基于粒子群算法高地应力软岩隧道支护方案优化

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中图分类号：U455 文献标志码：A 文章编号：1005-8249（2025）04-0105-06

DOI：10.19860/j.cnki.issn1005-8249.2025.04.020

YU Wenjing1，²，GAO Xinqiang1，23， KONG Chao4，WANG Lichuan5， ZHAO Jingbo ° GUAN Yuezhuoer1²，DONG Beiyi1，²，ZHU Zhengguo1，2

（1. State Key Laboratory of Mechanical Behavior and System Safety of Trafic Engineering Structures，

Shijiazhuang Tiedao University， Shijiazhuang O5O043，China；2.Schol of Civil Engineering，Shijiazhuang

Tiedao University，Shijiazhuang O5O043，China； 3. Hebei Key Laboratory of Mechanics Behavior Evolution

and Control of Transport Engineering Structures， Shijiazhuang O50043， China； 4. School of Civil Engineering and Architecture， Southwest University of Science and Technology，Mianyang 21OoOO，China;

5. China Railway 18th Bureau Group Co.，Ltd.， Tianjin 300222，China）

Abstract：Theinitial support parameters haveasignificant impactonthesafeconstructionof highlystressdsoftrock tunels withlargedeformations.Basedonahighlystressdtunnel inthewesternregion，numerical simulationandparticle swarm optimization（PSO）tooptimize keyparametersof theinitial support scheme，suchas：steelarchlongitudinalspacing，anchor bolt lengthand circumferentialspacing，andshotcretethicknessandstrength.Theresultsshowthattocontrolthesttlement deformationoftheinitialsupportachvault，thereisaninversecoelationbetweenthebendingstfessofsteelframeandthe

longitudialspacingofthesteelarch，aswellasthelengthandlongitudinal spacingoftheanchor.Theseparametersshouldbe selected within certainranges；Comprehensivearch fotand vault deformation analysis，anchor length should belonger than 3m ， anchor longitudinal spacing should be less than 1.0m ；the strength grade and thickness of shotcrete are conservative and can be appropriately reduced.

Keywords：railwaytunnel；high ground stress；initial support deformation；optimization of supporting scheme；particle swarm optimization algorithm

0 引言

高地应力软岩隧道大变形控制是目前隧道工程的热点问题之一[1]，具有施工风险大，整治成本高、处理周期长等工程特点。（剩余5484字）