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During the pouring process of the second lining concrete, one side of the two ends of the trolley is in contact with the already formed concrete, and it is not necessary to block, and the other side is empty, and a plug template is required.
The secondary lining plug template must have sufficient strength, stiffness and stability. After the lining trolley is positioned, the plug template is installed. The core of the installation of the plug template is the positioning and installation of the buried waterstop.
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Specific click to visit:https://www.gf-bridge-tunnel.com/products/tunnel-lining-trolley-accessories/lining-trolley-plug-steel-template/
