| 公路沿线花岗岩风化区滑坡危险度评价--以日本49号国道合户地区为例 |
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| 引用本文： | 邱骋,谢谟文,江崎哲郎.公路沿线花岗岩风化区滑坡危险度评价--以日本49号国道合户地区为例[J].中国地质灾害与防治学报,2005,16(1):23-28. |
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| 作者姓名： | 邱骋 谢谟文 江崎哲郎 |
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| 作者单位： | 1. 九州大学,环境系统研究中心,日本,福冈,812-8581
2. 九州大学,环境系统研究中心,日本,福冈,812-8581;北京科技大学,土木与环境工程系,北京,100083 |
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| 摘 要： | 对公路沿线边坡进行稳定性评价及滑坡灾害分析，对于由滑坡、泥石流等引起的公路灾害的防治具有重要指导意义。为了评价处于花岗岩风化区的日本福岛县合户地区49号国道沿线边坡的滑坡危险程度，在调查和分析了该地区的表层破坏模式、并通过简易探测方法摸清了风化土层的厚度分布后，将研究区域划分为边坡单元(Slopeunit)，使用椭球体下半部模拟滑动面的形状，通过随机试算法确定各边坡单元危险滑动面的位置及空间形状；采用一种基于GIS的边坡稳定性三维分析模型计算各边坡单元最小安全系数以及滑坡发生概率，定量评价滑坡灾害危险程度。所有的计算过程及结果显示均在一个基于GIS平台的系统中完成，为如何利用GIS技术更好地为滑坡灾害防治工作服务拓宽了思路。
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| 关 键 词： | 滑坡灾害 边坡单元 GIS 边坡稳定性三维分析模型 危险度评价 花岗岩风化区 |
| 文章编号： | 1003-8035(2005)01-023-06 |
| 修稿时间： | 2004年5月17日 |
Landslide hazard assessment on highway slope in weathered granite zone--An example of No.49 National Highway in Hehu area, Japan |
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| Qiu Cheng,XIE Mo-wen,ESAKI Tetsuro.Landslide hazard assessment on highway slope in weathered granite zone--An example of No.49 National Highway in Hehu area, Japan[J].The Chinese Journal of Geological Hazard and Control,2005,16(1):23-28. |
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| Authors: | Qiu Cheng XIE Mo-wen ESAKI Tetsuro |
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| Institution: | QIU Cheng~1,XIE Mo-wen~ |
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| Abstract: | Landslide hazard assessment of highway slope is essential for maintenance work effectively and to reduce disaster. To evaluate the landslide hazard of slope in weathered granite zone along the 49~(th) national highway in Gouto area of Japan, possible collapse modes are surveyed and the depth distribution of regolith is obtained by a simple survey method. The study area is divided into many slope units and a random searching method is used to locate the critical slip surface for each slope unit. The critical slip surface with the minimum safety factor is calculated by a 3D slope stability model, using GIS (Geographical Information System). Finally, the failure susceptibility of each slope unit is calculated and landslide hazard degree is zoned quantitatively. All the calculations are implemented by a system based on GIS platform. |
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| Keywords: | landslide hazard slope unit GIS 3D slope stability model assessment of risk granite weathered zone |
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