DOI: 10.11799/ce201706012
Tunneling and supporting technology at junction of open channelexcavation and blind tunnel construction in inclined shaft
LIANG Yu-chun
LU Hong-jian
Abstract：In order to guarantee the safety at the junction of open channel excavation and blind tunnel construction in inclined shaft,and solve the problems of tunneling and supporting,combining with the geological conditions of topsoil and weathered bedrock section Tianhe Coal Mine,as well as mature experience of inclined shaft construction,a supporting scheme was applied comprising pipe-shed advance support,"U29 type steel shed + reinforced concrete arching" permanent support,short-distance driving and supporting accompanied with pilot shaft dewatering.The technologies of open channel excavation,front reinforcement,roadway tunneling,pipe-shed support and concrete arching etc.,in the junction construction of open channel to blind tunnel,were studied.The results show that,supporting parameters,supporting effect,stability and reliability of the tunnel meet the requirements of the coal mine safe production.
Keywords：inclined shaftopen channel excavationroadway tunnelingpipe-shed advance supportU29 type steel shedreinforced concrete arching
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 40-42 )