Long pipe shed and small pipe combined broken lamellar tunnel forepoling combined reinforcement process

The invention discloses a long pipe shed and small pipe combined broken lamellar tunnel forepoling combined reinforcement process which comprises the following steps: S1, lofting and excavating a contour, and mounting a positioning steel frame; s2, a pipe shed construction platform is built, a pipe...

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Bibliographic Details
Main Authors LAI GUOSEN, FENG CHAO, ZHANG GANG
Format Patent
LanguageChinese
English
Published 12.04.2024
Subjects
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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Summary:The invention discloses a long pipe shed and small pipe combined broken lamellar tunnel forepoling combined reinforcement process which comprises the following steps: S1, lofting and excavating a contour, and mounting a positioning steel frame; s2, a pipe shed construction platform is built, a pipe shed hole is formed, and an advanced pipe shed is installed; s3, welding and grouting reinforcement are conducted on the advanced pipe shed and the steel frame; s4, advance small guide pipe reserved holes are formed according to the number of excavated trusses; and S5, after the total truss number is excavated, hidden hole construction under the effect of one circulating pipe shed advance support is completed. By means of the innovative advanced supporting method for overall stability control and local stability of the broken thin tuffaceous slate rock mass tunnel surrounding rock, stability control over the front surrounding rock can be provided, and deformation is controlled within a certain range in cooperation
Bibliography:Application Number: CN202310409855