U-shaped steel support is a kind of passive support for coal mine support, with high tensile strength and compressive strength, good toughness performance, high supporting force and large support strength. U-shaped steel support can be used for many times and is widely used in mine roadway, especially in deep complex roadway and soft coal seam roadway. And do the secondary support of mine roadway and through the mountain tunnel of mine roadway.
Compared with other rigid supports, u-shaped steel supports have flexible, stable and reliable bearing capacity, adapt to the load and deformation of soft surrounding rock, high utilization rate of section, easy support, small maintenance, high recycling reuse rate of supports, reduce the use of pit wood, and obvious environmental benefits.
The u-shaped steel support should be based on specific circumstances in the field, the flexibility to choose model, structure form and the tent of u-shape set 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.
