管幕冻结法现场试验研究

胡向东; 郭晓东; 王啟铜; 任辉; 贺龙鹏; 邓声君

doi:10.3973/j.issn.1672-741X.2015.S2.001

隧道建设 >

2015 , Vol. 35 >Issue S2: 1 - 7

DOI: https://doi.org/10.3973/j.issn.1672-741X.2015.S2.001

研究与探索

管幕冻结法现场试验研究

胡向东 ,
郭晓东 ,
王啟铜 ,
任辉 ,
贺龙鹏 ,
邓声君

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(1.同济大学地下建筑与工程系，上海 200092； 2.同济大学岩土及地下工程教育部重点实验室， 上海 200092； 3.港珠澳大桥珠海连接线管理中心，广东珠海 519030)

胡向东(1961—),男,浙江衢州人,1999年毕业于莫斯科国立矿业大学,地下工程与矿井建设,博士,副教授,主要从事隧道与地下工程、人工地层冻结法方面工作。

收稿日期: 2015-10-27

修回日期: 2015-11-20

网络出版日期: 2015-12-24

基金资助

交通运输部建设科技项目(2013318J11300)；国家自然科学基金资助项目(51478340)

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Field Test Study on Freezing Technology of FreezeSealing Pipe Roof

HU Xiangdong ,
GUO Xiaodong ,
WANG Qitong ,
REN Hui ,
HE Longpeng ,
DENG Shengjun

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(1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of  Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China;  3. The Management Center of Zhuhai Link Road of Hong KongZhuhaiMacao Bridge, Zhuhai 519030, China)

Received date: 2015-10-27

Revised date: 2015-11-20

Online published: 2015-12-24

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摘要

港珠澳大桥珠海连接线拱北隧道工程口岸暗挖段的超前预支护体系采用管幕冻结法。该工法独创运用内置在顶管里面的冻结管、加强管以及限位管3种管路的冻结系统，以便实现“冻起来、抗弱化、控冻胀”这一独特的管幕冻结法理念。通过现场试验，对该工法在现场条件下的冻结效果以及控制冻结方案进行研究。试验结果表明：管幕冻结法在现场环境下具有优良的封水效果；通过限位管实施的“热控”限位效果局限于限位管区域而调控盐水温度的“冷控”限位则对整个冻结帷幕都能产生影响。

关键词： 管幕冻结法; 现场试验; 港珠澳大桥; 冻结模式; 控制冻结

本文引用格式

胡向东 , 郭晓东 , 王啟铜 , 任辉 , 贺龙鹏 , 邓声君 . 管幕冻结法现场试验研究[J]. 隧道建设, 2015 , 35(S2) : 1 -7 . DOI: 10.3973/j.issn.1672-741X.2015.S2.001

Abstract

As an innovative presupporting method in tunnel construction, FreezeSealing Pipe Roof (FSPR) is applied to Gongbei Tunnel of Hong KongZhuhaiMacau Bridge. An effective freeze control system, which contains master freezing tubes, enhancing freezing tubes and limiting tubes, is established for building up the frozen curtain, maintaining its stability during excavation and controlling the volume of frozen soil to limit frost heave dynamically. Field test is carried out to confirm the real freezing effect. The results of test indicate that the FreezeSealing Pipe Roof can achieve good waterproof curtain in the actual tunnel construction condition. The mode of “hot control” can inhibit the growth of frozen soil wall around limiting tubes, while the “cold control” has influence on the whole frozen wall.

Key words： freezesealing pipe roof; field test; Hong KongZhuhaiMacau Bridge; freezing mode; controled freezing

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