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- Title
清华园隧道大直径泥水盾构始发控制掘进分析.
- Authors
房新胜; 叶来宾; 朱牧原; 杜贵新
- Abstract
The Tsinghuayuan Tunnel passes through silty clay and sandy cobble stratum by slurry shield, which is the only tunnel with shield method for the project. This paper summarized the experience of shield launching of Tsinghuayuan tunnel, which was of guiding significance for the control of driving parameters of slurry shield in silty clay and sandy pebble stratum. When shield tunneling in silty clay and sandy cobble stratum, the force of reaction frame of starting part should be considered. Static strength analysis and calculation should be carried out for reaction frame of three wells. In order to study the control problem of large-diameter slurry shield launching, this paper collected the excavation parameters of Tsinghua garden tunnel, used the finite element software to carry out some static strength analysis and calculation on the reaction frame, and obtained the conclusion about the size order of the reaction frame at each position, such as the beam and vertical beam, etc. During the launching part, the empirical data of tunneling parameters such as slurry pressure in the project were summarized. It is found that the control parameters of driving parameters are cutting amount and overflow water.
- Publication
Railway Investigation & Surveying, 2022, Vol 48, Issue 1, p81
- ISSN
1672-7479
- Publication type
Article
- DOI
10.19630/j.cnki.tdkc.202011250003