A case study on an open hillside landslide impacting on a flexible rockfall barrier at Jordan Valley, Hong Kong

被引:0
作者
J. S. H. Kwan
S. L. Chan
J. C. Y. Cheuk
R. C. H. Koo
机构
[1] Government of the Hong Kong Special Administrative Region,Geotechnical Engineering Office, Civil Engineering and Development Department
[2] The Hong Kong Polytechnic University,Department of Civil and Environmental Engineering
[3] AECOM,undefined
来源
Landslides | 2014年 / 11卷
关键词
Open hillside landslide; Jordan Valley; Flexible rockfall barrier; Flexible debris-resisting barriers;
D O I
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中图分类号
学科分类号
摘要
A case study on an open hillside landslide impacting on a flexible rockfall barrier at Jordan Valley, Hong Kong is presented in this paper. The landslide occurred sometime in June 2008. This is so far the only case history of landslide debris having been intercepted by a flexible rockfall barrier in Hong Kong. The landslide scar is 10 m wide and 7 m long, and the landslide volume is about 110 m3. The landslide debris was largely retained by the barrier but two of the barrier posts were severely damaged and failed. Debris mobility analysis and structural analysis of this case history have been undertaken with a view to obtaining a better understanding of the possible landslide dynamics and behaviour of flexible barrier upon debris impact. The analyses appear to have reproduced some of the salient field observations. The probable key contributory factors to the failure are highlighted and discussed. Through the study, the possible range of equivalent pseudo-static impact pressure exerted on the flexible barrier by the landslide debris is assessed. The site observations and results of the analyses provide insights pertaining to the importance of robustness in the design and detailing of flexible debris-resisting barriers.
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页码:1037 / 1050
页数:13
相关论文
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