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Rockfall Hazard Analyses and Rockfall Protection along the Adriatic Coast of Croatia

Journal of Civil Engineering and Architecture 2012年第3期6卷 344-355页

作者： zeljko arbanas Mirko Grosic Dalibor Udovic Snjezana Mihalie Department of Hydrotechnics and Geotechnics Faculty of Civil Engineering University of Rijeka Rijeka (RI) 51000 Croatia Geotech Ltd. Rijeka (RI) 51000 Croatia Department of Geology and Geological Engineering Faculty of Mining Geology and Petroleum Engineering University of ZagrebZagreb (ZG) 10000 Croatia

During the last decade, large rockfalls occurred on the steep limestone slopes along the Adriatic Coast of Croatia, causing injury to people and serious damage to buildings and traffic facilities. The rockfalls along the limestone slopes were caused by unfavorable characteristics of the rock mass, weathering in combination with heavy rainfall and artificial influences during highway construction. Rockfall protection projects were conducted to protect human lives and facilities from future rockfalls. The rockfall protection program started with rockfall hazard analyses to identify the potential of rockfalls to occur and the potential consequences. At the locations of hazards where related risks were determined, detailed field investigations were conducted. Based on the indentified characteristics of potentially unstable rock masses, analyses of movement and resulting pathways were conducted. The trajectories, impact energy and the height of bouncing are dependent on slope geometry, slope surface roughness and rockfall block characteristics. Two protection measure approaches were adopted: prevention of rockfalls by removing potentially unstable rock mass or installation of rock mass support systems and suspending running rockfall masses with rockfall protection barriers. In this paper, rockfall hazard determination, rockfall analyses and rockfall protection designs for rockfall protection systems at selected locations on the limestone slopes along the Adriatic coast of Croatia are presented.

关键词：危险性分析亚得里亚海克罗地亚防护工程落石沿岸不稳定岩体保护措施

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