Flexible spraying material for tunnel roadway support and preparation method and application thereof
A technology of spraying materials and roadway support, which is applied in the field of tunnel roadway support, can solve the problems of high material cost, long curing time, dust pollution, etc., and achieve the effects of fast curing speed, friendly construction environment and long safety distance
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[0043] According to the mass parts of cement-based material, fine aggregate, slag powder, reinforcing fiber, accelerator and retarder listed in Table 1 below, the component A was prepared by stirring evenly for use.
[0044] Table 1
[0045]
[0046]
[0047] According to the mass parts of the polymer emulsion, water reducing agent, quick-setting agent and diluent listed in Table 2 below, the component B was prepared by stirring uniformly for future use.
[0048] Table 2
[0049]
[0050] Using the components provided in Table 1 and Table 2, according to the application method provided by the present invention, spraying construction is carried out on the surface of the surrounding rock of the tunnel, and the spraying speed is 0.5m 2 / min, the spraying distance is 2m, the thickness of each spraying is about 2-5mm, the number of spraying is 2 times, and the spraying interval is 30min. The performance indicators are listed in Table 3.
[0051] table 3
[0052]
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