Coal mine tunnel supporting structure

By designing a coal mine roadway support structure with adjustable width and height, the problem of insufficient adaptability of existing support structures has been solved, achieving safety, stability, and protection within the roadway.

CN223621620UActive Publication Date: 2025-12-02SICHUAN PROVINCE CHUANNAN COAL CO LTD
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Patent Information

Application Number
CN202422340367.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-25
Publication Date
2025-12-02
Estimated Expiration
2034-09-25

AI Technical Summary

Technical Problem

Existing coal mine roadway support structures are difficult to adjust flexibly according to the width and height of the roadway, and lack effective protective measures to prevent rockfall injuries.

Method used

A coal mine roadway support structure was designed, comprising a support sleeve, a lifting rod, a roof, a positioner, and a protective net. The width and height of the roof are adjusted by sliding the support sleeve and the lifting rod, and the position is fixed by the positioner. The protective net on the outside of the roof prevents injury from falling rocks.

Benefits of technology

It achieves flexible adaptation of the width and height of the roof, improves support stability, effectively prevents falling rocks from injuring personnel, and enhances the safety and adaptability of working in the tunnel.

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Abstract

The utility model discloses a coal mine tunnel supporting structure which comprises two supporting loop bars. The lifting rod is connected to the interior of the supporting sleeve rod in a sliding manner; the top plate is arranged at the upper end of the lifting rod; the positioner is arranged on the outer side of the upper end of the supporting sleeve rod; the protective net and the two fixers are arranged on the two sides of the outer end of the top plate respectively. According to the coal mine tunnel supporting structure, the top of the coal mine tunnel is supported through the top plate, the width of the top plate can be adjusted so that the top plate can be matched with the width in the coal mine tunnel, the top plate is supported through the supporting sleeve rod and the lifting rod, and the supporting sleeve rod can slidably ascend and descend in the lifting rod; after the supporting sleeve rod is lifted to a proper position, the position of the supporting sleeve rod can be fixed through the positioner; the protective nets are arranged on the two sides of the outer end of the top plate correspondingly, falling rocks on the top of the coal mine roadway are blocked through the protective nets, and the situation that people in the roadway are injured by the falling rocks is avoided.
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