偏压隧道洞口关键进洞技术方案

——以俄初山隧道为例

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中图分类号：U45 文献标志码：A 文章编号：2095-2945（2026）03-0153-06

Abstract：ThisstudyexploresthekeytechnologiesandconstructionmethodsfortunnelentryattheEchuMountainTunnel， withafocusontheanalysisof thetunnelentryscheme，advancedsupport，andslope protection techniques.Byemployinga dual-way tunneling method combined with ring excavation and core soil reservation，alongside Φ108 large pipe arch and arch liningtechnologies，thestudyensuresthestabilityofthesurroundingrockatboththetunnelinletandoutlet，effectively addresingtheproblemoflateralpresure.Theresearchalsopresentsflexibleprotectivemeasuresandsupportdesignstailoredto diferentgeologicalconditions，especiallyincassofClassVsuroundingrock，wheretheefectivecombinationofsupportpiles andlateralpressurewallshasprovidedesentialsupportforsmoothtunnelconstruction.Throughareviewoftheconstruction practicesofthistunnel，thispaperprovidesboththeoreticalfoundationsandpracticalguidanceforfuturetunelentry technologies in similar lateral pressure conditions.

Keywords：biased tunnel; advance support;ring excavation；tunnel entry technology；Echu Mountain Tunnel

隧道工程，作为现代交通与基础设施建设的关键组成部分，面临着复杂多变的地质和环境条件。（剩余8088字）