Steel arch support is a kind of passive support for coal mine support. It has high tensile strength and compressive strength, and at the same time has good toughness, high supporting force and strong supporting strength. It can be used multiple times and is widely used. Mines, especially in deep complex roadways and soft coal seam roadways.
The best stress state of the steel arch support is that the back wall is filled and compacted to make it evenly compressed. When the pressure value of the surrounding rock used on the U-shaped steel support reaches a certain value, the support will be compressed and the surrounding rock will act on the U-shaped steel. The pressure on the support is reduced, so as to prevent the support from being damaged by the surrounding rock pressure being greater than the bearing capacity of the U-shaped steel support.
According to the specific conditions of the site, flexibly select the model, structure and shed distance of the steel arch support, and correctly guide the construction of the roadway steel support to ensure its effective and reliable work, which is useful for accelerating the speed of roadway excavation, reducing the amount of repairs in the later stage of the roadway, and ensuring safety Production, extending the service life, obtaining better technical and economic benefits, and giving full play to the support performance of the bracket are of great significance.
