• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Erosion Control Engineering >Debris Flow Flooding and Debris Deposition Considering the Effect of Houses: Disaster Verification and Numerical Simulation
【24h】

Debris Flow Flooding and Debris Deposition Considering the Effect of Houses: Disaster Verification and Numerical Simulation

机译：考虑房屋影响的泥石流泛滥和泥石沉积：灾害验证和数值模拟

获取原文
       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Debris flow causes flooding and sediment deposition when it reaches alluvial fans. Many houses have been constructed on alluvial fans, and this can affect debris flow flooding and deposition. In this study, we first conducted a field survey on recent debris flow disasters in Japan; one such disaster, the Izu Oshima sediment disaster, occurred in October 2013. Houses located upstream, in lower areas, and those facing small bridges and crossroads suffered greater damage than those located in other areas. Secondly, we performed numerical simulations using debris flow simulators (KANAKO 2D and Hyper KANAKO) to determine the effect of houses on debris flow flooding and deposition. For the simulations, grid points of the locations of houses were set taking into consideration the height of the houses from the ground elevation. We simulated typical debris flow condition and real disaster cases. The simulation results showed that when houses are present, the spread of debris flow is wide in cross-direction upstream of the houses. Houses also affect the deposition area. The presence of houses increased flooding and deposition damage in some areas, whereas it reduced damage in others. When setting the houses, the areas between the houses were set lower than the houses located at the grid points. Such areas were designated as roads, and the results showed that the flow occurred along the roads, as in real disasters.
机译：泥石流到达冲积扇时会引起洪水和沉积物沉积。许多房屋都是用冲积扇建造的，这可能会影响泥石流的泛滥和沉积。在这项研究中，我们首先对日本最近的泥石流灾害进行了实地调查;其中之一就是伊豆大岛（Izu Oshima）沉积物灾难，发生在2013年10月。位于上游，下部地区的房屋以及面向小型桥梁和十字路口的房屋比其他地区的房屋遭受的破坏更大。其次，我们使用泥石流模拟器（KANAKO 2D和Hyper KANAKO）进行了数值模拟，以确定房屋对泥石流泛滥和沉积的影响。为了进行模拟，考虑到房屋从地面标高的高度，设置房屋位置的网格点。我们模拟了典型的泥石流情况和实际灾害情况。仿真结果表明，当存在房屋时，泥石流的扩散在房屋上游的横向上很宽。房屋也会影响沉积面积。房屋的存在增加了某些地区的洪水和沉积破坏，而减少了其他地区的破坏。设置房屋时，房屋之间的区域设置为低于网格点处的房屋。这些区域被指定为道路，结果表明，与真实灾难一样，流量沿着道路发生。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号