Multi-field coupling monitoring system and method for barrier material crack self-healing process

By using a multi-field coupling monitoring system to monitor the self-healing process of internal cracks in barrier materials in real time, the problem of inaccurate evaluation under multi-field coupling conditions in existing devices is solved, enabling accurate evaluation of long-term service performance, reducing the risk of seepage failure, and improving pollution control.

CN122238102APending Publication Date: 2026-06-19TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TONGJI UNIV
Filing Date
2026-03-11
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing devices are unable to monitor the self-healing process of internal cracks in barrier materials in real time under multi-field coupling conditions, resulting in inaccurate assessment of long-term service performance, increasing the risk of seepage failure, and affecting the effectiveness of pollution control.

Method used

A multi-field coupled monitoring system was designed, including pressure loading, temperature cycling, seepage control and parameter monitoring systems. The system monitors crack structure and strain changes in real time through ultrasonic transducers, fiber optic sensors and water chemistry sensors, and records the data synchronously in conjunction with a data acquisition system.

Benefits of technology

It enables real-time monitoring of the self-healing process of cracks in barrier materials under multi-field coupling environment, accurately assesses their long-term performance, reduces the risk of seepage failure, and improves the effectiveness of pollution control.

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Abstract

This application discloses a multi-field coupled monitoring system and method for the self-healing process of cracks in barrier materials, relating to the field of seepage-proof barrier materials. A hydraulic device is located at the bottom of the pressure chamber's inner cavity, and a reaction frame is located at the top of the pressure chamber. A temperature control coil is installed on the inner wall of the pressure chamber, connected to an external high-low temperature circulating bath via a temperature control circulation pipeline to regulate the sample temperature and conduct freeze-thaw cycle tests. The pressure chamber is connected via pipeline to an external storage tank containing seepage solution, which is pumped into the sample by a constant flow injection pump. Pressure sensors and flow meters monitor the seepage parameters inside the sample. Several ultrasonic transducers are distributed on the outer wall of the pressure chamber to monitor changes in the internal crack structure of the sample. Fiber optic sensors are pre-embedded on both sides of the crack to monitor strain changes near the crack. This scheme can conduct experiments under multi-field coupled conditions such as loading, seepage, and temperature cycling, achieving comprehensive monitoring of the crack seepage-reaction-structural evolution process.
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