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On the importance of landslide management: Insights from a 32-year database of landslide consequences and rainfall in Hong Kong
Yang, Hao Qing1,2,3,4; Zhang, Lulu1,2,3; Gao, Liang4,5; Phoon, Kok Kwang6; Wei, Xiao6,7
2022-03-20
Source PublicationEngineering Geology
ISSN0013-7952
Volume299
Abstract

Social and economic losses induced by landslides can be reduced by means of effective planning and management. A series of landslide management projects have been implemented for landslide risk reduction since 1977 in Hong Kong. The effectiveness of the landslide management projects needs to be quantified to promote the experience for decision-making. In this study, a database of landslide-induced consequences in Hong Kong from 1984 to 2015 is first compiled. Then the effectiveness of landslide management projects in Hong Kong is evaluated from the implications of the relationship between rainfall and landslide consequences. A new method is proposed to detect the turning years for the management projects by evaluating the coefficient of variation (COV) of dissimilarity. The results are compared to the implementations of landslide management projects in Hong Kong and further verified by the consequences caused by 6 types of slopes. The landslide posed high risks before 2009 and exhibited a decreasing trend. After 2009, the landslide-induced consequences became very small. The years 1992, 2000, and 2008 are identified as the key turning years for landslide management using the proposed method. The landslide management projects work effectively when launched about every eight years. The turning years detected based on proximity of rainfall and landslide-induced consequences agree well with the timings of management projects. The initial Landslip Prevention Measures Programme (LPMP) launched in 1977 might have already reached its limit in 1992. More effort should be put into preventing landslide-caused road failures.

KeywordHong Kong Landslide Consequences Landslide Management Proximity Rainfall Risk
DOI10.1016/j.enggeo.2022.106578
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000792001300003
Scopus ID2-s2.0-85125182211
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionTHE STATE KEY LABORATORY OF INTERNET OF THINGS FOR SMART CITY (UNIVERSITY OF MACAU)
Corresponding AuthorGao, Liang
Affiliation1.State Key Laboratory of Ocean Engineering, Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai, China
2.Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration (CISSE), Shanghai, China
3.Shanghai Key Laboratory for Digital Maintenance of Buildings and Infrastructure, Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai, China
4.The State Key Laboratory of the Internet of Things for Smart City, University of Macau, Macau, Macao
5.Center for Ocean Research in Hong Kong and Macau (CORE), Macao, Macao
6.Department of Civil and Environmental Engineering, National University of Singapore, Singapore
7.Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou, China
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Yang, Hao Qing,Zhang, Lulu,Gao, Liang,et al. On the importance of landslide management: Insights from a 32-year database of landslide consequences and rainfall in Hong Kong[J]. Engineering Geology,2022,299.
APA Yang, Hao Qing,Zhang, Lulu,Gao, Liang,Phoon, Kok Kwang,&Wei, Xiao.(2022).On the importance of landslide management: Insights from a 32-year database of landslide consequences and rainfall in Hong Kong.Engineering Geology,299.
MLA Yang, Hao Qing,et al."On the importance of landslide management: Insights from a 32-year database of landslide consequences and rainfall in Hong Kong".Engineering Geology 299(2022).
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