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 effectively support the system. The supporting material of the tunnel roof support occupies less space, which can make the section space easy to accommodate and pass mobile drilling trolleys, decoration machines and movable formwork, etc., which is conducive to the realization of comprehensive mechanized construction and speed up. The tunnel roof support can be left in the concrete lining when needed, and used as a rigid steel bar to make the excavation section close to the lining contour, thereby reducing the amount of excavation and saving lining materials.
The tunnel roof support has significant features such as effectively reducing the occurrence of roof fall, sheet gang accidents, etc., safe and reliable, and improving the stability of mine ventilation system. The tunnel roof support is used to better solve the problem of tunnel support. Tunnel roof supports are widely used in mine tunnels, secondary support of mine tunnels, and support and support of mountain tunnels. The tunnel top support is favored by the majority of mining machinery industries due to the large pressure, long support time, easy installation and deformation.
