• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Rapid Excavation and Tunneling Conference 2015 proceedings >GROUND FREEZING FOR TUNNEL CROSS PASSAGES: FIRST APPLICATION IN NORTH AMERICA
【24h】

GROUND FREEZING FOR TUNNEL CROSS PASSAGES: FIRST APPLICATION IN NORTH AMERICA

机译：隧道交叉通道的地面冻结：在北美的首次应用

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

Ground freezing was used for the first time in North America to freeze two 2.8 m diameterrncross passages for the Port of Miami Tunnel. While ground freezing has beenrnused for similar construction in Europe and Asia, this was the first application in NorthrnAmerica. This project was complicated by the extremely porous subsea soils. To reducernthe permeability of these soils and rock, an initial grouting program was implementedrnfrom the ground and channel surfaces.rnTwo rows of horizontal freeze pipes were drilled and installed to form the frozenrncylinders for excavation support and groundwater control for cross passage construction.rnThe refrigeration system used to circulate the cooling medium was located at thernground surface and supplied to the cross passages via supply and return manifolds andrna specially designed pumping system.rnAn extensive system of instrumentation was installed to monitor ground temperatures,rnsoil and rock water pressures, coolant flow rates and pressures and processrninformation from the refrigeration plants.rnThis paper will discuss the grouting approach, freezing system drilling and installation;rnfreeze monitoring and the excavation and completion process of a very successfulrnproject. Guidelines and recommendations for frozen cross passage construction arernsummarized.
机译：北美首次使用地面冻结技术来冻结迈阿密港口隧道的两条2.8 m直径的交叉通道。在欧洲和亚洲，类似的建筑都采用了地面冻结技术，但这是在北美北部首次应用。海底土壤非常多孔，使该项目变得复杂。为了降低这些土壤和岩石的渗透性，从地面和通道表面实施了初始灌浆程序。-钻了两排水平冻结管并安装了这些冻结管，以形成用于开挖支撑的冷冻斜面和用于交叉通道施工的地下水控制。循环冷却介质位于地面，并通过供气和回油歧管以及专门设计的泵送系统输送到横向通道。rn安装了广泛的仪器系统，用于监测地面温度，土壤和岩石水压力，冷却剂流速和压力本文将讨论注浆方法，冷冻系统的钻孔和安装，冻结监控以及非常成功的项目的开挖和完工过程。总结了冻结过路通道的指南和建议。

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