Goaf filling waste rock wet-spraying and tamping device and goaf filling waste rock filling method

Abstract

The invention discloses a goaf filling waste rock wet-spraying and tamping device and a goaf filling waste rock filling method, and relates to the technical field of mining and filling. The goaf filling waste rock wet-spraying and tamping device comprises a wet-spraying mechanism, a tamping mechanism and a control mechanism, the wet-spraying mechanism comprises a water pump, a regulating valve anda wet sprayer; the tamping mechanism comprises a machine seat, a telescopic rod, a tamping waste rock beam, a swinging arm and a baffle; the control mechanism comprises a controller, a sensor and a start-stop switch, and the water pump is connected with the wet sprayer through a water pipe; and the wet sprayer comprises a connecting pipe, a spraying head and a spraying nozzle, the connecting pipeis arranged in the tamping waste rock beam, the tamping waste rock beam is arranged in the swinging beam, the baffle is arranged at the front end of the tamping waste rock beam, the telescopic rod isarranged at the rear end of the tamping waste rock beam, a spraying opening is formed in the baffle, and a hydraulic connecting rod is arranged between the swinging beam and the machine seat. According to the method of completing goaf filling waste rock wet-spraying and filling by using the goaf filling waste rock wet-spraying and tamping device, the technical problem that wet-spraying and tamping cycle operation is discontinuous in the process of goaf waste rock filling is solved, and the goaf filling waste rock wet-spraying and tamping device and the goaf filling waste rock filling method have the advantages of high construction efficiency, controllable waste rock water contents, high filling body compression ratio and the like.

Description

technical field [0001] The invention relates to the technical field of filling and mining, in particular to a device for spraying and compacting wet rock during goaf filling and a method for filling goaf gangue. Background technique [0002] With the development of coal resources in my country, the problem of "three-down" coal mining is becoming more and more serious. Traditional fully mechanized mining will cause serious surface subsidence, damage and deformation of surface buildings, and seriously affect the surface ecological environment. In this context, in order to liberate the "three down" coal resources, filling mining technology has been applied and developed. Gangue filling mining refers to the method of backfilling coal mining by using wind power, gravity machinery and other power to throw or input coal gangue into the goaf. The current gangue filling mining technology has the problems of low density and less filling volume. To improve the density of filling gangue...

AI Technical Summary

Problems solved by technology

However, this kind of device only physically squeezes the gangue, and improves the compactness of the gangue filling by increasing the lateral load. The gangue compacted by this method in the goaf has a low compression rate, and it is difficult to meet the filling requirements.

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