泥水盾构带压开舱时泥浆配制及泥膜形成实验研究

doi:10.3973/j.issn.1672-741X.2014.09.007

隧道建设（中英文） ›› 2014, Vol. 34 ›› Issue (9): 857-861.DOI: 10.3973/j.issn.1672-741X.2014.09.007

泥水盾构带压开舱时泥浆配制及泥膜形成实验研究

闵凡路¹，姜腾²，魏代伟²，张亚洲²

（1. 河海大学力学与材料学院，江苏南京 210098； 2. 河海大学岩土工程研究所，江苏南京 210098）

收稿日期:2013-07-15 修回日期:2013-11-21 出版日期:2014-09-20 发布日期:2014-09-22
作者简介:闵凡路（1985—），男，山东滕州人，2012年毕业于河海大学，岩土工程专业，博士，讲师，主要从事盾构隧道相关的教学和科研工作。
基金资助:
国家自然科学基金项目（51408191）；中国博士后科学基金资助项目（2014M560388）；江苏省博士后科研资助计划项目（1301031B）

Experimental Study on Preparation and Filter Membrane Formation of Slurry during Hyperbaric Operation in Tunneling by Slurry Shield

MIN Fanlu¹, JIANG Teng², WEI Daiwei², ZHANG Yazhou²

(1. College of Mechanics and Materials, Hohai University, Nanjing 210098, Jiangsu, China; 2. Geotechnical Research Institute of Hohai University, Nanjing 210098, Jiangsu, China)

Received:2013-07-15 Revised:2013-11-21 Online:2014-09-20 Published:2014-09-22

摘要/Abstract

摘要：

在水下盾构隧道的建设中难免会出现盾构停机进行开舱检修的情况，带压开舱是目前水下隧道开舱常用的方法之一。然而，如何调整泥浆使其在开挖面上形成泥膜对开挖面稳定更有利，是工程界极为关注的问题。结合南京长江隧道工程在砾砂地层中的带压开舱作业，开展泥浆配制及成膜实验研究。提出先以低密度、低黏度的泥浆形成渗透带，再以较高密度、高黏度的泥浆形成泥皮型泥膜的2步调整的泥浆方案，并在现场带压开舱作业中进行了应用，形成了气密性良好的泥膜，保障了开挖面的稳定，对今后类似的泥水盾构开舱时的泥浆配制有重要参考意义。

关键词: 水下隧道, 泥水盾构, 带压开舱, 泥膜, 泥浆配制

Abstract:

During the construction of underwater tunnels, the boring of the shields has often to be stopped to check and repair the cutting tools under hyperbaric conditions. However, how to adjust the slurries to form a dense filter membrane on the excavation face so as to maintain the stability of the excavation face is still a problem to be solved. In the paper, experimental study is made on the preparation and filter membrane formation of slurries, with the hyperbaric operation of shield in gravel and sand strata during the construction of Nanjing Yangtze River Tunnel as an example. A series of tests are made on the preparation and filter membrane formation of different slurries. A twosep slurry adjustment program, i.e, firstly, slurry with low density and low viscosity is used to infiltrate into the sand strata, then slurry with large density and large viscosity is used to form a filter membrane on the excavation face, is proposed. The program proposed has been applied in the hyperbaric operation during the construction of Nanjing Yangtze River Tunnel, airtight filter membrane has been formed and the stability of the excavation face has been guaranteed. The experience can provide valuable reference for the slurry preparation in other similar projects.

Key words: underwater tunnel, slurry shield, hyperbaric condition, filter membrane, slurry preparation

中图分类号:

U 455.3+9

闵凡路，姜腾，魏代伟，张亚洲. 泥水盾构带压开舱时泥浆配制及泥膜形成实验研究[J]. 隧道建设, 2014, 34(9): 857-861.

MIN Fanlu, JIANG Teng, WEI Daiwei, ZHANG Yazhou. Experimental Study on Preparation and Filter Membrane Formation of Slurry during Hyperbaric Operation in Tunneling by Slurry Shield[J]. Tunnel Construction, 2014, 34(9): 857-861.

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泥水盾构带压开舱时泥浆配制及泥膜形成实验研究

Experimental Study on Preparation and Filter Membrane Formation of Slurry during Hyperbaric Operation in Tunneling by Slurry Shield

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