太白山隧道变形规律及预留变形量研究  

Research on deformation law and reserved deformation of Taibai Mountain Tunnel

作　　者：周君 ZHOU Jun(China Railway Construction Investment Group Co.,Ltd.,Beijing 100855,China)

机构地区：[1]中国铁建投资集团有限公司,北京100855

出　　处：《工程建设》2025年第1期24-29,共6页Engineering Construction

摘　　要：为掌握隧道施工变形规律,并以此设置合理的预留变形量,以在建的太白山隧道为工程依托,通过现场实测与统计拟合分析,研究了在不同围岩级别条件下的变形规律及合理预留变形量。结果表明:1)太白山隧道变形整体呈现出沉降明显大于相对收敛的特征;2)Ⅴ级深埋段和Ⅳ级软岩段变形规律相似,先后经历了急剧变形、持续增长和缓慢变形3个阶段;3)Ⅴ级深埋段预留变形量偏小,建议预留变形量取150~230 mm、Ⅳ级软岩段预留变形量偏大,建议预留变形量取30~70 mm。本文结果可为类似地层的隧道施工提供一定的参考。In order to understand the deformation law of Tunnel construction and set a reasonable reserved deformation based on it,the deformation law and reasonable reserved deformation under different surrounding rock levels are studied by using the Taibai Mountain Tunnel under construction as the project support through field measurement and statistical fitting analysis.The results show that:1)The overall deformation of Taibai Mountain Tunnel shows the characteristics of significantly greater settlement than relative convergence;2)The deformation law of the deep buried section of level V and the soft rock section of level IV are similar,and they have successively experienced three stages of rapid deformation,continuous growth and slow deformation;3)The reserved deformation of the Grade V deep buried section is too small,and it is recommended that the reserved deformation be 150~230 mm.The reserved deformation of the Grade IV soft rock section is too large,and it is recommended that the reserved deformation be 30~70 mm.The results can provide a certain reference for tunnel construction in similar strata.

关 键 词：隧道工程 变形规律 合理预留变形量 

分 类 号：TD926.4[矿业工程—选矿]