狭小空间大直径盾构整体平移转体施工技术——以孟加拉卡纳普里河底隧道为例

张飞雷, 何源, 李铮, 钟涵, 许超

doi:10.3973/j.issn.2096-4498.2022.S1.054

隧道建设 >

2022 , Vol. 42 >Issue S1: 459 - 465

DOI: https://doi.org/10.3973/j.issn.2096-4498.2022.S1.054

施工技术

狭小空间大直径盾构整体平移转体施工技术——以孟加拉卡纳普里河底隧道为例

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（1. 中交第二航务工程局有限公司, 湖北武汉 430040; 2. 交通运输行业交通基础设施智能制造技术研发中心, 湖北武汉430040; 3. 长大桥梁建设施工技术交通行业重点实验室, 湖北武汉 430040；4. 中交二航局第三工程有限公司，江苏镇江 212021；5. 中国路桥工程有限责任公司，北京 100011）

张飞雷（1993—），男，河北石家庄人，2019年毕业于湖南大学，岩土工程专业，硕士，工程师，现从事盾构隧道施工及研究工作。 Email： zhangfl_93@163.com。

网络出版日期: 2022-08-23

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Construction Technology of Integral Translation and UTurn of Large Diameter Shield in Narrow Space： a Case Study of Kanaphuli Tunnel in Bangladesh

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(1. CCCC Second Harbour Engineering Co., Ltd., Wuhan 430040, Hubei, China; 2. Research and Development Center of Transport Industry of Intelligent Manufacturing Technologies of Transport Infrastructure, Wuhan 430040, Hubei, China;

3. Key Laboratory of Large-span Bridge Construction Technology, Wuhan 430040, Hubei, China 4. China Communications Second Navigational Bureau Third Engineering Co., Ltd., Zhenjiang 212021, Jiangsu, China; 5. China Road & Bridge Corporation, Beijing 100011, China）

Online published: 2022-08-23

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摘要

针对海外项目大直径盾构在狭小工作井空间内转场过程中施工工期紧张、缺乏专业技术人员、缺乏大型拆装设备的问题，依托孟加拉卡纳普里河底隧道项目中单台盾构掘进双线并行隧道施工实例，开展狭小空间大直径盾构整体平移转体施工技术研究。结果表明：采用一种自主设计的新型钢球基座作为行走介质，辅以工作井底板钢板铺设，可将钢套筒一体化托架与工作井底板的滑动摩擦转变为滚动摩擦，大幅度减小盾构的平移转体阻力。另外，结合盾构调坡系统设计，实现了大直径盾构在狭小工作井空间内高精度异步协同调坡、分阶段长距离平移以及原位180°转体，其施工经验可为国内外类似项目提供借鉴和经验。

关键词： 狭小空间; 大直径盾构; 异步协同调坡; 平移; 转体

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张飞雷, 何源, 李铮, 钟涵, 许超 .

狭小空间大直径盾构整体平移转体施工技术——以孟加拉卡纳普里河底隧道为例

[J]. 隧道建设, 2022 , 42(S1) : 459 -465 . DOI: 10.3973/j.issn.2096-4498.2022.S1.054

Abstract

In the narrow working shaft space of overseas projects, problems always occur during the transition process of largediameter shield, including tight construction schedule, lack of professional technical personnel, and largescale disassembly and assembly equipment. The construction technology of integral translation and Uturn of the largediameter shield in narrow space is studied by taking the tunnel under the Karnapuhli river in Bangladesh bored by a shield as an example. The results show that: by adopting a new type of steel ball base designed independently as the walking medium and supplemented by the laying of the bottom plate of the working shaft, the sliding friction between the steel sleeve integrated bracket and the bottom plate of the working well can be converted into rolling friction, greatly reducing the translation and rotation resistance. Furthermore, combined with the shield slope adjustment system design, the technology can achieve highprecision asynchronous coordinated slope adjustment, staged longdistance translation, and insitu 180° rotation of the largediameter shield in narrow working shaft space, providing reference and experience for similar projects in the future.

Key words： narrow space; large diameter shield; asynchronous cooperative slope adjustment; translation; rotation

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