岩土力学 ›› 2018, Vol. 39 ›› Issue (S2): 131-141.doi: 10.16285/j.rsm.2018.1498

• 基础理论与实验研究 • 上一篇    下一篇

基于熵权集对分析和车载激光扫描的 公路边坡危险性评价模型

刘洋洋,郭增长,李永强,李有鹏   

  1. 河南理工大学 测绘与国土信息工程学院,河南 焦作 454000
  • 收稿日期:2018-08-13 出版日期:2018-12-21 发布日期:2019-01-03
  • 通讯作者: 李永强,男,1976年生,博士,副教授,主要从事三维激光扫描及移动激光测量方面研究。E-mail: liyongqiang@hpu.edu.cn E-mail: 975492655@qq.com
  • 作者简介:刘洋洋,男,1991年生,博士研究生,主要从事地理空间信息应用及灾害风险评估研究。
  • 基金资助:
    国家“十二五”科技支撑项目(No.2012BAH34B00);国家自然科学基金项目(No.41771491);测绘地理信息公益性行业科研专项项目(No.201412020)

Risk assessment model of highway slope based on entropy weight set pair analysis and vehicle laser scanning

LIU Yang-yang, GUO Zeng-zhang, LI Yong-qiang, LI You-peng   

  1. College of Surveying and Mapping, Henan Polytechnic University, Jiaozuo, Henan 454000,China
  • Received:2018-08-13 Online:2018-12-21 Published:2019-01-03
  • Supported by:
    This work was supported by the Key Projects in the National Science & Technology Pillar Program during the Twelfth Five-year Plan Period(2012BAH34B00), the National Natural Science Foundation of China(41771491), and the National Surveying and Mapping Bureau of Surveying and Mapping Geographic Information Public Welfare Industry Research Projects(201412020).

摘要: 优化改进了集对分析理论和ICP算法,并在该基础上综合运用改进熵权集对分析和车载激光扫描技术,提出一种整体评价与局部评价相结合的公路边坡危险性评价模型。该模型先按照地质条件将公路边坡划分为若干路段,再采用改进熵权集对分析对各路段边坡进行整体评价,从而找出危险性较大的边坡。利用车载激光扫描技术获取各危险边坡两期激光点云数据,采用改进ICP算法对两期点云数据进行无控制匹配,再采用NUBRS建模技术构建两期边坡曲面模型并进行局部评价,从而找出危险边坡中具体的危险点。对评价结果、专家意见和实地考察情况进行归纳分析,并提出合理的灾害防治建议。以修武县某公路为例,采用文中模型进行应用研究。结果表明,该模型取得了良好的评价效果,不仅确定了危险边坡,还找出了其中的具体危险点,为公路边坡防灾减灾工作提供了一种新思路。

关键词: 公路边坡, 危险性评价, 熵权集对分析, 车载激光扫描技术, ICP算法, 防灾减灾

Abstract: In order to evaluate the risk of highway slope more comprehensively, the set pair analysis theory and the ICP(iterative corresponding point) algorithm are optimized and improved; and then on this basis, based on improved entropy weight set pair analysis and vehicle borne laser scanning technology, a risk assessment model of highway slope combining the overall evaluation with the local evaluation is proposed. During the specific implementation, firstly according to the geological conditions, the highway slope is divided into several sections; and the overall evaluation is conducted by the improved entropy weight set pair analysis model; and the dangerous slope is found out. Secondly the vehicle laser scanning technology is used to obtain the point cloud data of two stages for every dangerous slope; and the improved ICP algorithm is applied to unmatched control of point cloud data of two periods for the dangerous slope; then, the slope surface models of two periods are built by non-Uniform rational b-spline(NURBS) technology and the local evaluation is carried out; and the specific danger point in the dangerous slope is found. Finally the evaluation results, expert opinions and field visits are summarized and analyzed; and the reasonable suggestions for disaster prevention and control are proposed. Taking a road in Xiuwu County for example, the experimental research is carried out by using this model. The results show that this model has exerted a good evaluation effect, not only the dangerous slope is determined, but also the specific risk points are found, so as to provide a new idea for the disaster prevention and mitigation of the highway slope.

Key words: highway slope, risk assessment, entropy weight set pair analysis, vehicle laser scanning technology, ICP algorithm, disaster prevention and mitigation

中图分类号: 

  • U418.52
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