Fully-mechanized mining gangue-throwing filling hydraulic support and filling method thereof

Abstract

The invention provides a fully-mechanized mining gangue-throwing filling hydraulic support and a filling method thereof. The hydraulic support comprises a gangue filling hydraulic support body withouta tamping mechanism, and a gangue-throwing belt mechanism on the rear portion of the gangue filling hydraulic support body without the tamping mechanism. The gangue filling hydraulic support body without the tamping mechanism is composed of a front top beam, a rear tail beam, a base, four stand columns, four connecting rods and a porous bottom-discharge scraper conveyor, wherein the four stand columns and the four connecting rods are used for connecting the front top beam, the rear tail beam and the base; and the porous bottom-discharge scraper conveyor is hung on the rear tail beam. The gangue-throwing belt mechanism consists of a rear seat, a vertical lifting oil cylinder, a belt conveyor, a horizontal pulling and moving oil cylinder and a rear baffle plate, wherein the inclination angle of the belt conveyor is 10-45 degrees. The filling method comprises the following steps that when coal is cut, a rear scraper gangue leakage hole of the filling hydraulic support is opened, the beltconveyor which is arranged behind the rear scraper gangue leakage hole is started, gangue falls onto the belt conveyor from the gangue leakage hole, and a conveying belt rotates at a high speed to throw the gangue into a goaf for filling. According to the fully-mechanized mining gangue-throwing filling hydraulic support and the filling method thereof, tamping is replaced by throwing, the throwingdistance is long, the throwing height is high, the filling efficiency is high, and the fully-mechanized mining gangue-throwing filling hydraulic support and the filling method thereof are widely applied to the fields of coal mine filling mining, gob-side entry retaining and the like.

Description

technical field [0001] The invention belongs to the field of coal mine filling and mining, and in particular relates to a hydraulic support for fully mechanized mining dumping and filling and a filling method thereof. Background technique [0002] Coal gangue is a kind of solid waste discharged during the coal mining and washing process. my country's coal gangue has accumulated more than 5 billion tons, and it is still increasing at a rate of 300-350 million tons per year. By 2020, the annual discharge of coal gangue in the country is expected to increase to more than 729 million tons. A large amount of coal gangue stockpiling not only wastes land resources, but also causes spontaneous combustion, rain, mud, etc., causing serious harm to the environment. The filling coal mining method of disposing coal gangue in the goaf of the working face can not only reduce the discharge of solid waste in coal mines, but also reduce mining subsidence disasters and improve the recovery ra...

AI Technical Summary

Problems solved by technology

Because the tamping mechanism needs to push the top back and forth many times to tamp and push the filling material up, the filling efficiency is low, and the coal mining production is affected.

The annual output of conventional gangue filling working face is 500,000-600,000 tons / year. For modern large-scale mines, the annual output of gangue can reach 2 million tons / year. The conventional gangue filling method is difficult to meet the needs. It is necessary to develop a fast and efficient gangue filling method. Hydraulic support and filling method

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