Research on the Construction Technology of Roof Lifting in the Inclined Shaft into the Main Hole of Tianzhu Mountain No.1 Tunnel
In complex geological conditions,the construction of long tunnel inclined shaft into the positive hole is difficult,and the safety risk is high.The structure at the intersection is complex and changeable,and the stress transformation is repeated during the construction process,which is prone to collapse accidents.In order to reduce the safety risk of large-section tunnel roof lifting construction,this paper takes Tianzhu Mountain Tunnel No.1 tunnel roof lifting construction as an example,adopts the"lateral shed hole method"construction,and expounds the roof lifting construction scheme of inclined shaft intersection.The technical principle of the construction method is simple,and the operation is strong,which can provide experience reference and technical guidance for similar tunnel roof lifting construction.
TunnelThe roof-lifting construction of the main tunnelLateral shed method
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