The steel arch support can be made by centralized prefabrication or on-site prefabrication for a certain construction site.On-site prefabrication of steel arch support must choose a flat and open site with convenient transportation and access to on-site water and electricity. On-site prefabrication can reduce the transportation links of prefabrication, reduce the loss in the handling process, and reduce the project cost.
The prefabrication procedure of the steel arch support member is: preparing sand and gravel material-mixing of fine concrete-pressing the U-shaped groove by the forming machine-demolding and placing and condensing-taking the backing plate and sprinkling water for curing. The mixing ratio of concrete is in accordance with the ratio recommended by the manufacturer. The quantity of materials is controlled by weighing and weighing. Add water with a bucket of specified volume, mix it into dry concrete with a forced mixer, and manually lift it into the mold. The machine is forced to vibrate to form. After the saliva is supported by the bead and removed from the machine, it is pushed to the curing site with a special trolley to be cured. After the concrete is finally set, the steel arch support is turned over and the backing plate is taken out. Regularly sprinkle water. It can be cured at room temperature for 14 days.
steel arch support is widely used in mine u roadways, especially in deep complex roadways and soft coal seam roadways. steel arch support are classified by purpose: steel supports for coal mines, Support Arch for iron mines, steel supports for gold mines, steel supports for copper mines, steel supports for lead-zinc mines, steel supports for railway and highway tunnels, steel for diversion culverts of hydropower stations Bracket.
