The research on the popularization and application of steel arch supports has improved the safe production conditions of mines and reduced production costs. It is in line with the national policy of replacing wood with steel and has good environmental and social and economic benefits. The stress state of the steel arch support is that the back of the wall is filled and compacted to make it evenly compressed. When the pressure value of the surrounding rock used on the steel arch support reaches a certain value, the support will compress, causing the surrounding rock to act on the steel arch support The pressure drops to prevent the surrounding rock pressure from being greater than the bearing capacity of the steel arch support and causing damage to the bracket.
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. It is used in mine roadways, especially in deep complex roadways and soft coal seam roadways. Steel arch support has the advantages of high initial support, strong support strength, easy installation, and non-deformation. Therefore, it is often used to manufacture roadway shrinkable metal support for mine roadway, secondary support of mine roadway, and support support for mountain tunnels. Protection and other purposes.
The steel arch support effectively reduces the occurrence of accidents such as roof fall and slabs, is safe and reliable, and improves the stability of the mine ventilation system. The use of U-shaped steel retractable support can better solve the problem of tunneling and support.
