A new support system for gob-side entry retaining

By using suspended anchor cables, M-steel strips and anchor mesh combined with roof support, combined with cut-off I-beams, single props and collapsible I-beam retaining walls, the problems of poor support effect, roof subsidence and spontaneous combustion in the goaf of the traditional goaf-side roadway support system have been solved, achieving efficient and safe roadway support.

CN115711144BActive Publication Date: 2025-10-21SHANDONG LINENG LUXI MINING IND CO LTD
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Patent Information

Application Number
CN202211422191.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-11-15
Publication Date
2025-10-21
Estimated Expiration
2042-11-15

AI Technical Summary

Technical Problem

Traditional goaf-side roadway support systems suffer from poor support effects, severe roof subsidence, inadequate isolation of goaf areas, and high risk of spontaneous combustion.

Method used

The ceiling support system adopts a combination of suspended anchor cables, M-steel strips and anchor mesh, combined with cut-top I-beams, single columns, hydraulic supports and retractable I-beam retaining walls, and is further supported by curved shock-absorbing steel plates and sealed flexible curtains to form a comprehensive support system.

Benefits of technology

It improves the stability and safety of roof support, reduces roof deformation and air leakage, lowers maintenance costs, and enhances the protection effect of goaf areas.

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Abstract

The present application relates to a kind of new support systems for gob-side entry retaining, belong to roadway supporting technical field.The suspended ceiling support in the roadway top is by the combined support mode of suspension anchor cable, M steel belt and anchor net to control roof caving, and the interval of top cutting anchor cable is 1m, and top cutting I-beam is installed on top cutting anchor cable, single prop is used below top cutting I-beam, M steel belt is supported by transverse I-beam and hydraulic support, and the side of single prop away from hydraulic support is provided with gangue blocking unit composed of multiple collapsible I-beam gangue blocking supports.The present application has the following beneficial effects: reduce the maintenance cost of gob-side entry retaining, ensure the safety of working face.
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Citation Information

Patent Citations

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    CN101503959A

  • Non-coal-pillar mining method for roof caving roadway forming along goaf by crushing immediate roof

    CN108643907A

  • Gob-side entry retaining telescopic limiting gangue blocking column and using method thereof

    CN108825286A

  • Non-uniform support structure for gob-side entry driving under deep unstable overburden rock and construction method

    WO2018133492A1