Traditional Culture Encyclopedia - Traditional festivals - What is the function of screw formwork for underground pipe gallery water stop?

What is the function of screw formwork for underground pipe gallery water stop?

In fact, the underground pipe gallery water stop screw template has two functions, one is fastening, and the other is waterproof.

Fastening is mainly to fasten the formwork at both ends to support, prevent the formwork from exploding and control the wall thickness.

Waterproofing is mainly embodied in the water stop piece in the middle of the water stop screw, and the outer wall of the underground pipe gallery needs waterproofing. When the water in the outer soil permeates along the screw, the water stop plays the role of preventing the water from permeating and changing the water permeation path. So as to achieve the function of stopping water.