摘要
边坡防护方案的合理有效是确保边坡治理及边坡长期稳定的关键,分析评价边坡防护方案具有重要的工程意义。采用极限平衡方法对湖北省十堰至白河公路阳南沟隧道进口边坡的稳定性进行了分析与评价,提出了整体加固和局部加固的综合防护方案,并采用有限单元方法对边坡防护方案进行模拟分析与评价,评估防护方案的合理性和有效性。结果表明:采取抗滑桩整体加固措施能保证边坡整体稳定,可有效地控制边坡的整体变形,减小边坡变形对阳南沟隧道大桥桥墩的影响,而采取抗滑挡墙能有效地控制边坡的局部稳定;整体加固和局部加固的边坡综合防护方案是合理的,可有效地确保阳南沟隧道进口边坡在施工和运营期间的长期稳定。该研究可为类似地区边坡的防护工程设计提供参考。
The reasonable and effective method of slope protection is the key to ensure the slope treatment and long-term stability,which has important engineering significance.This paper adopts the limit equilibrium method for the analysis and evaluation of Yangnangou tunnel entrance slope of Shiyan-Baihe Road in Hubei province.The paper also proposes a comprehensive protection scheme of overall strengthening combined with local reinforcement,simulates and analyzes the scheme by using FEM and evaluates the rationality and effectiveness of the protection scheme.The results show that the overall reinforcement measure by anti-slide piles can ensure the overall stability of the slope,and effectively control the slope deformation and reduce the influence of slope deformation on the bridge pier of the Yangnangou tunnel,while the anti-slide retaining walls can effectively control the local stability of the slope;the comprehensive slope protection scheme with both overall and local reinforcement is found to be reasonable and effective to ensure the longterm stability of Yangnangou tunnel entrance slope during construction and operation process.It will serve as a reference for the subsequent similar engineering design.
出处
《安全与环境工程》
CAS
2016年第3期140-145,共6页
Safety and Environmental Engineering
基金
国家自然科学基金项目(41402318)
湖北省交通科技项目"环境变化与工程活动条件下滑坡体演化特征及其防治技术研究"
中国地质大(武汉)岩土钻掘与防护教育部工程研究中心开放课题基金项目(201306)
关键词
隧道进口边坡
极限平衡方法
综合防护
有限单元法
防护方案论证
tunnel entrance slope
limit equilibrium method
comprehensive protection
finite element method
protection scheme proof
