Landslide risk evaluation and hazard zoning for rapid and long-travel landslides in urban development areas
Landslide risk evaluation and hazard zoning for rapid and long-travel landslides in urban development areas
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DOI：
10.1007/s10346-004-0028-y
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发表时间：
2004-08
期刊：
影响因子：
6.7
通讯作者：
K. Sassa;Gong-hui Wang;H. Fukuoka;Fawu Wang;Takahiro Ochiai;M. Sugiyama;T. Sekiguchi
中科院分区：
文献类型：
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作者：
K. Sassa;Gong-hui Wang;H. Fukuoka;Fawu Wang;Takahiro Ochiai;M. Sugiyama;T. Sekiguchi
人口密集城市地区地震诱发的快速和长距离滑坡的风险评估是目前世界各地滑坡威胁地区最重要的减灾任务。IPL M-101 APERITIF项目的研究成果应用于日本特大城市的两个城区。一个地点位于尼川滑坡现场的上斜坡，1995年兵库县南部地震引发了以前的运动。在详细调查期间，发现该斜坡有可能受到规模与1995年地震相似的地震引起的滑动面液化引起的快速和长距离滑坡的威胁。提出了防止这种现象发生的新计划，并实施了该计划。另一个地区是东京附近的多摩住宅区。一系列现场和实验室调查，包括激光扫描仪，地质钻探和环剪试验表明，这两个网站有滑动面液化的风险。一个岩土计算机模拟（快速/LS）使用的定量数据，在研究中允许城市滑坡危险区划在个别街道的水平。
Risk evaluation for earthquake-induced rapid and long-travel landslides in densely populated urban areas is currently the most important disaster mitigation task in landslide-threatened areas throughout the world. The research achievements of the IPL M-101 APERITIF project were applied to two urban areas in megacities of Japan. One site is in the upper slope of the Nikawa landslide site where previous movements were triggered by the 1995 Hyogoken-Nambu earthquake. During detailed investigation, the slope was found to be at risk from a rapid and long-travel landslide induced by sliding surface liquefaction by earthquakes similar in scale to the 1995 event. A new plan to prevent the occurrence of this phenomenon was proposed and the plan was implemented. Another area is the Tama residential area near Tokyo. A set of field and laboratory investigations including laser scanner, geological drilling and ring-shear tests showed that there was a risk of sliding surface liquefaction for both sites. A geotechnical computer simulation (Rapid/LS) using the quantitative data obtained in the study allowed urban landslide hazard zoning to be made at individual street level.