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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

Active Publication Date: 2020-08-14
赣州创可通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address the problems existing in the prior art, to provide a flexible spraying material for tunnel roadway support and its preparation method and application, mainly to solve the problem of the thickness of the spraying layer, the return of the spraying layer, and the There are long-term problems in spraying such as high elastic rate, high material cost, serious dust pollution, long curing time, poor compactness and easy falling off.

Method used

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  • Flexible spraying material for tunnel roadway support and preparation method and application thereof
  • Flexible spraying material for tunnel roadway support and preparation method and application thereof
  • Flexible spraying material for tunnel roadway support and preparation method and application thereof

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Effect test

Embodiment 1-5

[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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Abstract

The invention relates to a flexible spraying material for tunnel roadway support and a preparation method and application thereof, and belongs to the technical field of tunnel roadway support. Vertical face and top face spraying construction does not flow, the construction speed is high, the construction environment is friendly, and any springback and environmental pollution problems are avoided;a spraying material can be subjected to long-distance spraying construction through conventional spraying equipment, the safety distance of manual operation is long, the time is short, and the construction process is safer and more reliable; and the material curing speed is high, the tensile strength and the bonding strength are increased rapidly, the problems that a guniting layer is large in thickness, prone to falling off and cracking and needing to be maintained repeatedly are solved, and the technology is particularly suitable for supporting and reinforcing, air leakage preventing and water leakage preventing treatment of key positions of tunnels or positions where surrounding rock is seriously broken.

Description

technical field [0001] The invention relates to a flexible spraying material for tunnel roadway support, a preparation method and application thereof, and belongs to the technical field of tunnel roadway support. Background technique [0002] With the rapid development of subways in first- and second-tier cities, the construction of regional long-distance water diversion and water diversion projects, and the planning and gradual construction of sponge city corridors, a large number of tunnels and other underground projects need to be developed and constructed. China has become a veritable tunnel and underground Engineering powerhouse. The tunnel is a complex system composed of surrounding rock and supporting structure. The difference in geological conditions makes the surrounding rock have different stable states. Due to the extremely complex and diverse geological conditions in my country, it is difficult for the surrounding rock to spontaneously construct when the tunnel p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B28/26C04B28/04C04B28/08C04B28/34C04B28/02
CPCC04B28/06C04B28/26C04B28/04C04B28/08C04B28/021C04B28/34C04B2111/00155C04B2111/00732C04B18/12C04B18/141C04B14/386C04B22/10C04B24/06C04B24/2623C04B2103/302C04B24/045C04B7/02C04B18/142C04B24/18C04B14/068C04B14/42
Inventor 祝静张志乾魏宏亮
Owner 赣州创可通科技有限公司
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