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Mold spraying device and mold spraying technology

A technology of equipment and formwork, applied in the field of tunnel mold spraying equipment, to achieve the effects of improving control accuracy, reducing occupational hazards, and shortening the construction period

Pending Publication Date: 2020-06-02
SICHUAN LANHAI ENG EQUIP MFG CO LTD
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  • Description
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  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to: aim at the above existing problems, provide a tunnel mold spraying equipment, which mainly solves the problems of mechanization, standardization and standardization of the initial support in the tunnel construction process; effectively avoids the concrete rebound in the spraying process problems and improve the environmental quality of the construction site

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  • Mold spraying device and mold spraying technology
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  • Mold spraying device and mold spraying technology

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Embodiment Construction

[0053]All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0054] Any feature disclosed in this specification (including any appended claims, abstract), unless otherwise stated, may be replaced by alternative features that are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0055] The overall idea of ​​the mold spraying equipment for tunnels of the present invention is to form a mold cavity on the excavated rock surface through a formwork mechanism, and then spray concrete into the mold cavity to make the concrete solidify rapidly in the mold cavity to form an initial support layer.

[0056] Therefore, the tunnel mold spraying equipment of the present invention includes a nozzle assembly, a template mechanism and an injection system. Dur...

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Abstract

The invention discloses a tunnel mold spraying device and mold spraying method, and belongs to the technical field of tunnel construction. The tunnel mold spraying device comprises a sprayer assembly,a template mechanism and an injection system. In the tunnel construction process, the template mechanism is matched with a tunnel excavation rock face to form a mold cavity, the sprayer assembly is arranged above the mold cavity, and a sprayer faces the mold cavity. The sprayer assembly is connected with the injection system, and concrete filled with an accelerator is pumped to the sprayer assembly, and the sprayer assembly injects the concrete into the mold cavity at an angle not perpendicular to the rock face, so that the concrete solidifies in the mold cavity to form a support layer. According to the device, the problem of concrete rebound in the grouting process is effectively solved, and the environmental quality of a construction site is improved.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a tunnel mold spraying equipment. Background technique [0002] In the initial support construction of the tunnel, the construction method of directly spraying concrete on the excavation surface is adopted, and the spraying concrete method is divided into two types: mechanical arm spraying and manual spraying. The current direct shotcrete construction method has the following disadvantages: [0003] The rebound rate is high. Now there is 20%-40% rebound in the construction process, and the rebound material cannot be recycled, resulting in great waste, which is the main reason for the high construction cost. [0004] The amount of quick-setting agent is large, and the construction method of direct spraying concrete requires that the concrete needs to be bonded to the excavation surface within a short time after contacting the excavation surface, and it must also be guaranteed n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10
CPCE21D11/105E21D11/102E21D11/107
Inventor 蓝传雯
Owner SICHUAN LANHAI ENG EQUIP MFG CO LTD
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