Grouting method based on graphene cement-based material in deep underground space

Graphene-based cementitious grouting materials were prepared by combining ultrasonic atomization dispersion and mechanical stirring technology, which solved the problems of fluidity and dispersion of cement-based grouting materials in complex geological scenarios, achieving efficient tunnel grouting reinforcement and seepage prevention, and reducing construction costs and energy consumption.

CN121952602APending Publication Date: 2026-05-01CHINA RAILWAY 12TH BUREAU GRP CO LTD +3
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Patent Information

Application Number
CN202610135778.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-30
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Existing cement-based grouting materials suffer from insufficient fluidity in complex geological scenarios, poor strength and density after hydration, making it difficult to fully fill rock fissures and limiting the grouting reinforcement and seepage prevention effects. Graphene nanomaterials are also difficult to disperse uniformly in cement-based systems, restricting their large-scale application in tunnel grouting projects.

Method used

Graphene dispersion was prepared using an ultrasonic atomization dispersion device and mechanical stirring combined with other technologies. The dispersion was then combined with cement-based materials and delivered as graphene-based cement grouting material through a grouting pipe. The grouting process was monitored and quality was tested to ensure uniform distribution and efficient dispersion of graphene in the cement matrix.

Benefits of technology

It significantly improves the fluidity and pumpability of cement-based grouting materials, enhances the reinforcement and seepage prevention of surrounding rock, reduces grouting resistance and energy consumption, optimizes the number of boreholes and construction costs, and improves the stability and durability of tunnel structures.

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Abstract

The invention relates to the technical field of tunnel grouting construction, in particular to a grouting method based on a graphene cement-based material in a deep underground space. The preparation method comprises the following steps: S1, preparing graphene dispersion liquid; s2, taking the graphene dispersion liquid prepared in S1 as a raw material, and mixing cement and an additive to prepare a graphene cement-based grouting material; s3, grouting holes are formed in the to-be-grouted area of the tunnel, drilling operation is conducted, and grouting pipes matched with the grouting holes in size are installed; s4, a grouting pipeline is subjected to sealing detection, and the graphene cement-based grouting material prepared in the S2 is injected into a grouting hole through the grouting pipeline; and S5, the grouting process is monitored, the grouting quality is verified through a preset detection method after grouting is completed, and grouting is completed if preset requirements are met. According to the construction method, the graphene nanomaterial is innovatively applied to the field of traditional tunnel grouting, and the grouting process is improved. The method is mainly applied to the aspect of graphene cement-based material tunnel grouting.
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