Pipe type shed frame supporting structure used for down-hole roadway and tunnel

Abstract

The invention provides a pipe type shed frame supporting structure used for a down-hole roadway and tunnel. The pipe type shed frame supporting structure comprises an arched shed frame wherein the arched shed frame is formed by adopting steel pipes, and the shape of the arched shed frame is consistent with that of the fracture surface of the roadway. Concrete and full-length steel wire rope cages are arranged in the steel pipes of the arched shed frame. The full-length steel wire rope cages are internally stored on the sides, close to the roadway, in the steel pipes and stretch out of pipe openings of the steel pipes, and the steel pipes is filled with the concrete. According to the pipe type shed frame supporting structure used for the down-hole roadway and tunnel, the steel pipes with large diameters are used as the shed frame structure, and the full-length steel wire rope cages are additionally and internally arranged on the sides, close to the roadway, of the steel pipes, so that flexural rigidity of the steel pipes is improved; and while construction requirements are met, potential safety hazards of construction are eliminated, and guarantee is provided for supporting of the soft rock broken roadway.

Description

technical field [0001] The invention relates to a support device for underground roadways and tunnels in coal mines, in particular to a tubular scaffold support structure for underground roadways and tunnels. Background technique [0002] With the continuous development of the national economy, my country's shallow coal resources are gradually depleted under the huge energy demand, and coal mining has turned to deep development. The resulting roadway excavation, support and maintenance are facing great difficulties, especially When the roadway is affected by the structural belt and its surrounding rock is weak and loose, the surrounding rock control of this type of roadway is a major problem in coal mine safety production. [0003] Bolt support is a mature and common support method. With the increase of mining depth, the surrounding rock of the roadway is weak and loose. Due to the constraints of the lithology of the surrounding rock and the position of the roadway, the commo...

AI Technical Summary

Problems solved by technology

However, the cost of U-shaped shed supporting materials is relatively high, and the installation workload is large. When the roadway surrounding rock is unevenly damaged, its bending stiffness is insufficient, and it is difficult to resist local large deformation of the surrounding rock, which causes local buckling deformation of the U-shaped shed support and leads to Failure of the entire arch support structure

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