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A shotcrete equipment for filling tunnel pre-cut grooves

A pre-grooving and spraying technology, applied in tunnels, mining equipment, tunnel lining, etc., can solve problems such as cavities and corner vacancies

Active Publication Date: 2019-06-14
CHINA RAILWAY CONSTR HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the problem of cavities and vacancies in the corners of the pre-cut concrete slab poured by the pouring trolley in the prior art

Method used

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  • A shotcrete equipment for filling tunnel pre-cut grooves
  • A shotcrete equipment for filling tunnel pre-cut grooves
  • A shotcrete equipment for filling tunnel pre-cut grooves

Examples

Experimental program
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Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing.

[0023] Such as figure 1 As shown, the grouting equipment 1 for filling the tunnel pre-cut groove includes a support 2 and a grouting device 3 installed on the support 2 . Arched tracks 22 are arranged on the bracket 2 . The shape of the track 22 matches the shape of the arcuate pre-cut groove 101 which has been cut in advance. The arch is usually a round arch. The pre-groove 101 may be formed by cutting the formation 100 with a tunnel pre-groove machine. The grouting device 3 can walk along the arched track 22, and the grouting device 3 is provided with a nozzle 32 extending forward. The extension direction of the spray head 32 is perpendicular to the track 22 . After the nozzle 32 is inserted in the pre-cut groove 101, and when the grouting device 3 is walked along the track 22, the nozzle 32 can spray cement slurry into the arched pre-cut groove 101, and the nozzle 3...

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Abstract

The invention relates to spouting equipment for filling a tunnel precutting trough. The spouting equipment comprises a bracket with an arched rail, and a spouting device; the spouting device comprises a base which travels along the rail and a spray head which is fixed relative to the base, and extends in a direction perpendicular to the rail direction. The spouting equipment can ensure that a cavity appears inside the precutting trough and a corner part is not vacant, so that compactness of concrete and integrity of the structure are guaranteed.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a concrete spraying equipment. Background technique [0002] Before tunnel excavation, pre-support and pre-reinforcement are required to ensure the stability and safety of the excavation surface. There is a pre-support method, which is to excavate the arched outer contour of the tunnel in advance to form an arched groove, and then pour concrete into the groove. After the concrete reaches strength, an arch-like pre-supported structure is formed. Under the protection of the pre-support structure, the excavation of the tunnel will be carried out. [0003] The existing concrete pouring equipment is generally a concrete pouring trolley, on which an arm frame is installed, and the arm frame is adjusted to align the concrete outlet with the pre-cut groove, and the concrete is poured into the pre-cut groove again. [0004] However, when using a concrete trolley for pouring, in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05B13/04B05B15/656E21D11/10
CPCB05B3/14B05B15/628E21D11/105
Inventor 刘飞香程永亮郑大桥田泽宇黄开鹏廖碧波陈维政
Owner CHINA RAILWAY CONSTR HEAVY IND
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