Supporting system and supporting method for tender broken roofs of coal roadways

Abstract

The invention discloses a supporting system and a supporting method for tender broken roofs of coal roadways. The supporting system is characterized in that each support canopy frame comprises two upper canopy legs, two lower canopy legs, a top transverse beam and an arched support beam, the upper ends of the two upper canopy legs of each support canopy frame are fixedly overlapped with the top transverse beam of the support canopy frame, the lower ends of the two upper canopy legs of each support canopy frame are overlapped with the upper ends of the two lower canopy legs of the support canopy frame and then are fastened and connected with the upper ends of the lower canopy legs by clamp cables, the arched support beams are arranged below the top transverse beams, the middles of the arched support beams are overlapped with the middles of the top transverse beams, and two ends of each arched support beam are overlapped with the two corresponding upper canopy legs and then are fastenedand connected with the two upper canopy legs by clamp cables; a metal support net is arranged on the upper portions of the top transverse beams of the multiple support canopy frames, the lower canopylegs of the multiple support canopy frames are fastened and connected with one another by side connectors, and the top transverse beams of the multiple support canopy frames are fastened and connectedwith one another by top connectors. The supporting system and the supporting method have the advantages that the supporting system has excellent setting load, high resistant force can be continuouslyprovided, accordingly, roadway surrounding rock can uniformly deform and can collaboratively deform with surrounding rock, and effects of supporting the coal roadways can be realized.

Description

technical field [0001] The invention relates to a coal roadway support system and a method thereof, in particular to a support system and a support method for a weak and broken roof of a coal roadway. Background technique [0002] With the extensive mining of coal resources, roadway surrounding rock control under various difficult conditions is one of the main factors restricting the safe and efficient mining of coal resources. Especially in southern China, the surrounding rocks of coal roadway roofs are weak, broken and thick, such as composite coal roadway roofs under the influence of structural belts, and coal roadway regeneration roofs under weak cementation conditions. This type of roadway has poor self-stabilization ability and short failure time. It is difficult to form a stable anchoring end with ordinary anchor rod and anchor cable support, so passive support structures such as scaffolding can only be used. The traditional scaffold support lacks sufficient bearing ...

AI Technical Summary

Problems solved by technology

This type of roadway has poor self-stabilization ability and short failure time. It is difficult to form a stable anchoring end with ordinary anchor rod and anchor cable support, so only passive support structures such as scaffolding can be used.

The traditional scaffold support lacks sufficient bearing capacity and initial support force, and it is difficult to form an active support structure system with strong bearing capacity and good integrity, and it is difficult to maintain the stability of the roadway during the mining process

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