rock toppling assessment at Mugling-Narayanghat road section: a case study from Mauri Khola landslide, Nepal
title_sort rock toppling assessment at mugling-narayanghat road section: a case study from mauri khola landslide, nepal
publisher Elsevier
publishDate 2014
url http://psasir.upm.edu.my/id/eprint/35290/
http://www.sciencedirect.com/science/article/pii/S0341816213002579
_version_ 1643831409634181120
score 13.211869

Similar Items