铁道标准设计2017，Vol.61Issue(5)：114-118,125,6.DOI:10.13238/j.issn.1004-2954.2017.05.025
富水砂卵石地层双层衬砌类圆形断面矿山法地铁隧道适应性研究
Feasibility Study of Round Cross-section Mining Tunnel with Double Lining in Water-rich Gravel Stratum
康华 1戴志仁1
作者信息
- 1. 中铁第一勘察设计院集团有限公司,西安 710043
- 折叠
摘要
Abstract
As for the tunnel mining beneath the existing shield tunnel in water-rich sandy gravel stratum, the overall design program is made based on construction period and relevant experiences, and the advantages of the tunnel mined beneath the exiting shield tunnel are made clear.The deformation control standard during tunneling is put forward based on the characteristics of sandy gravel stratum and relevant specifications.At last, the settlement and structure stresses of the double lining structure with primary support, second lining and third lining are analyzed and compared with those of the conventional structure with primary support and second lining.The advantages of double lining structure are justified.Research results show that round cross-section mining tunnel has obvious advantages in reducing excavation contour and improving mechanical performance;the formation load is mainly carried by the second lining and little load is acted on the third lining.The advantages of double lining structure in bearing capacity, maintaining stability and emergence capacity in particular are obvious.关键词
富水砂卵石/矿山法/类圆形隧道/穿越施工/双层衬砌/地铁Key words
Water-rich gravel stratum/Mining method/Round cross-section mining tunnel/Tunneling beneath existing shield tunnel/Double lining/Metro分类
交通工程引用本文复制引用
康华,戴志仁..富水砂卵石地层双层衬砌类圆形断面矿山法地铁隧道适应性研究[J].铁道标准设计,2017,61(5):114-118,125,6.
