U-shaped steel support is a support tool widely used in mine roadway, and it has incomparable advantages in the complex zone deep in the roadway or the loose coal seam roadway. U-shaped steel support has good mechanical properties, high tensile strength, compressive strength, at the same time has good toughness performance, high initial support force, large support strength, can be used for many times.
As a kind of efficient and reasonable support way, in the concrete u-shaped steel support , as used in the surrounding rock on the u-shape set pressure value reaches a certain value, the bracket can produce compression, the effect of surrounding rock in the pressure drop on the u-shape set, thereby avoid surrounding rock pressure is greater than the bearing capacity of u-shape set and make the stents.
Everyone in use, according to the specific site conditions, the flexibility to choose model, structure form and the tent of U-shaped steel support distance, roadway construction of u-shape set correct guidance, to ensure the effective and reliable to work, to speed up the drivage, reduce the amounts of the late repair, guarantee the safety in production, extend the length of service, achieve better technical and economic benefits, give full play to the bracket support performance has important significance.
