Method for testing grouting curtain model system for underground pipeline vibration control

Through the grouting curtain model test system, using similarity theory and control experiments, the grouting material ratio is optimized and the protective effect of the grouting curtain is evaluated. This solves the problems of the passivity and construction difficulty of underground pipeline vibration control in existing technologies, and achieves effective vibration reduction and safety protection of underground pipelines.

CN119470088BActive Publication Date: 2025-09-09JIANGHAN UNIVERSITY
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Patent Information

Application Number
CN202411637262.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-15
Publication Date
2025-09-09
Estimated Expiration
2044-11-15

AI Technical Summary

Technical Problem

Existing vibration control technologies in urban underground pipelines have problems such as strong passivity, limited protection effect, high cost, and great construction difficulty. Grouting reinforcement technology lacks systematic research and insufficient understanding of vibration reduction mechanisms, making it difficult to effectively reduce the risk of vibration damage under dynamic loads such as blasting.

Method used

A grouting curtain model test system was used to produce a test model based on similarity theory, select appropriate fill materials and buried pipelines, arrange a measurement system, and conduct control experiments to evaluate the protective effect of the grouting curtain. This included reserving grouting positions in the test chamber, using a dynamic signal acquisition system to record data during the blasting process, and optimizing the grouting material ratio to form a shock-absorbing curtain.

Benefits of technology

The study systematically revealed the vibration reduction mechanism of grouting curtains in the vibration control of urban underground pipelines, achieved effective suppression of underground pipeline blasting vibrations, improved the scientific nature of the experiment and the accuracy of the data, provided a theoretical basis and technical support, and significantly reduced the risk of vibration damage to underground pipelines.

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Abstract

This invention proposes a method for testing a grouting curtain model system for underground pipeline vibration control, relating to the fields of underground engineering and blasting engineering technology. The method includes: constructing a test model based on similarity theory, including determining a geometric similarity ratio, constructing a model test box with a shock-absorbing boundary, and reserving grouting locations within the test box; selecting model test materials, including selecting fill materials appropriate to the project site, determining buried pipeline specifications, preparing explosive packs for simulated blasting, and preparing grouting curtain materials according to a predetermined ratio; arranging a measurement system and conducting tests, including arranging strain measurement points on the pipeline surface, deploying acceleration sensors and earth pressure sensors in the soil, and using a dynamic signal acquisition system to record measurement data during the simulated blasting process. This invention systematically reveals the vibration reduction mechanism of grouting curtains in controlling blasting vibration in urban underground pipelines, providing a theoretical basis and technical support for urban infrastructure safety.
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