昌宁隧道竖井辅助正洞施工技术研究

打开文本图片集

中图分类号：U455.8 文献标志码：A 文章编号：1005-8249（2025）03-0140-05

DOI：10.19860/j.cnki.issn1005-8249.2025.03.025

Abstract：To explore the technologyofusingshafttoassstconstructioninsuper-long highway tunnel，thearticle makesa studyonthe projectdesign，shaftconstructionmethod，constructioofshaft totunel，andcomesthefolowing conclusions：It isfeasibletouseshaftstoauxliarymain tunnelconstructioninextremelylonghighwaytunnelsundercomplexgeological conditions.Usingthe"mainshaft method"andtheinitialsupport structureofconcrete，full-envelopeconstruction methodcan safelyandeficientlycompletetheexcavationofshaftsandtheconstructionofturning tunnelsThesuccesfuluseofshaftsto ssistintheconstructionofthemaintunnelinChangning Tunnelhasfullyverifiedthetechnical feasibilityandconomic applicabilityofusing verticalshaftstoasistintheconstructionofthemain tunnelinextremelylongtunnelsundercomplex geological conditions. The findings may serve as practical guidelines for similar engineering applications.

KeyWords：super-long tunnel；shaft；auxiliaryconstruction；frontwelldrillmethod；modeconcreteinitialsupport; full -envelope construction method

0 引言

随着我国高速公路不断向西南山区延伸与扩张，隧道工程逐渐向“更长、更深”的方向发展，而特长隧道施工仅依靠进出口两端掘进难以满足工期要求。（剩余5436字）