Construction machinery for backfilling coal mining roadway

Abstract

The invention discloses a construction machinery for backfilling a coal mining roadway, and belongs to the technical field of coal mining roadway backfilling. The construction machinery comprises a tractor shovel, a crushing machine, a mixer, a belt conveyor and a grouting vehicle; the tractor shovel is used for feeding a filling material to a feeding hole of the crushing machine; a discharging hole of the crushing machine is connected with the feeding hole of the mixer through a chute or in the mode of belt conveying; the discharging hole of the mixer is connected with the tail of the belt conveyor in the mode of belt conveying; a material falling hole of a material failing hopper at the head of the belt conveyor communicates with the feeding hole of a feeding hopper of a concrete pump ofthe grouting vehicle; and a conveying pipeline of the concrete pump communicates with backfilling space in front of a baffle plate through a grouting opening in the baffle plate. The invention provides the machinery for backfilling the coal mining roadway, which can backfill by taking a large amount of coal gangue as a main material of the filling material, and the filling material in a filling area is formed into a filling body through the baffle plate and a hydraulic oil cylinder pushes the baffle plate to extrude the filling body, so that a filling gap is eliminated, and the strength and the compactness of the filling body are greatly enhanced.

Description

technical field [0001] The invention belongs to the technical field of coal mining roadway backfilling, in particular to a construction machine and a construction method for backfilling a coal mining roadway. Background technique [0002] The backfilling of coal mining roadway is to solve the impact of mining subsidence on ground buildings, industrial and agricultural production, and coal gangue piled on the ground to cause harm to the environment, as well as the "three downs" (underwater, under the road, under the building) after coal mining. Backfilling is a common problem faced by the coal industry. [0003] At present, the backfilling of the coal mining roadway after mining is generally carried out by drilling and grouting. Although this method solves the problem of backfilling the goaf, it is easy to form a conical filling body in the goaf and form a huge filling gap, which will lead to the collapse of the goaf and affect the later treatment work; moreover, The utiliz...

AI Technical Summary

Problems solved by technology

Although this method solves the problem of backfilling the goaf, it is easy to form a conical filling body in the goaf and form a huge filling gap, which will lead to the collapse of the goaf and affect the later treatment work; moreover, The utilization rate of coal gangue is not high, causing harm to the environment; the third, even if the filling is complete, but the density and strength of the filling body are not high, it is easy to cause the goaf to collapse and affect the later treatment work

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