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

Mine roof support is a structure used to control the mine pressure in coal face. The form of pressure outside the mining surface ACTS on the roof support. In the mechanical system of the interaction b

The function of support arch in tunnel construction: support tunnel body, it and anchor, steel mesh, connecting reinforcement, concrete and so on to form a rigid body to prevent its collapse. After co

When the surrounding rock of the steel arch support is weak and broken and its self-stability is poor, the steel arch frame has such good mechanical properties that the initial support is required to