Rapid mechanical gob-side entry retaining support system and use method

Abstract

The invention relates to a rapid mechanical gob-side entry retaining support system and a use method. The system comprises an auxiliary support, a filling support and a support pulling oil cylinder which are arranged in a gob-side entry retaining roadway behind end supports, wherein the auxiliary support is a four-pillar supporting type support; the filling support is a U-shaped four-pillar supporting type box support and adopts an asymmetric structure, a work space is formed below a wide top beam on one side close to the gob-side entry retaining roadway, and one side close to a gob consists of an advance gangue blocking plate, a cantilever support top beam and a waste edge top beam. During usage, position adjustment and placement of a formwork support system are performed firstly, and then the hanging construction of a net and a filing bag is performed in the filling support; opposite-pull anchor rods are mounted in the filling bag for reinforced supporting; the filling bag is filledwith a high-moisture material for solidification, and pre-tightening force is applied through anchor rod mounting holes; the construction is finished through support movement step by step. The systemis high in filling efficiency and good in safety, the labor intensity of workers is effectively reduced, and quick and high-strength coal-pillar-free coal mining is realized.

Description

technical field [0001] The invention relates to a gob-side entry retention method, in particular to a gob-side entry retention method suitable for high-strength mining working faces and complex roof conditions. Background technique [0002] Coal pillar-free mining technology can effectively increase coal recovery rate and improve mining efficiency. As a technology of coal pillar-free mining, gob-side entry retaining is beneficial to alleviate the replacement of working face, reduce the generation of coal gangue, and effectively discharge gas from the working face The gush is widely used in the coal mining industry. At present, with the development of coal mining equipment and technology, the technology of gob entry retention has also been greatly developed. The design and manufacture of gob entry retention equipment, the optimization of gob entry retention technology and the use of gob entry retention materials All have improved substantially. Conventional gob-side entry t...

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