Construction method for installing large-section arch frame through arch frame installing machine
An arch installation machine and construction method technology, which is applied in shaft equipment, earthwork drilling, wellbore lining, etc., can solve the lack of strength and stability check calculation of the bench, frequent rock loss in the excavation surface, and lack of arch construction methods and other issues, to improve the construction effect, the construction effect is good, and the effect of ensuring the overlap
Inactive Publication Date: 2021-01-15
CHINA RAILWAY 12TH BUREAU GRP +1
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Problems solved by technology
[0002] At present, in the construction of domestic tunnels, due to the fact that there is almost no mechanical equipment available in the process of tunnel arch installation in China, simple self-made platforms are used for construction on site, the edge protection is not in place, and the platform lacks strength and stability checks, relying on loaders It is dragged and driven, which seriously affects the stability of the platform, and has great potential safety hazards; the handling, lifting, and installation of the arch frame are all manual operations, and the labor intensity of the workers is high; during the installation process of the arch frame, all operators are exposed to the Unsupported sections after excavation, especially in the surrounding rock sections of grades IV and V, the rocks on the excavation face often fall off, and the safety risk is high, and there is a lack of a safe, stable and efficient arch construction method
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[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0029] like figure 1 As shown, a construction method for installing an arch with an arch installation machine applied to a large section includes the following steps:
[0030] S1. Construction preparation;
[0031] S2, switch the drive mode, and raise the support cylinder;
[0032] S3, check the excavation surface, and remove dangerous stones;
[0033] S4, measurement and setting out;
[0034] S5, loading connecting bars and steel mesh;
[0035] S6, lifti...
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The invention relates to the technical field of tunnel construction, in particular to a construction method for installing a large-section arch frame through an arch frame installing machine. The construction method comprises the following steps of S1, making preparation for construction; S2, switching driving modes, and raising a supporting oil cylinder; S3, checking an excavation face, and removing dangerous rock; S4, carrying out surveying and setting out; S5, loading connecting ribs and reinforcing meshes; S6, lifting a steel arch frame; S7, carrying out aerial arch frame splicing; S8, carrying out arch frame positioning and detection; S9, welding the connecting ribs and the reinforcing meshes; and S10, after arch frame installation is completed, withdrawing the three-arm arch frame installing machine from a working face. The construction method is high in safety, high in arch frame installation precision and good in construction effect, and effectively improves the construction effect of the large-section arch frame. The construction method is mainly applied to installation construction of the large-section arch frame.
Description
technical field [0001] The invention relates to the technical field of tunnel construction, and more specifically, relates to a construction method for installing an arch with an arch installation machine applied to a large section. Background technique [0002] At present, in the construction of domestic tunnels, due to the fact that there is almost no mechanical equipment available in the process of tunnel arch installation in China, simple self-made platforms are used for construction on site, the edge protection is not in place, and the platform lacks strength and stability checks, relying on loaders It is dragged and driven, which seriously affects the stability of the platform, and has great potential safety hazards; the handling, lifting, and installation of the arch frame are all manual operations, and the labor intensity of the workers is high; during the installation process of the arch frame, all operators are exposed to the After excavation, the unsupported secti...
Claims
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IPC IPC(8): E21D11/40E21D11/18E21D11/15E21D11/14
CPCE21D11/40E21D11/18E21D11/152E21D11/14
Inventor 李天胜赵勇陈星强张隽白国峰李五红骆文学石少帅卫亚科张旭
Owner CHINA RAILWAY 12TH BUREAU GRP