浅埋暗挖隧道地层变形情况与超前注浆技术分析
Analysis of Formation Deformation and Advanced Grouting Technology in Shallow Buried Excavation Tunnel
陶胜强1
作者信息
- 1. 西南科技大学,四川 绵阳 621010
- 折叠
摘要
为明确深孔注浆技术以及超前小导管注浆对浅埋暗挖隧道底层变形情况的影响,以兰州地铁1 号线马滩站—土门墩站浅埋暗挖隧道工程实例为研究背景,依托于实际工程情况,采用数值模拟与分析的方式,对隧道断面开挖注浆后底层的位移、变形情况进行对比.可知注浆前后隧道拱顶最大沉降量分别为 22.59 mm、16.65 mm;隧道拱底隆起高程分别为40.00 mm、14.24 mm;隧道拱腰左侧由左向右的位移数值为 21.07 mm、18.18 mm;右侧由左向右的位移数值为 18.54 mm、10.30 mm.基于实际工况验证了深孔注浆技术以及超前小导管注浆对暗挖浅埋隧道的加固效果.
Abstract
For clear deep hole grouting technology and advanced small catheter grouting on the influence of the tunnel,in Lanzhou Met-ro line 1 Matan station-Tumendun station shallow buried dark tunnel engineering example as the research background,relying on the actual engineering situation,using the method of numerical simulation and analysis,the underlying displacement and deformation of the tunnel section excavation after grouting.It can be known that the maximum settlement of the tunnel vault is 22.59 mm,16.65 mm;the uplift elevation is 40.00 mm,14.24 mm;the displacement value of the left side of the tunnel arch waist is 21.07 mm,18.18 mm;the displacement value of the right side from left to right is 18.54 mm,10.30 mm.Based on the actual working condition,the reinforcement effect of deep hole grouting technology and advanced small catheter grouting on the shallow buried tunnel is verified.
关键词
浅埋暗挖隧道/地层变形/超前注浆技术/深孔注浆Key words
shallow buried excavationtunnel/formation deformation/advanced grouting technology/deep hole grouting引用本文复制引用
出版年
2024
NETL
NSTL
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