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首页> 外文期刊>Tunnelling and underground space technology >Environmental risk management for a cross interchange subway station construction in China
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Environmental risk management for a cross interchange subway station construction in China

机译：中国交叉路口地铁站建设的环境风险管理

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摘要

Ground surface settlement induced by urban subway construction using shallow tunnelling method is inevitable and it may cause a series of negative impact to existing nearby structures and utilities. In order to guarantee environmental safety, a risk management methodology which aims at process control for ground settlement and existing nearby structures is proposed. It includes 5-stage technology-based steps: survey of existing conditions, designing control standards for key risk factors, analyzing environmental response under tunnel construction and designing process control standards, monitoring and taking proper process control measures during construction, and risk reassessment after construction. This methodology was put into practice in the Huangzhuang subway station construction which is the largest cross interchange subway station construction using shallow tunnelling method in China. According to site survey, nearby pipelines and existing buildings were determined to be the key risk factors. The risk control standards for nearby pipelines and existing buildings were made according to available standards in China and related literatures. Design of process control standards for ground surface settlement was assisted by numerical simulation, which aimed at controlling the key risk factors. During construction, monitoring was adopted for the nearby pipelines, existing buildings and ground surface. After the four drifts excavation of the double-deck part of Line 4, a series of risk control measures, which included treatment of the unfavorable geological bodies, installation of roof pipes, compensation grouting, full-face grouting and some other control measures, were taken. Due to these risk control measures, ground surface settlements, except at two measuring points of Line 4, were successfully controlled under the given process control standards for both Line 4 and Line 10. All the pipelines and buildings were under their normal service state during tunnel construction. The maximum deflection for the 6 pipelines above the station was controlled to be within 2 mm/m and the maximum settlement of all the monitoring points for the pipelines was less than 30 mm. For the four important existing buildings in close vicinity, the maximum deflection was less than 1 mm/m; the maximum settlement value was 6.8 mm and the maximum uplift value was 3.0 mm. The risk control system was shown to be effective in ensuring environment safety, structure safety and construction safety. These safety control methods, the methodology of designing these control standards and the measures taken in the construction can serve as a practical reference for other similar projects.
机译：城市地铁采用浅埋隧道施工引起的地表沉降是不可避免的，并且可能对附近的现有建筑物和公用设施造成一系列负面影响。为了保证环境安全，提出了一种风险管理方法，旨在控制地面沉降和附近现有建筑物的过程。它包括基于技术的5个步骤：调查现有条件，设计关键风险因素的控制标准，分析隧道施工中的环境响应并设计过程控制标准，在施工过程中监控并采取适当的过程控制措施以及在施工后进行风险重新评估。这种方法在黄庄地铁站建设中得到了实践，这是中国最大的利用浅埋隧道法的交叉交叉地铁站建设。根据现场调查，确定附近的管道和现有建筑物为主要风险因素。附近管道和现有建筑物的风险控制标准是根据中国现有标准和相关文献制定的。数值模拟辅助了地面沉降过程控制标准的设计，旨在控制关键的危险因素。在施工过程中，对附近的管道，现有建筑物和地面进行了监控。在4号线双层部分进行四次漂移开挖之后，采取了一系列风险控制措施，包括对不利地质体的处理，屋顶管的安装，补偿灌浆，全断面灌浆和其他一些控制措施。采取。由于采取了这些风险控制措施，除了在4号线和10号线的既定过程控制标准下，成功地控制了4号线两个测量点以外的地表沉降。在隧道施工期间，所有管道和建筑物均处于正常使用状态。施工。站上方6条管线的最大挠度控制在2 mm / m以内，管线所有监测点的最大沉降量均小于30 mm。对于附近的四个重要的现有建筑物，最大挠度小于1 mm / m。最大沉降值为6.8 mm，最大隆起值为3.0 mm。事实证明，该风险控制系统在确保环境安全，结构安全和施工安全方面是有效的。这些安全控制方法，设计这些控制标准的方法以及在施工中采取的措施可为其他类似项目提供实用参考。

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  • 来源
    《Tunnelling and underground space technology》 |2011年第6期|p.750-763|共14页
  • 作者

    Qian Fang; Dingli Zhang; Louis Ngai Yuen Wong;

  • 作者单位

    School of Civil and Environmental Engineering, Nanyang Technological University. Singapore 639798, Singapore,Tunnel and Underground Engineering Research Center of Ministry of Education, Beijing Jiaotong University, Beijing 100044, China;

    Tunnel and Underground Engineering Research Center of Ministry of Education, Beijing Jiaotong University, Beijing 100044, China;

    School of Civil and Environmental Engineering, Nanyang Technological University. Singapore 639798, Singapore;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    shallow subway tunnelling; environmental risk management; control standard; grouting;

    机译：浅埋隧道;环境风险管理;控制标准;灌浆;

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