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首页> 外文会议>Annual highway geology symposium >Case Studies on Rockfall Mitigation and Rock Slope Stabilization in California, Tennessee, Virginia, and Vermont
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Case Studies on Rockfall Mitigation and Rock Slope Stabilization in California, Tennessee, Virginia, and Vermont

机译：加利福尼亚州，田纳西州，弗吉尼亚州和佛蒙特州的岩崩减缓和边坡稳定案例研究

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Rockfall constitutes a major hazard along our nation's roadways and a nagging liability to our maintenance and engineering departments. Recurring cleanup and repair costs have stressed dwindling maintenance budgets. The extensive nature of the problem precludes repairing and mitigating every possible site, but new and innovative mitigation technologies and contracting techniques can serve to stretch tight budgets. There are many methods that can be used to stabilize a rock slope. These include altering the slope geometry, installing drains, adding reinforcement, or a combination of these methods. The challenge for engineers is to design a method that can be installed with little or no impact to the traveling public, is expedited through innovative contracting methods, limits the disturbance to environmentally sensitive areas, and maintains an aesthetically pleasant appearance and appropriate service life. This presentation covers four case studies that highlight innovative technology and innovative contracting methods for rockfall mitigation. The case studies include a project for the United States Army Corps of Engineers near Chowchilla, CA using design/build/warranty contracting and post-tensioned rock bolts with Maccaferri B600 mesh facing; a project for the Tennessee Department of Transportation near Maryville, TN using rock dowels and Geobrugg's high-capacity Tecco® mesh facing; a design/build project for the Virginia Department of Transportation near Hillsville, VA using a shear dowel array encased in reinforced shotcrete overlying a drilled drainage array; and an emergency design/build rockfall mitigation project for the Vermont Agency of Transportation that used a shear key, scaling, vegetation removal, rock dowels, and both wet and dry mix shotcrete.
机译：落石事故是美国沿途的重大危险，对我们的维护和工程部门构成了沉重的负担。经常性的清理和维修成本使维护预算不断减少。问题的广泛性使得无法修复和缓解每个可能的站点，但是新的创新性缓解技术和签约技术可以使预算紧张。有许多方法可用于稳定岩石​​边坡。这些措施包括更改边坡的几何形状，安装排水装置，增加加固筋或这些方法的组合。工程师面临的挑战是设计一种方法，该方法可以对旅行的公众几乎没有影响地安装，通过创新的承包方法可以加快安装速度，将干扰限制在对环境敏感的区域，并保持美观的外观和适当的使用寿命。本演讲涵盖了四个案例研究，这些案例研究突出了减轻岩崩的创新技术和创新承包方法。案例研究包括一个在加利福尼亚州乔奇拉附近的美国陆军工程兵团的项目，该项目使用具有Maccaferri B600网格面的设计/建造/保修合同和后张预应力锚杆;田纳西州交通运输部在田纳西州马里维尔附近的一个项目，该项目使用了岩石销钉和Geobrugg的高容量Tecco®网格饰面;弗吉尼亚州希尔斯维尔附近的弗吉尼亚交通运输部的设计/建造项目，采用的是用销钉固定在加固的喷射混凝土中的剪切销钉阵列，并覆盖钻孔的排水装置;以及为佛蒙特州交通运输署设计的紧急减灾减灾项目，该项目使用了剪力键，结垢，去除植被，岩石销钉以及干湿混合喷射混凝土。

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