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Experimental identification on thresholds for early warning of rainfall-induced failure on fractured slopes after giant earthquake

Prevention and mitigation of rainfall induced geological hazards after the Ms=8 Wenchuan earthquake on May 12th, 2008 were significant for rebuild of earthquake hit regions. After the Wenchuan earthquake, there were tens of thousands of fractured slopes which were broken and loosened by the ground s...

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Main Authors: Yang, Zong-Ji, Qiao, Jian-Ping, Huang, Dong, Uchimura, Taro, Wang, Lin
Format: Article
Language:English
Published: Penerbit Universiti Kebangsaan Malaysia 2017
Online Access:http://journalarticle.ukm.my/11668/1/02%20SM46%2011.pdf
http://journalarticle.ukm.my/11668/
http://www.ukm.my/jsm/english_journals/vol46num11_2017/contentsVol46num11_2017.htm
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spelling my-ukm.journal.116682018-05-28T00:22:48Z http://journalarticle.ukm.my/11668/ Experimental identification on thresholds for early warning of rainfall-induced failure on fractured slopes after giant earthquake Yang, Zong-Ji Qiao, Jian-Ping Huang, Dong Uchimura, Taro Wang, Lin Prevention and mitigation of rainfall induced geological hazards after the Ms=8 Wenchuan earthquake on May 12th, 2008 were significant for rebuild of earthquake hit regions. After the Wenchuan earthquake, there were tens of thousands of fractured slopes which were broken and loosened by the ground shaking, they were very susceptible to heavy rainfall and change forms into potential debris flows. In order to carry out this disaster reduction and prediction effectively in Longmenshan region, careful real-time monitoring and pre-warning of mountain hazards in both regional and site-specific scales is reasonable as alternatives in Wenchuan earthquake regions. For pre-warning the failure of fractured slopes induced by rainfall, the threshold value or the critical value of the precipitation of hazards should be proposed. However, the identification of critical criterion and parameters to pre-warning is the most difficult issue in mountainous hazards monitoring and pre-warning system especially in the elusive and massive fractured slopes widespread in Wenchuan earthquake regions. In this study, a natural coseismic fractured landslide in the Taziping village, Hongkou County, Dujianyan City, was selected to conduct the field experimental test, in order to identify the threshold parameters and critical criterion of the fractured slopes of Taziping. After the field experimental test, the correlation of rainfall intensity, rainfall duration and accumulative rainfall was investigated. The field experimental test was capable of identifying the threshold factors for failure of rainfall-induced fractured slopes after the giant earthquake. Penerbit Universiti Kebangsaan Malaysia 2017-11 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/11668/1/02%20SM46%2011.pdf Yang, Zong-Ji and Qiao, Jian-Ping and Huang, Dong and Uchimura, Taro and Wang, Lin (2017) Experimental identification on thresholds for early warning of rainfall-induced failure on fractured slopes after giant earthquake. Sains Malaysiana, 46 (11). pp. 2029-2034. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol46num11_2017/contentsVol46num11_2017.htm
institution Universiti Kebangsaan Malaysia
building Perpustakaan Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
language English
description Prevention and mitigation of rainfall induced geological hazards after the Ms=8 Wenchuan earthquake on May 12th, 2008 were significant for rebuild of earthquake hit regions. After the Wenchuan earthquake, there were tens of thousands of fractured slopes which were broken and loosened by the ground shaking, they were very susceptible to heavy rainfall and change forms into potential debris flows. In order to carry out this disaster reduction and prediction effectively in Longmenshan region, careful real-time monitoring and pre-warning of mountain hazards in both regional and site-specific scales is reasonable as alternatives in Wenchuan earthquake regions. For pre-warning the failure of fractured slopes induced by rainfall, the threshold value or the critical value of the precipitation of hazards should be proposed. However, the identification of critical criterion and parameters to pre-warning is the most difficult issue in mountainous hazards monitoring and pre-warning system especially in the elusive and massive fractured slopes widespread in Wenchuan earthquake regions. In this study, a natural coseismic fractured landslide in the Taziping village, Hongkou County, Dujianyan City, was selected to conduct the field experimental test, in order to identify the threshold parameters and critical criterion of the fractured slopes of Taziping. After the field experimental test, the correlation of rainfall intensity, rainfall duration and accumulative rainfall was investigated. The field experimental test was capable of identifying the threshold factors for failure of rainfall-induced fractured slopes after the giant earthquake.
format Article
author Yang, Zong-Ji
Qiao, Jian-Ping
Huang, Dong
Uchimura, Taro
Wang, Lin
spellingShingle Yang, Zong-Ji
Qiao, Jian-Ping
Huang, Dong
Uchimura, Taro
Wang, Lin
Experimental identification on thresholds for early warning of rainfall-induced failure on fractured slopes after giant earthquake
author_facet Yang, Zong-Ji
Qiao, Jian-Ping
Huang, Dong
Uchimura, Taro
Wang, Lin
author_sort Yang, Zong-Ji
title Experimental identification on thresholds for early warning of rainfall-induced failure on fractured slopes after giant earthquake
title_short Experimental identification on thresholds for early warning of rainfall-induced failure on fractured slopes after giant earthquake
title_full Experimental identification on thresholds for early warning of rainfall-induced failure on fractured slopes after giant earthquake
title_fullStr Experimental identification on thresholds for early warning of rainfall-induced failure on fractured slopes after giant earthquake
title_full_unstemmed Experimental identification on thresholds for early warning of rainfall-induced failure on fractured slopes after giant earthquake
title_sort experimental identification on thresholds for early warning of rainfall-induced failure on fractured slopes after giant earthquake
publisher Penerbit Universiti Kebangsaan Malaysia
publishDate 2017
url http://journalarticle.ukm.my/11668/1/02%20SM46%2011.pdf
http://journalarticle.ukm.my/11668/
http://www.ukm.my/jsm/english_journals/vol46num11_2017/contentsVol46num11_2017.htm
_version_ 1643738566521520128
score 13.211869

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