Analysis of the deformation induced by the advance pre-reinforcement construction of a large cross-section tunnel in water-rich sandy rock

被引：0

作者：

Li, Hui ^{[1
]}

Yu, Shaohui ^{[1
]}

Yang, Chaoshuai ^{[1
]}

Bai, Zhongkun ^{[1
]}

Zhu, Dehua ^{[2
]}

机构：

[1] Technology Center of China Railway Tunnel Group, Luoyang 471009, China

[2] College of Planning and Architectural Engineering, Henan University of Science and Technology, Luoyang 471003, China

来源：

Modern Tunnelling Technology | 2013年 / 50卷 / 04期

关键词：

Railroad tunnels - Concrete construction - Extrusion - Grouting - Finite element method - Deformation - Mortar;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

As for the engineering characteristics of sandy rock, advance pre-reinforcement with horizontal jet grouting was applied in the large cross section of the Taoshuping Tunnel on the Lanzhou-Chongqing Railway. This paper presents a detailed analysis of the extrusion deformation, pre-displacement, crown settlement, and convergence that was carried out by finite element numerical simulation and theoretical calculations combined with field monitoring data. The analysis shows: 1) the initial maximum displacement rate is in direct proportion to the final accumulative displacements; 2) Crown settlement and convergence displacement present obvious spatial effects; and 3) Crown settlement and convergence displacement have certain relevance.

引用

页码：128 / 137

共 22 条

[21] Function mechanism and analytical method of a double layer pre-support system for tunnel underneath passing a large-scale underground pipe gallery in water-rich sandy strata: A case study
Zhao, Chenyang
Lei, Mingfeng
Shi, Chenghua
Cao, Haorong
Yang, Weichao
Deng, E.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2021, 115
[22] Analysis of strata deformation and structure impact due to large section water-abundant soft rock shallow tunnel under unsymmetrical pressure passing through existing structure
Cao, R. (finite@yeah.net), 1600, Academia Sinica (31):

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