富水破碎带浅埋隧洞下穿省道开挖超前支护效果研究

打开文本图片集

张海旺，王振明，万发，等．富水破碎带浅埋隧洞下穿省道开挖超前支护效果研究[J].人民珠江，2025，46（11）：35-43.

中图分类号：TV554 文献标识码：A 文章编号：1001-9235（2025）11-0035-09

Effectiveness of Advanced Support for Shallow-Buried Tunnel Excavation Under-Crossing Provincial Highwayin Water-Rich Fractured Zone

ZHANG Haiwang'，WANG Zhenming'，WAN Fa2*，LI Tingchong'，LIAO Wenguang'，HUANG Xiangyi³ （1.SinohydroBureau6Co.，LtdShenyang0l69，China;2.PearlRiverWaterResourcesResearchInstitute，PearliverWater ResourcesCommissionGuangzou51610China;3.cholofHydraulicandceanEngieeing，Changsha UniversityofSience& Technology，Changsha ，China）

Abstract：Toaddressthesafetycontrolchallngesofshallow-buriedtunnelsunder-crosingprovincialhighwaysinwaterich fracturedzones，thisstudytooktheGenzi Tunnelproject （C1section）of theGuangdong WaterResourcesAlocationProjectinthe BeibuGulfMetropolitanAreaasacasestudy.Numericalsimulationsandfieldmeasurementswereemployedtoinvestigatethe advancedsupportusingsmallconduitsandpipesheds，andteefectivenessofthreeadvancedsupportschemeswasanalyzedsmall conduits alone，pipe sheds alone，and combined small conduits with pipe sheds. The findings show that ① The fluid-solid coupling numerical model efectively simulates and predictsthesupport process duringtheconstructionof shalow-buried tunelsundercrossing provincial highways in water-rich fractured zones. ② Dual support and pipe shed support schemes can effectively reduce and control surface subsidence compared to the small conduit scheme. ③ The arching effect generated by pipe sheds induces substantial stressconcentratiosduringiitialsupportatteultsprgingofouterostpipedelementsTereforeitisessarytoosider theadverseeffctofthepossiblestressconcentrationonteinitialsupportforcewhenarrangingthesupportscopeofthepipehed.

Thedual support schemeintegratingpipeshedsandsmallconduitsproves efectiveinensuringsafetyduring theconstructionof tunnels under-crossing provincial highways.

Keywords： tunnel; advanced support; pipe shed; under-crossing; subsidence

随着基础设施建设的快速发展，隧道工程在复杂地质条件下的应用日益增多。（剩余9947字）