Steel arch supports, steel arches, and steel grids are all used for support. Don't drop the soil blocking the culvert tunnel. Supports are generally inclined connecting members, the most common of which are herringbone and cross-shaped, and the cross-sectional form can be steel pipes, H-beams, angle steels, etc., to enhance the stability of the structure. There is a special type of steel support inside the steel support called a steel arch.
Steel arch supports include steel arches and steel grids. Circular steel supports are called steel arches, and horizontal ones are generally called steel supports. Steel arches are specially made I-shaped steels or other shaped steels. After tunnel excavation, initial spraying, hanging nets, and standing arches are used. A steel grill is a type of arch. The main difference is that the steel grill is welded and assembled by rebar and looks like a cage. It is commonly known as a flower arch.
Steel arch supports are generally used in the poor geology of Class V surrounding rock, and steel grids are used in the geology of Class IV which is slightly better. Steel braced cross braces are generally used when digging a pilot hole.
