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 whi

Master the characteristics of high strength of steel arch support. Under the same bearing capacity, the weight of the steel arch support is light; the steel material is uniform and is an ideal elastop

The tunnel roof support is subject to high pressure, long support time, easy installation and deformation, so the tunnel top support is mainly used for mine tunnels, secondary support of mine tunnels,

The support arch is a plane compression or bending structure, so it is necessary to set lateral support and ensure the compression stability of the arch outside the axis plane through the purlin or la

The purpose of steel mine support is to solve the shortcomings of the existing technology, thereby improving the safety of underground support. Buffering bearing capacity and tightness to the roof mak

Because the safety requirements of underground roof support are very high, those skilled in the art continue to research and make new improvements on the support structure. The currently widely used U