Tunnel face grouting parameter simulation calculation method and device based on extrusion deformation

CN119227203AActive Publication Date: 2024-12-31HEBEI GEO UNIVERSITY
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Patent Information

Application Number
CN202411718064.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-28
Publication Date
2024-12-31
Estimated Expiration
2044-11-28

AI Technical Summary

Technical Problem

The existing technology is difficult to effectively control the stability of palm surfaces in high-ground stress soft rock tunnels. The determination of palm surface grouting reinforcement parameters depends on engineering experience or engineering analogy, and the existing stability evaluation method is not applicable to high-ground stress soft rock tunnels.

Method used

The grouting parameters simulation calculation method of tunnel palm surface grouting based on extrusion deformation is adopted. By calculating the extrusion deformation amount and safety coefficient of tunnel palm surface, the grouting parameters are adjusted to ensure the stability of tunnel palm surface, and quantitative design and evaluation are provided. method.

Benefits of technology

Quantitative design and evaluation of the grouting reinforcement parameters of palm surface grouting and reinforcement in high-level stress soft rock tunnels has been realized, and the stability and construction safety of tunnel palm surfaces have been improved, and it is suitable for high-level stress soft rock tunnels.

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Abstract

The invention provides a tunnel face grouting parameter simulation calculation method and device based on extrusion deformation, and belongs to the technical field of data processing.The method comprises the steps that second extrusion deformation is calculated based on tunnel site area geological data, tunnel section data and grouting parameters; the second extrusion deformation is the extrusion deformation of the tunnel face under the condition of grouting reinforcement of the tunnel face; calculating a second safety coefficient based on the second extrusion deformation amount; the second safety coefficient is used for representing the stability degree of the tunnel face under the condition of grouting reinforcement of the tunnel face; if the second safety coefficient is smaller than or equal to the set threshold value, the grouting parameters are adjusted, and the step of calculating the second extrusion deformation based on the tunnel site area geological data, the tunnel section data and the grouting parameters is executed again; if the second safety coefficient is larger than a set threshold value, a grouting parameter calculation result is output. According to the tunnel face grouting parameter simulation calculation method and device based on extrusion deformation, the stability and construction safety of the tunnel face can be improved.
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Citation Information

Patent Citations

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  • High ground stress soft rock tunnel pedigree design method, terminal and storage medium

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  • Tunnel construction method for penetrating through high-pressure water-rich fault zone through curtain grouting and grout stopping wall

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