Device for reducing spring rate of backfilled and sprayed concrete
A rebound rate, No. 1 technology, applied in the field of rebound rate devices, can solve the problems of waste, scattered in the tunnel, increased construction cost of injection concrete, etc., to achieve the effect of convenient disassembly and installation, and reduce the rebound rate
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[0037] Attached below Figure 1-6 The present invention is further described with embodiment:
[0038] A device for reducing the rebound rate of backfilled sprayed concrete, including a steel arch 4, which is composed of a wedge-shaped block arch 7 and a standard block arch 8, and the wedge-shaped block arch 7 and the standard block arch 8 are placed between two The bolts 9 of the arch frame are connected, the steel arch frame 4 acts as a support for the surrounding rock of the tunnel 5, and the combination of the steel arch frame 4, the wedge block arch frame 7 and the standard block arch frame 8 is provided with a second liner of reinforced concrete 6 , the steel arch 4 is provided with a PVC endurance board 1, a crosspiece 2 and a powerful electromagnet 3, wherein the crosspiece 2 is provided with three pieces, the strong electromagnet 3 is provided with six pieces, and the crosspiece 2 is connected with the strong electromagnet 3 , and the PVC endurance board 1, the crosspi...
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