Roadway floor heave flexible yielding support device and method

By using a combination of a rigid load-bearing frame with a hollow structure and compressible bags in the treatment of floor heave in roadways, combined with sensor and valve control, flexible and coordinated deformation and recyclability of the support structure and surrounding rock were achieved. This solved the problem of poor coordination between the support structure and the surrounding rock deformation, and improved the treatment effect and economic benefits.

CN122082786BActive Publication Date: 2026-06-26SHANDONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG UNIV OF SCI & TECH
Filing Date
2026-04-24
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing technologies for treating roadway floor heave suffer from poor coordination between the support structure and the surrounding rock deformation, unstable treatment effects, and the inability to reuse the equipment, especially in soft rock roadways.

Method used

It adopts a rigid load-bearing frame with a hollow structure and a compressible bag combination, combined with a crushed stone force transmission layer and a grouting hardening layer. It achieves adaptive pressure relief through pressure sensors and solenoid valves, and provides extreme warning through flow sensors. It can be recycled and reused through crushed stone removal unit and bag refilling unit.

Benefits of technology

It achieves flexible and coordinated deformation between the support structure and the surrounding rock, ensuring stable support effect. Furthermore, it reduces treatment costs through limit warning and reset functions, thereby improving the economic benefits and reliability of roadway floor heave treatment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides a flexible yielding and supporting device and method for roadway floor heave, and relates to the technical field of coal mine roadway supporting. The device comprises a rigid bearing framework, a compressible bag, a gravel force transmission layer, a grouting hardening layer, a gravel removal unit and a bag refilling pressure unit. The compressible bag is filled with compressible buffer medium, and the deformation energy is absorbed by compression when the floor heaves to achieve flexible yielding and supporting; a pressure sensor cooperates with a solenoid valve to maintain the bag pressure within a set range; a flow sensor monitors the medium discharge amount, and triggers an extreme early warning when the threshold is reached; the gravel removal unit quantitatively removes the compacted gravel in the framework to provide space for the bag reset, and the device is recycled by using the downhole pressure pipeline to refill the pressure. The application has the functions of self-adaptive yielding and supporting, extreme early warning and recycling, solves the problems of poor coordination between the existing supporting structure and soft rock large deformation, unstable treatment effect and one-time use of the device, and significantly improves the floor heave treatment effect and economic benefits.
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