U-shaped steel arch is a support tool, which is widely used in mine roadways. It has incomparable advantages in complex areas deep in roadways or in loose coal seam roadways. It has good mechanical properties, high tensile strength and compressive strength, and at the same time has good toughness properties. The initial supporting force is high, the support strength is large, and it can be used multiple times.What is the structural composition of the U-shaped steel arch?
1. Top beam: It is arc-shaped, and its number is one or more according to the section of the roadway, the force of the support and the transportation conditions.

2. Column legs: There are three types, the first is a circular arc in the upper part and the straight section in the lower part; the second is all curved and has only one radius of curvature; the third is all curved, but there are two curvature radii.

3. Connector: The clamping device between the bracket section and the section can play a systematic connection role, and can also press the two sections of steel joints connected to provide pre-tightening force, so that there is friction between the U-shaped steel, so that ensure the arched bracket has a certain working resistance and a certain amount of shrinkage.
4. Inter-rack rods: To enhance the overall relative stability of the stent, and connect the stent from the longitudinal direction to form a whole.

5. Backing material: The filling material between U-shaped steel arch and surrounding rock, the purpose is to make U-shaped steel arch contact the surrounding rock closely, improve the stress condition of the bracket, increase its bearing capacity and maintain the stability of surrounding rock.

When using U-shaped steel arch, it is necessary to flexibly select the U-shaped steel arch model, structural form and shed distance according to the specific conditions on the site, and guide the construction of the U-shaped steel arch correctly in the roadway to ensure its effective and reliable work.

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Email: zxminesupport@zxsteelgroup.com