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A kind of flexible spraying material for mine roadway support and its preparation method and application

A technology for spraying materials and roadway support, which is applied to shaft equipment, mining equipment, tunnels, etc., can solve the problems of large amount of shotcrete material, high material cost, serious pollution, etc., and achieves high tensile strength and bonding strength. Addressing the effects of large thicknesses, low curing temperatures and flame retardant properties

Active Publication Date: 2022-05-24
赣州创可通科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problems existing in the prior art, to provide a flexible spraying material for mine roadway support and its preparation method and application, to solve the problem of large amount of spraying material used in the mine roadway bolting and spraying support process, and the slurry layer Thickness, high rebound rate, high material cost, dust, serious pollution, poor compactness, easy to fall off and other long-term problems of roadway spray grouting

Method used

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  • A kind of flexible spraying material for mine roadway support and its preparation method and application
  • A kind of flexible spraying material for mine roadway support and its preparation method and application
  • A kind of flexible spraying material for mine roadway support and its preparation method and application

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Embodiment 1-5

[0043] According to the mass fraction of fine aggregate, slag powder, cement-based cementitious material, reinforcing fiber, accelerator and retarder listed in Table 1 below, the component A is prepared by stirring evenly.

[0044] Table 1

[0045]

[0046]

[0047] According to the mass fraction of polymer emulsion, water reducing agent, setting accelerator and diluent listed in Table 2 below, the component B is prepared by stirring uniformly for subsequent use.

[0048] Table 2

[0049]

[0050] According to the mass fraction of Component A and Component B listed in Table 3, according to the application method provided by the present invention, spraying construction is carried out at the cracked closed wall, 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

[005...

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Abstract

The invention relates to a flexible spraying material for mine roadway support, a preparation method and application thereof, and belongs to the technical field of mine roadway support. ) The slag-based anchor shotcrete support spraying material prepared by the present invention is an organic-inorganic hybrid material, which has no volatilization of harmful substances, is safe and environmentally friendly; adopts slag-doped spraying material, develops the effective utilization of slag, and alleviates secondary pollution , reduce costs; the facade and top surface spraying construction does not flow, the construction environment is friendly, without any rebound and dust pollution problems; it has low curing temperature and flame retardant properties.

Description

technical field [0001] The invention relates to a flexible spraying material for mine roadway support, a preparation method and application thereof, and belongs to the technical field of mine roadway support. Background technique [0002] Underground mine mining in my country is facing complex geological conditions, severe mining conditions, rock collapse, geological subsidence, and large land occupation by slag. For example, the deliquescence and weathering of the surrounding rock mass in the coal mine lead to cracking of the coal rock mass, groundwater leakage, air leakage and gas accumulation, etc., which seriously affect the safe production of coal mines; , and contains a variety of harmful components, long-term exposure to the atmosphere leads to soil and water pollution. Shotcrete technology is a relatively mature roadway support technology currently used in mines in my country, including jetting slurry, bolts, steel arches, steel meshes and other support forms. This ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06C04B28/04C04B28/08C04B28/02C04B28/00E21D11/10E21D11/38C04B111/28C04B111/27
CPCC04B28/065C04B28/04C04B28/08C04B28/021C04B28/06C04B28/00E21D11/105E21D11/38C04B2111/00724C04B2111/00155C04B2111/00508C04B2111/28C04B2111/27C04B2201/50C04B14/06C04B18/12C04B16/0641C04B24/06C04B2103/12C04B24/2623C04B2103/302C04B24/045C04B18/08C04B16/0633C04B12/04C04B24/10C04B22/148C04B24/2611
Inventor 张志乾祝静魏宏亮
Owner 赣州创可通科技有限公司
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