The tunnel roof support is a steel support provided along the perimeter of the section during tunnel construction. The wood wedges are driven into the surrounding rocks every 100 to 150 cm, which can

Tunnel roof support according to the specific site conditions, the flexibility to choose model, structure form and the tent of u-shape set distance, correctly guiding the construction of the tunnel ro

Steel mine support is a kind of support tool widely used in mine roadway, and it has incomparable advantages in complex zone or loose coal roadway. The mine support has good mechanical properties, hig

With the continuous advance of the mining face with mine roof support, the area of stope roof control gradually increases. When the direct roof with a small thickness gradually collapses, while the ha

The advantages and disadvantages of the steel arch support lie in the use of the scene, the differences in each detail will affect the final advantages and disadvantages to play, combined with the act

The tunnel roof support can effectively reduce the occurrence of roof caving and strip side accidents, and improve the stability of mine ventilation system. The research on the popularization and appl