Anchoring device, system and method for the combined support of a rock bolt and a profiled steel

By using a combined support device of anchor bolts and steel sections, and connecting them with waist-shaped grooves and fasteners, a support system with high shear resistance and high load-bearing capacity is formed, which solves the problem of insufficient load-bearing capacity in roadway support and achieves effective support and protection of the roadway.

CN116025388BActive Publication Date: 2026-05-08BEIJING CHINA COAL MINE ENG CO LTD +2
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Patent Information

Application Number
CN202211648897.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-12-20
Publication Date
2026-05-08
Estimated Expiration
2042-12-20

AI Technical Summary

Technical Problem

In existing roadway support methods, U-shaped metal supports have limited load-bearing capacity, and anchor bolts have poor shear resistance, making them prone to shearing and breakage during plastic deformation of the surrounding rock, leading to a decrease or failure of anchoring effect.

Method used

A combined support device using anchor bolts and steel profiles is adopted, including supporting steel profiles, a first arc plate, a second arc plate, reinforcing anchor bolts, and supporting anchor bolts. Through the waist-shaped groove design and fastener connection, a support system with high shear resistance and high load-bearing capacity is formed, and the contact area of ​​the roadway top is enhanced by steel mesh.

Benefits of technology

It achieves roadway support with high shear resistance and high load-bearing capacity. It has a simple structure, low cost, and high installation efficiency. It can effectively prevent roadway deformation and breakage and improve the overall support effect.

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Abstract

The application discloses a combined supporting device of anchor rod and section steel, which comprises a supporting section steel, a first arc-shaped plate, a second arc-shaped plate, a reinforcing anchor rod and a supporting anchor rod; the first arc-shaped plate is arranged directly above the second arc-shaped plate, the second arc-shaped plate is supported on the floor of a roadway through the supporting section steel, and a waist-shaped groove is formed on the second arc-shaped plate along the circumferential direction of the arc surface of the second arc-shaped plate; the upper end of the supporting anchor rod is fixed on the first arc-shaped plate, and the lower end of the supporting anchor rod slides in the waist-shaped groove along the circumference of the second arc-shaped plate; and the reinforcing anchor rod is arranged on the lower side of the first arc-shaped plate. The application further discloses a combined supporting system and a combined supporting method based on the combined supporting device of anchor rod and section steel. The combined supporting device of anchor rod and section steel has high shearing capacity and high bearing capacity, improves the roadway supporting strength, and improves the supporting capacity.
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