Supporting of soft rock tunnel excavation has been one of the key technical problems which affects the further development of coal industry production and construction of our country .

practical significance of steel support for mine roadway support equipment

Principles of using U-shaped Tunnel Roof Supports

The combined support of U-shaped steel arch support, metal mesh, and shotcrete has changed the limitations of the three support forms used alone, and gave full play to the advantages of the three supp

Steel mine support is a very popular support tool at present. Steel mine support is widely used in coal mine roadway, mine support, underground tunnel engineering support and other scenes.

Compared with other rigid brackets, the U-shaped steel arch support has a shrinkable and stable and reliable bearing capacity, adapts to the load and deformation of the soft surrounding rock, has a hi