岩土工程学报2026，Vol.48Issue(1)：45-53,9.DOI:10.11779/CJGE20240622
深埋无中导洞连拱隧道过程荷载计算方法研究
Calculation method for rock pressure of deeply buried multi-arch tunnel without middle drift
摘要
Abstract
Multi arch tunnels without central guide tunnels avoids the drawbacks of traditional multi arch tunnel construction processes such as complexity and frequent stress conversion.In recent years,it has been widely used in China,but there is no unified standard for calculating the surrounding rock pressure of this new structure.Based on the Prussian theory and process design method,considering the inhibitory effect of the support structure of the advance tunnel on the collapse arch height of the subsequent tunnel and the intensifying effect of the excavation of the subsequent tunnel on the surrounding rock pressure of the advance tunnel,a process load calculation method for deep buried multi arch tunnels without a central guide tunnel is established.Finally,the rationality of the process load calculation method is verified by comparing and analyzing with the monitoring and measurement results of typical engineering sites and reference calculation methods.The research results indicate that determining the support capacity of the advance tunnel support structure through the combination of stress distribution can quantify the inhibitory effect on the surrounding rock pressure of the subsequent tunnel.Quantitative analysis of the four main factors that affect the degree of influence on surrounding rock pressure(rock level S(32.66%),excavation width W1(28.02%)of the front tunnel,excavation width W2(22.34%)of the rear tunnel,and support strength G(16.99%)of the front tunnel)makes the value of the coefficient of influence of rear tunnel excavation on the surrounding rock pressure of the front tunnel more reasonable.By solving the process load calculation method for deep buried multi arch tunnels without central guide tunnels,a more scientific and reasonable design basis can be provided for the support structure of multi arch tunnels without central guide tunnels.关键词
连拱隧道/普氏理论/过程荷载/最大隶属度原则Key words
multi-arch tunnel/Protodyakonov's theory/process load/principle of maximum affiliation分类
交通工程引用本文复制引用
ZHANG Jian,SUN Weiyu,YAN Songhong,WANG Yonggang,WANG Wen..深埋无中导洞连拱隧道过程荷载计算方法研究[J].岩土工程学报,2026,48(1):45-53,9.基金项目
国家自然科学基金项目(52208392,52068044,U2468217) （52208392,52068044,U2468217）
中国博士后科学基金项目(2021M693843) （2021M693843）
甘肃省交通运输厅科技项目(2024-48)This work was Supported by National Natural Science Foundation of China(Grant Nos.52208392,52068044 and U2468217),China Postdoctoral Science Foundation(Grant No.2021M693843),and Gansu Provincial Department of Transportation Science and Technology Projects(Grant No.2024-48). （2024-48）
