Double-response multi-repair leaking stoppage device for closed wall roof contact and using method

Through the physical response mechanism of the double-headed capsule bag and the partitioned flexible capsule bag, the chemical reaction of foamed expansion material and water is used to solve the problem of top compactness and self-repair of the sealed wall, achieving a reliable leakage plugging effect of the sealed wall.

CN120466017APending Publication Date: 2025-08-12ZHALAI NUOER COAL IND CO LTD +1
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Patent Information

Application Number
CN202510582200.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-07
Publication Date
2025-08-12

AI Technical Summary

Technical Problem

The existing sealed walls have defects in the density of the top and structural self-repair, resulting in the formation of air leakage channels and the increase in the air leakage coefficient. The electronic instruments are not sensitive in the underground environment and cannot be effectively repaired.

Method used

The double-headed capsule bag and partitioned flexible capsule bag structure is adopted, and the chemical reaction of foam expansion plugging material and water is used to achieve full physical response through air pressure equilibrium, and the gaps in the sealed wall roof panel are actively or passively repaired, and the leakage is plugged by foaming characteristics.

Benefits of technology

It realizes the timely repair of air leakage channels under mining stress in a closed wall, ensures the air tightness and reliability of the closed wall, and avoids the failure of electronic instruments in the underground environment.

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Abstract

The invention discloses a closed wall roof contact double-response multi-repair leaking stoppage device which comprises a double-end bag, the double-end bag is arranged in a top plate, and the double-end bag is filled with gas; a partition flexible bag is arranged at the position, close to the top plate, in the closed wall, a foaming expansion plugging material is arranged in the partition flexible bag, the partition flexible bag is filled with gas, and each containing cavity of the partition flexible bag is connected with the water storage device. When the top plate of the airtight wall is broken due to mining-induced stress, the stress can damage the containing cavities corresponding to the double-end bags and / or the partition flexible bags in the top plate, air leakage is caused, water in the water storage device can enter the partition flexible bags to chemically react with the foaming expansion leaking stoppage materials, and therefore the broken top plate of the airtight wall is repaired. The invention further discloses a using method of the sealing wall roof-contacted double-response multi-repair leaking stoppage device, and the sealing wall roof-contacted double-response multi-repair leaking stoppage device conducts repair and leaking stoppage on the sealing wall roof gap in time through active response or passive response and by means of the foaming characteristics of the foaming expansion leaking stoppage material and water.
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Citation Information

Patent Citations

  • Device and method for roof contact and repair of pre-buried closed wall

    CN118757222A