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收稿日期: 2017-03-03
修回日期: 2017-04-10
网络出版日期: 2017-05-27
Cutter Replacing Technologies for Shield Based on Hardened Mud Membrane
Received date: 2017-03-03
Revised date: 2017-04-10
Online published: 2017-05-27
吴琼 . 基于硬化泥膜的填舱换刀技术研究[J]. 隧道建设, 2017 , 37(S1) : 107 -110 . DOI: 10.3973/j.issn.1672-741X.2017.S1.017
Water gushing and sand gushing even collapse of working face would be induced by cutter replacing of shield in sandy soil stratum. The sandy soil is grouted by mixed grout of concretesand slurry and bentonite under pressure of soil chamber. As a result, a new kind of mixed mud membrane is formed. The cutter replacing work can be carried out after cleaning of hardened grout in soil chamber. The application of the abovementioned technology to a Metro shield tunnel in Guangzhou shows that the technology is rational and efficient.
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