The support arch not only has a good supporting effect, but also saves materials, is simple in construction, is beneficial to mechanized operation, and has a fast construction speed. Support arch are used in mine roadways, secondary support of mine roadways, and support of mountain tunnels.
The retractable support arch has the advantages of high initial support force and large support strength. When the pressure of the surrounding rock on the support reaches a certain value, the support arch will yield and shrink. The result of the shrinkage makes the surrounding rock act The pressure on the support drops, thus avoiding the damage of the support caused by the pressure of the surrounding rock being greater than the bearing capacity of the support. The support arch is mainly composed of straight wall arch, inner curved leg and outer curved leg.
The popularization and application research of supports arch has improved the safe production conditions of mines and reduced production costs. Support arch is in line with the national policy of replacing steel with wood and has good benefits and social and economic benefits. Jining China Coal is a professional manufacturer of arch brackets with low prices and good credit. With many years of production experience, worry-free after-sales and guaranteed quality.
