The best stress state of the U-shaped steel arch support is that the back wall is filled and compacted to make it evenly compressed. When the pressure value of the surrounding rock used on the U-shape

Main uses and advantages of U-shaped Steel Arch Support——U-shaped steel support is a kind of passive support srch for coal mine support. It has high tensile strength and compressive strength, and has

Tunnel Roof Support is a support measure that uses L, u, I steel and steel rails, tubes and other steel profiles, processed into the required shape, and reinforced with whole joists or rods assembled

Performance characteristics of galvanized u - shaped Underground Roof Support

Basic Introduction And Advantages Of Metal Underground Roof Support

Precautions And Sequence Of Moving Operation Of Steel Arch Support