The tunnel roof support is a special steel material for coal mine support. Its shape is U-shaped, tunnel roof support is mainly used for mine roadway, secondary support of mine roadway, and support fo

Underground roof support is currently in the mining industry and coal support field. Underground roof support are mainly assembled by bending and welding, and are often used in mine tunnels, secondary

Under the condition of ensuring the load-bearing capacity of the mine roof support, the mine roof support has better stability than ordinary I-beam and saves metal, so it has better economic effect. M

The support arch not only has a good supporting effect, but also saves materials, is simple in construction, is beneficial to mechanized operation, and has a fast construction speed. Support arch are

As an efficient and reasonable support method, the steel arch support is used in specific scenes as the surrounding rock pressure value used on the steel arch support reaches a certain value, the brac

The steel mine support is a passive support for coal mine support. Steel mine support has high tensile strength and compressive strength. Steel mine support also has good toughness performance, high s