A sprayed concrete device for tunnel construction with reduced rebound rate

A technology for tunnel construction and rebound rate, which is used in tunnels, tunnel linings, shaft equipment, etc., can solve the problems of waste, scattered in the tunnel, and increased construction costs of injection concrete, so as to reduce the rebound rate, simplify the structure, and avoid the The effect of sputtering

Active Publication Date: 2020-12-01
GUANGDONG NO 2 HYDROPOWER ENGINEERING COMPANY LTD +1
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Problems solved by technology

In the actual construction on site, when the compressed air sprays the mixture of concrete mixture and water to the surrounding rock at a certain distance and angle at a certain speed, part of the mixture rebounds when it encounters the surrounding rock, and the concrete mixture is scattered in the tunnel. , not only causes waste, but also requires more manpower to clean up, which aggravates the increase in the construction cost of sprayed concrete

Method used

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  • A sprayed concrete device for tunnel construction with reduced rebound rate
  • A sprayed concrete device for tunnel construction with reduced rebound rate
  • A sprayed concrete device for tunnel construction with reduced rebound rate

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Embodiment Construction

[0040] Attached below Figure 1-5 The present invention is further described with embodiment:

[0041]A spraying concrete device for tunnel construction with reduced rebound rate, the main body is supported by a steel arch 1, including an anti-splash mechanism 2 arranged on the steel arch 1, and the movement direction of the anti-splash mechanism 2 is along the The moving direction of the slurry anti-sputtering mechanism is 200°, the filling direction of the mixture is along the moving direction of the slurry 100°, and four powerful electromagnets 3 are arranged in the anti-sputtering mechanism 2, and the anti-sputtering mechanism 2 includes: arc tube 21. The activity is set on the steel arch 1. Specifically, when working, the sealed cavity formed by the arc tube 21 and the powerful electromagnet 3 can prevent the rebound of the mixture in the early stage; the No. 1 anti-sputter plate 22, Set on the upper end face of the arc tube 21, the No. 1 anti-sputter plate 22 is provide...

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Abstract

The invention relates to a concrete spraying device for tunnel construction and capable of reducing resilience. The concrete spraying device for tunnel construction and capable of reducing resiliencecomprises an arc-shaped pipe, a first anti-sputtering plate, a second anti-sputtering plate, a third anti-sputtering plate, a movable insert, an insertion groove, an insertion rod, fixing adsorption mechanisms, a first magnet, a first gasket, a second gasket, a second magnet, a movable groove, a movable plate, a movable rod, a movable through hole and buffer assemblies. According to the concrete spraying device for tunnel construction and capable of reducing resilience, the arc-shaped pipe and the strong electromagnet combination structure are additionally arranged, and a closed cavity is formed through the synergistic effect of the arc-shaped pipe and the strong electromagnets, so that during specific construction, a relatively closed environment is created for sprayed concrete mixture, the sprayed rebound material is automatically collected in the closed environment, and the concrete mixture is sprayed and formed in the closed environment. Therefore, the resilience rate of the backfilled sprayed concrete can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of tunnel construction equipment, in particular to a spraying concrete device for tunnel construction with reduced rebound rate. Background technique [0002] Tunnel engineering is a common engineering project in various infrastructure projects. Under adverse geological conditions, the combined support method of steel arch frame + steel mesh + anchor rod + sprayed concrete is a common support method. Widely used in various tunnel projects. [0003] As a support technology for tunnel construction, sprayed concrete is one of the three major elements of the new Austrian method. It uses compressed air as the power to combine the concrete mixture mixed with accelerator and water into a slurry, and spray it onto the rock wall. The fine-grained concrete formed on the ground and quickly condensed has the functions of supporting the surrounding rock, filling and strengthening the surrounding rock, covering the surro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10
CPCE21D11/10
Inventor 赵雅玲阳争荣谢祥明徐文秀金永就王应龙甘大钦胡江涛郑莉杨浩彬
Owner GUANGDONG NO 2 HYDROPOWER ENGINEERING COMPANY LTD
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