引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 75次   下载 47 本文二维码信息
码上扫一扫!
分享到: 微信 更多
基于AHP-模糊综合评价方法的拉萨市周边溜砂坡稳定性评价
刘宁波1, 田荣燕1, 王海波1, 薛现凯2, 顾学颖1
1.西藏大学 工学院, 西藏 拉萨 850000;2.湖南大学 土木工程学院, 湖南 长沙 410082
摘要:
[目的]溜砂坡作为一种边坡灾害,近几年来,由于人类活动影响,其威胁程度不断提高。通过研究拉萨市周边溜砂坡的稳定性,为溜砂坡的预警及治理提供依据。[方法]通过选取拉萨市周边较为典型的溜砂坡灾害,使用层次分析法和模糊综合评价法分析坡高、岩体结构和年平均降雨量等10个因素对溜砂坡稳定性的影响。[结果]因风化占主导因素的岩体所形成的溜砂坡的危险等级相对较高,其整体呈散沙状,极易扩散,道路沿线山体易发生滑坡处所形成的溜砂坡危险等级普遍较低,碎屑颗粒较大且坡势较陡。[结论]目前拉萨市周边地区溜砂坡存在不稳定的发展趋势,需引起相关部门的高度重视;本评价方法真实可靠,能够准确快速地评价溜砂坡的稳定性。
关键词:  溜砂坡  AHP  模糊综合评价  稳定性分析  拉萨市
DOI:10.13961/j.cnki.stbctb.2019.02.026
分类号:S288
基金项目:西藏自治区重点科技计划项目“拉萨周边生命线工程地质灾害分布规律及防治对策研究”(Z2014A19G2-11);西藏自治区大学生创新性实验训练计划项目(2017QCX036;2017QCX025)
Stability Evaluation of Sand-sliding Slope Around Lhasa City Based on AHP-Fuzzy Comprehensive Evaluation Method
Liu Ningbo1, Tian Rongyan1, Wang Haibo1, Xue Xiankai2, Gu Xueying1
1.School of Engineering, University of Tibet, Lhasa, Tibet 850000, China;2.College of Civel Engineering, Hu'nan University, Changsha, Hu'nan 410082, China
Abstract:
[Objective] As a kind of slope disaster, the threat degree of sand-sliding slope has been increasing in recent years due to the influence of human activities. The stability of the sand-sliding slope around Lhasa City was studied in order to provide bases for the early warning and treatment of the sand-sliding slope.[Methods] By selecting the relatively typical sand-sliding disaster around Lhasa City, the paper analyzed the influence of ten factors, such as slope height, rock mass structure and annual average rainfall, on the stability of the sand-sliding slope by using analytic hierarchy process and fuzzy comprehensive evaluation.[Results] The sand-sliding slope formed by weathering-dominated rock mass was relatively high in risk level, and the whole was scattered and sandy, which was easy to spread. The sand-sliding slope formed by landslides along the road was generally low in risk level, with large debris particles and steep slope potential.[Conclusion] At present, the development trend of the unstable sand-sliding slope disaster in the area around Lhasa City is not optimistic, which should be paid more attention for relevant administrative agencies. The evaluation method in this paper is reliable, which can accurately and rapidly evaluate the stability of sand-sliding slope.
Key words:  sand-sliding slope  AHP  fuzzy comprehensive evaluation  stability analysis  Lhasa City