Construction Technology for Excavation Support and Lining Concrete of Factory Access Tunnel
The access tunnel to the factory is one of the important components of the hydropower plant building system.It is the main transportation channel during the construction and installation phase of the building system,as well as the permanent channel during the operation phase.The stability requirements of the tunnel are high,and it is necessary to ensure the quality of excavation support and concrete construction.The excavation and support construction of the access tunnel to the factory adopts the methods of"full section excavation"or"middle guide leading,followed by trimming and expanding excavation on both sides",and timely support follow-up,which can accelerate the construction progress and ensure safety during the construction period.The construction of lining concrete adopts a simple steel formwork trolley for pouring,which can reduce construction costs while ensuring construction quality.
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