A kind of asymmetric support device for gob-side roadway

Abstract

The invention provides an asymmetric support device for roadways along gobs. The asymmetric support device comprises a roadway roof support beam, a roadway side support plate, a roadway side support net, elastic anti-loose assemblies, anchor rope and anchor rod locking assemblies, roadway roof anchor ropes, roadway roof anchor rods, roadway side anchor ropes and roadway side anchor rods. The asymmetric support device has the advantages that the asymmetric support device is provided with the elastic anti-loose assemblies, accordingly, the fastening properties of the anchor rods and the anchor ropes can be effectively improved, and loosening and the like of the anchor rods and the anchor ropes can be prevented; the asymmetric support device is provided with the roadway side support net and the roadway side support plate, and accordingly the roadway side support stability can be guaranteed; the fatigue property of the asymmetric support device can be improved by the anchor rope and anchor rod locking assemblies, the anchor rods and the anchor ropes are effective in fastening performance along with prolonging of the support time, the anchoring effectiveness and stability of the anchor rods and the anchor ropes can be guaranteed, and the support service life can be prolonged.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to an asymmetric support device for a gob-side roadway, which belongs to the technical field of roadway support. Background technique [0002] The use of bolt support in coal mine rock roadways has a history of more than 50 years in China. Bolt support has been used in coal mine rock roadways since 1956, and bolt support began to enter the mining area in the 1960s. However, due to the softness of the surrounding rock of the coal seam roadway, the deformation of the surrounding rock is large after being affected by mining. In addition, the bolt support theory, design method, bolt material, construction equipment, detection means, etc. are not perfect enough, so the development is slow. During the "Eighth Five-Year Plan" period, the former Ministry of Coal Industry took the bolting technology of coal roadway as a key project to tackle key problems. As one of the projects, the fe...

AI Technical Summary

Problems solved by technology

However, when using bolts and cables for asymmetric support of the gob-side roadway at present, although the structure is simple, the reliability is poor, especially as the time prolongs, the bolts and cables are prone to loosening. Moreover, once there is a little looseness, the rock layer is extremely prone to accidents when vibrations occur, which seriously affects the safety and stability of production and threatens the personal safety of workers at all times.

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