• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>US Rock Mechanics/Geomechanics Symposium >Evaluation Mitigation of Icefall Hazards Emanating from Rock Slopes
【24h】

Evaluation Mitigation of Icefall Hazards Emanating from Rock Slopes

机译：岩石坡发出的冰雪危险评价及减灾

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The implications of ice build-up on surface rock excavations can prove to be costly over the design lifetime of a slope. In areas subject to significant precipitation and cold temperatures, ice accumulation can unknowingly wreak havoc on surface rock excavations and lead to an increase in the frequency of rock and icefall events. Ice build-up can destabilize a rock slope by expansive action (ice-wedging), by surcharging portions of the slope face, and by inducing an ice-dammed condition where water-pressures are allowed to build-up on discontinuity surfaces as a result of inadequate drainage during periods of thaw. Although icefall may logically be treated as a variant of the classic rockfall problem, there are some significant differences between rockfall and icefall hazard evaluations. High-energy icefall impacts can also result in a significant amount of shatter, which can result in the release of ice projectiles. Ice build-up mitigation techniques can take the form of simple drainage elements and periodic cold-weather maintenance efforts, or can incorporate more advanced treatments like engineered topographic enhancements and bio-stabilization. In cases where source zone treatment is not permissible, engineered barriers may be incorporated for mitigating the risk of icefall impact to the traveling public where appropriate. Through our research and project case histories, this paper and presentation will describe some of the technical challenges associated with the burgeoning practice area of icefall evaluation, the importance of long-term monitoring and maintenance programs, and mitigation strategies for dealing with the under-appreciated problem of icefall at both the source and impact zone.
机译：冰积聚对表面岩石挖掘的影响可以证明是倾斜的设计寿命的昂贵。在经过显着降水和寒冷的温度的地区，冰积累可能在表面摇滚挖掘中造成造成严重破坏，并导致岩石和冰雪频率的增加。冰块可以通过膨胀的动作（冰楔），通过倾斜面的收费，并诱导冰灾条件，允许允许在不连续表面上积聚水压的冰灾条件来稳定岩石斜率在解冻时期的排水不足。虽然剪报可以在逻辑上被视为经典岩石问题的变种，但岩石和冰危害评估之间存在一些显着差异。高能量冰雪的影响也可能导致大量的粉碎，这可能导致冰射弹的释放。冰块缓解技术可以采取简单的排水元件和周期性的冷天气维护工作的形式，或者可以纳入更先进的处理，如工程化的地形增强和生物稳定化。在不允许源区治疗的情况下，可以在适当情况下纳入工程障碍以减轻对旅行公众的冰幕影响的风险。通过我们的研究和项目案例历史，本文和介绍将描述与冰结算练习领域有关的一些技术挑战，该违法行为评估，长期监测和维护计划的重要性以及处理不受议会的减缓策略源和冲击区的剪报问题。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号