• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>North American Tunneling Conference 2002, May 18-22, 2002, Seattle, Washington, USA >Managing uncertainty and risk ― The exploration program for Seattle's proposed Light Rail Tunnels
【24h】

Managing uncertainty and risk ― The exploration program for Seattle's proposed Light Rail Tunnels

机译：管理不确定性和风险―西雅图提议的轻轨隧道的勘探计划

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The risk of changed condition claims on tunnel projects has been directly related to the thoroughness of the geotechnical exploration program by several authors. This paper assesses the benefits of a detailed investigation of very complex geotechnical conditions along a 4.5-mile-long tunnel alignment with 4 stations for the Sound Transit Light Rail Tunnels (Link) in Seattle utilizing a phased geotechnical exploration program. The exploration program used a range of exploration techniques ranging from standard soil borings and sampling procedures to state-of-the-art sonic drilling and statistical assessments of sample data. The goal of every exploration program is to balance the costs associated with explorations and testing against the risks associated with not having enough data to adequately characterize the subsurface conditions. The phasing of a geotechnical exploration program maximizes the benefits obtained from borings as the design and alignment selection proceeds from conceptual, to preliminary, to final design and helps to balance cost, schedule, and risk. Based on our experience with the Link project, an adequate level of geotechnical investigation may be greater than generally accepted guidelines on exploration depth and spacing. Further, this level of geotechnical investigation by the owner may be appropriate regardless of whether or not the project is Design/Build or Design/Bid/Build.
机译：几位作者对隧道项目提出变更条件的风险直接与岩土勘探计划的彻底性有关。本文通过分阶段岩土勘探计划，评估了一项非常复杂的岩土条件的详细调查的好处，该研究沿着一个4.5英里长的隧道路线与西雅图的Sound Transit轻轨隧道（链接）的4个站进行了对准。勘探计划使用了一系列的勘探技术，从标准的土壤钻孔和采样程序到最新的声波钻探和样本数据的统计评估。每个勘探计划的目标是在与勘探和测试相关的成本与因没有足够的数据来充分表征地下条件而带来的风险之间取得平衡。在设计和路线选择从概念设计，初步设计到最终设计的过程中，岩土勘探计划的分期可最大程度地从钻孔中获得收益，并有助于平衡成本，进度和风险。根据我们在Link项目中的经验，足够的岩土勘测水平可能会比公认的勘探深度和间距指南更高。此外，无论项目是设计/建造还是设计/投标/建造，业主进行的这种岩土勘测水平都是合适的。

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