Principles Of Using U-shaped Tunnel Roof Supports
What Are The Advantages Of U-shaped Steel Underground Roof Support Compared To Other Brackets?
The best stress state of the U-shaped steel support is that the back wall is filled and compacted to make it press evenly. When the pressure value of the surrounding rock applied to the U-shaped steel
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 .
The stress principle of U-shaped Steel Arch Support
