Steel mine support is a kind of passive support, with high tensile strength and compressive strength, as well as good toughness, high supporting force, strong support strength, and can be used multiple times. It is widely used in mine roadways, especially It is in the deep complex roadway and soft coal seam roadway. Steel mine support are used for secondary support of mine tunnels and mine tunnels of mountain tunnels.
The steel mine support bears great pressure, supports a long time, and is easy to install and not easy to deform. Compared with other rigid supports, the mine support has a shrinkable and stable and reliable bearing capacity, and can adapt to the load and deformation of the soft surrounding rock. The utilization rate of the support section of the mine is high, the support is easy to be supported, and the maintenance amount is small. The mine support has a high recycling rate, reduces the use of pit wood, and has obvious environmental benefits. The project is safe and reliable, effectively reducing the occurrence of accidents such as roof fall and flapping, and improving the stability of the mine ventilation system.
The stress state of the steel mine support is that the back wall is filled and compacted to make it evenly compressed. When the pressure value of the surrounding rock used for the mine support reaches a certain value, the support will be compressed, causing the surrounding rock to act on the pressure of the mine support Decrease, so as to avoid the surrounding rock pressure being greater than the bearing capacity of the U-shaped steel support and the bracket damage.
