Key Construction Technology for Shallow Buried Tunnel Entry
Drilling and blasting tunnels often have shallow burial depth and poor surrounding rock conditions.When encountering abundant groundwater,tunnel collapse,roof collapse,deformation,etc.often occur during tunnel construction,posing high construction safety risks,high treatment costs,and seriously affecting construction progress.The article relies on the subsequent optimization project of connecting the Hanjiang,Rongjiang,and Lianjiang water systems.For the construction of shallow buried tunnels,measures such as replacing cement soil at the top of the tunnel,connecting arches and support piles to form a whole,setting advanced small conduits in the middle of the large pipe shed,and replacing the bottom of the arch frame are taken to achieve safe and rapid entry into the tunnel.By summarizing this technology,key construction techniques for shallow buried tunnel entry construction have been developed.
shallow buried tunnelentering tunnel for constructionexcavation supportsecurity technology
国家科技期刊平台
NSTL
万方数据
