Fabricated monomer column group-anti bottom arch shaped ground beam bottom bulge control structure and construction method

By using a prefabricated single-column group-inverted arch-shaped ground beam structure, and by using the inverted arch base and connecting frame to restrict the vertical setting of the hydraulic props, the problem of fixing the hydraulic props in the soft coal seam of the roadway floor is solved, and a stable support effect is achieved.

CN117108321BActive Publication Date: 2026-05-29CHINA UNIV OF MINING & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA UNIV OF MINING & TECH
Filing Date
2023-09-27
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

During the mining process of coal seam working face, it is difficult to fix the hydraulic props in the weak coal seam of the roadway floor. They are prone to sinking and inserting into the base layer or falling off, resulting in poor support effect. Moreover, individual hydraulic props tend to tilt and overturn, making it difficult to achieve effective support.

Method used

The prefabricated single column group-inverted arch ground beam structure is adopted. By combining the inverted arch base, footing and connecting frame, the vertical setting of the hydraulic prop is restricted, and its fixed end is prevented from sinking into the base layer. The connecting frame connects multiple inverted arch bases to prevent tilting and improve the support effect.

Benefits of technology

It achieves stable fixation of hydraulic props, avoids sinking and tilting, improves the support effect of the roadway floor, and simplifies the installation process.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN117108321B_ABST
    Figure CN117108321B_ABST
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Abstract

The application belongs to the technical field of roadway supporting structure, and discloses an assembled monomer column group-inverted arch-shaped ground beam bottom heave control structure and a construction method.The structure comprises a plurality of inverted arch bases arranged along the direction of roadway travel, the inverted arch bases being laid on the roadway bottom coal seam; a plurality of foot supports arranged on the end face of the inverted arch base away from the roadway bottom coal seam, the foot support being provided with a hydraulic prop inside, the foot support being used for limiting the vertical arrangement of the hydraulic prop, and the fixed end of the hydraulic prop being connected with a lock catch; and a connecting frame arranged between the adjacent two inverted arch bases, the adjacent two inverted arch bases being connected and fixed through the connecting frame, and the lock catch and the connecting frame being detachably connected with the inverted arch base.The application can realize the support of the hydraulic prop, avoid the fixed end of the hydraulic prop from being inserted into the base layer or being separated from the base layer, avoid the inclination of the hydraulic prop, improve the supporting effect, and facilitate the installation.
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