Steel Arch Support is a common profile in the mining industry and in the field of coal support. This product is mainly used to ensure mine safety.
The current common material is 20Mnk. In the actual application, Steel Arch Support with 20Mnk is the first choice for the wells with more water in the tunnel and the environment with damp environment. Most of these materials will be processed into a combined Steel Arch Support. The general section of the beam is matched with two leggings. There are very few bends in actual machining. If you encounter a bend, you can also consider the use of I-beam materials. The I-beam section is slightly different from the mine I-beam except that the bottom surface is in contact with the waist. The contact angle of the I-beam is 90 degrees, and the angle of the contact part of the miner steel is wide angle (2 angles greater than 90 degrees). As a result, the industrial physical performance gap is very large. Due to the reasonable cross-sectional shape, they enable steel to perform at a higher level and improve the ability to undertake. Unlike ordinary I-beams, the flanges of H-beams are widened and the inner and outer surfaces are usually parallel, which facilitates the connection of high-strength screws to other components. Its size is reasonable and the model is complete, which is convenient for design and selection. In the structural design, the I-beam should be selected according to its mechanical properties, chemical properties, weldability and structural dimensions.
Compared with other rigid supports, Steel Arch Support has the ability to shrink and stabilize the load capacity. It adapts to the load and deformation of soft surrounding rock, has high section utilization, convenient support for branch support, small maintenance, high recovery rate of bracket recovery, and reduced pit. Wood use, environmental benefits are very obvious. It is mainly used for mine roadways, secondary support of mine roadways, and support for mountain tunnels. It is subject to high pressure, long support time, easy to install and not easy to deform.
