穿越陡坎地形的偏压黄土隧道大变形时空特征研究

doi:10.3973/j.issn.2096-4498.2020.05.006

隧道建设（中英文） ›› 2020, Vol. 40 ›› Issue (5): 652-659.DOI: 10.3973/j.issn.2096-4498.2020.05.006

穿越陡坎地形的偏压黄土隧道大变形时空特征研究

周　鹏¹, 高金仓¹, 李　磊¹, 郑　飞¹, 戴　勇²

(1. 三门峡市国道三一零南移项目建设管理有限公司, 河南三门峡　472000;
2. 中南大学土木工程学院, 湖南长沙　410075)

出版日期:2020-05-20 发布日期:2020-06-06
作者简介:周鹏(1976—),男,河南许昌人,2016 年毕业于中原工学院,土木工程专业,硕士,高级工程师,主要从事山岭隧道监测及施工技术工作。E-mail: hnsmxzp@ 126. com。

Temporal and Spatial Characteristics of Large Deformation of Unsymmetrically-pressured Loess Tunnel Passing through Scarp Terrain

ZHOU Peng¹, GAO Jincang¹, LI Lei¹, ZHENG Fei¹, DAI Yong²

(1. Sanmenxia National Highway 310 South Project Construction Management Co., Ltd., Sanmenxia 472000,
Henan, China; 2. School of Civil Engineering, Central South University, Changsha 410075, Hunan, China)

Online:2020-05-20 Published:2020-06-06

摘要/Abstract

摘要： 针对黄土隧道开挖这一施工领域中的难题,依托地坑院隧道,对隧道穿越沿线地质地形的施工风险进行分析,同时基于监控量测数据,对典型横断面和纵向段的初期支护变形规律进行研究,得出初期支护沿时空分布的变形特征。分析结果表明: 1)围岩变形持续时间长、变形速率大,有时具有突变性; 2)初期支护横断面收敛不均,纵向变形与断面距掌子面距离直接相关; 3)隧道变形受地形、地下水和施工的影响较大。根据现场围岩大变形规律针对性地制定相关控制措施,研究成果可为现场施工提供技术性指导。

关键词: 黄土隧道, 偏压, 大变形, 监控量测, 变形处治

Abstract: The loess tunnel excavation is always a difficulty in the field of construction. The construction risks of Dikengyuan Tunnel crossing the geological terrain along the line are analyzed, the deformation laws of the primary support of typical cross-sections and longitudinal sections are studied based on the monitoring and measurement data, and the temporal and spatial characteristics of primary support are obtained. The analytical results show that: (1) The surrounding rock deformation is characterized by long duration and high speed, and sometimes with abrupt variation.
(2) The cross-section of the primary support is unevenly converged, and the longitudinal deformation is directly related to the distance from the chosen section to the tunnel face. (3) The tunnel deformation is greatly affected by terrain, groundwater and construction. Some relevant control measures are purposed according to the large deformation laws of the surrounding rock on the site. The research results can provide technical guidance for the site construction.

Key words: loess tunnel, unsymmetrical pressure, large deformation, monitoring measurement, deformation treatment

中图分类号:

U 456. 3

周鹏, 高金仓, 李磊, 郑飞, 戴勇. 穿越陡坎地形的偏压黄土隧道大变形时空特征研究[J]. 隧道建设, 2020, 40(5): 652-659.

ZHOU Peng, GAO Jincang, LI Lei, ZHENG Fei, DAI Yong. Temporal and Spatial Characteristics of Large Deformation of Unsymmetrically-pressured Loess Tunnel Passing through Scarp Terrain[J]. Tunnel Construction, 2020, 40(5): 652-659.

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穿越陡坎地形的偏压黄土隧道大变形时空特征研究

Temporal and Spatial Characteristics of Large Deformation of Unsymmetrically-pressured Loess Tunnel Passing through Scarp Terrain

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