Load dispersing plate for supporting central part of a twin tunnel and a construction method of a twin tunnel using the load dispersing plate

摘要

The invention roads or railways, underground storage facilities, military facilities, etc. close tunnels (aka: Two arch tunnel), the structure and the construction method that first the left or tunnel main line of the right cross section of one step by step about the excavation, which reinforcing completely self-supporting after the center tunnel to the tunnel direction perpendicular to the traveling direction of the tunnel in the main line portion 50 the excavation and construction of steel supports (40) the installation, be the first and then the other side of the tunnel excavation cross-sectional finals after rebar reinforced concrete supports and lining the walls intermediate support is integrated in order to reinforce (91) and Main Line tunnel Connect with tarps and support the upper load distribution plate made of PC, and install to install the parts to drain into the ground through the middle of the supporting walls to prevent water penetration into the tunnel interior by continuous excavation and structural safety in construction and water is complete, the cross-section of the tunnel to complete the construction by utilizing the measurement result of the primary structure of the center-to-tunnel, characterized in that the arch form of the tunnel jibogong comprises a support that can be adjusted to fit into the drilling method and construction relate to.