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研究与探索

厦门地铁3号线过海段隧道盾构法与矿山法海下对接施工风险评估

  • 张继超 ,
  • 周建军 ,
  • 孙飞祥 ,
  • 杨振兴 ,
  • 张兵 ,
  • 游慧杰
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  • (1. 盾构及掘进技术国家重点实验室, 河南 郑州 450001; 2. 中铁隧道局集团有限公司, 广东 广州 511458;  3. 黄河勘测规划设计有限公司, 河南 郑州 450003)

张继超(1993—),男,河南商丘人,2019年毕业于中国地质大学(武汉),地质工程专业,硕士,助理工程师,主要从事隧道与地下工程领域科研工作。E-mail: 2321089229@qq.com。

网络出版日期: 2021-03-05

基金资助

河南省科技攻关项目(1921022102178); 厦轨道(合)([2015]0381); 中国中铁科技开发计划(2018-重点-11)

Risk Assessment on Underwater Docking Construction of Shield Tunnel and Mined Tunnel of Subsea Section on Xiamen Metro Line No. 3

  • ZHANG Jichao ,
  • ZHOU Jianjun ,
  • SUN Feixiang ,
  • YANG Zhenxing ,
  • ZHANG Bing ,
  • YOU Huijie
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  • (1. State Key Laboratory of Shield Machine and Boring Technology, Zhengzhou 450001, Henan, China;

    2. China Railway Tunnel Group Co., Ltd., Guangzhou 511458, Guangdong, China; 3. Yellow River Engineering Design and Research Institute Co., Ltd., Zhengzhou 450003, Henan, China)

Online published: 2021-03-05

摘要

为解决厦门地铁3号线过海段盾构法与矿山法隧道海下盾构贯通施工对接工程面临的高水压、高风险、复杂地质工况下的风险处置问题,采用WBS-RBS法辨识风险源,通过AHP法建立风险评估体系,构造判断矩阵,结合风险值,对其进行风险评估定级,并得出整体过程中最主要的风险源是风化槽的结论。针对最主要的风险元素(停机卡盾、拱顶坍塌、风化槽突泥涌水),制定相应的预防及应急处理措施,如预注浆、加强配筋和喷射混凝土,进行风险管控,保障了海下隧道对接工程的顺利贯通完工,验证了施工风险评估的准确性和预防措施的可行性。

本文引用格式

张继超 , 周建军 , 孙飞祥 , 杨振兴 , 张兵 , 游慧杰 . 厦门地铁3号线过海段隧道盾构法与矿山法海下对接施工风险评估[J]. 隧道建设, 2021 , 41(2) : 225 -231 . DOI: 10.3973/j.issn.2096-4498.2021.02.008

Abstract

The underwater docking construction of shield tunnel and mined tunnel of Xiamen metro line No. 3 is characterized by high water pressure, high risk, and complex geological conditions. In this paper, work breakdown structureresource breakdown structure (WBSRBS) method is used to identify the main risk sources, a risk assessment system is established by the analytic hierarchy process (AHP) method, and a judgment matrix is constructed to conduct risk assessment. Risk assessment results show that the main risk source is weathered groove. Based on the key risk factors, such as shield jamming and stop, crown collapse, and mud burst of weathered groove, countermeasures, including pregrouting, reinforcement strengthening, and shotcreting, are implemented. The successful docking of shield tunnel and mined tunnel indicates the feasibility of the risk assessment accuracy and countermeasures adopted.
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