Analysis on Smooth Blasting Construction Technology of Small Section Tunnel under Bad Geology
ZHANG Yue
JI Fengjie
LI Jian
Abstract：Hydraulic tunnels are important facilities for water conservancy development and infrastructure construction,among which small section tunnels bring challenges to tunnel construction due to their own size constraints.Combined with examples,the excavation principle of"shallow drilling weak blasting strong support"for small section tunnel excavation in adverse geology was proposed,and the specific construction plan was elaborated.The analysis results of displacement monitoring data showed that this construction plan could ensure that the displacement of key points in the surrounding rock was within the safe range,providing a reference for the construction of small section tunnels.
Keywords：small cross-sectionadverse geologysmooth blastingdisplacement monitoringstrong support
Publication Date：2025-01-27
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 110-114,124 )