Landfilling system for mining area restoration and landfilling process of system

Abstract

The invention discloses a landfilling system for mining area renovation and a landfilling process of the system, and belongs to the technical field of coal mine pit backfilling. The landfilling systemcomprises an advancing system, a vibration feeding system, a crushing and conveying system, a screening and distributing system, a grinding system and a tamping system; and the advancing system is arranged on the pit face of a mine pit, the vibration feeding system is arranged in the middle of the top of the advancing system, the crushing and conveying system is arranged at the discharging end ofthe vibration feeding system, the screening and distributing system is installed on the lower portion of the discharging end of the crushing and conveying system, the grinding system is arranged between the crushing and conveying system and the screening and distributing system, and the tamping system is arranged at the end, away from the grinding system, of the advancing system. By means of allthe arranged systems, vibration feeding, crushing, screening and distributing, paving and tamping operation can be conducted on backfill materials, the materials can be backfilled into the mine pit more tightly and compactly, and the serious consequence that filling materials in a backfill area are too loose, and consequently land subsidence is caused is prevented.

Description

technical field [0001] The invention relates to the technical field of coal mine pit backfilling, in particular to a landfill system and a landfill process for mine restoration. Background technique [0002] Coal mine goaf backfill Coal mine goaf refers to the cavity or cavity left after the mining of underground coal or coal gangue in the process of coal mine operation. If the coal mine goaf is not reinforced in time and is not backfilled, it will collapse after a long time, causing ground subsidence, forming a subsidence pit on the surface, and making farmland impossible to cultivate. According to survey statistics, over the years the area of ​​land subsidence due to mining in our country has reached 10,000 mu, and every 10,000 tons of coal mined will have mu of ground facing subsidence. At present, coal gangue backfilling is mainly used for backfilling coal mine goafs in my country. Coal gangue is solid waste discharged during the coal mining process and coal washing pr...

AI Technical Summary

Problems solved by technology

[0003] In the traditional technology, for the landfilling of pits in coal mining areas, the muck and gravel are directly dumped into the mine pit by the muck truck, and then the muck and gravel for backfilling are slowly pushed to various places by bulldozers, dump trucks, excavators, etc. The area to be buried is then rolled and tamped with a compactor, so that large-scale slag and gravel are backfilled into the pit backfill area, which will not only lead to unstable air strikes between the backfill materials, which are relatively sparse, but also have a very high backfill efficiency. Slow, takes a lot of time to level the cloth

Even if some mining pit areas use crushing stations to crush the dregs and gravels that will be backfilled, and then transport them to the site for dumping, this will increase the hazards of dust during transportation, which is not environmentally friendly and greatly reduces work. efficiency, and some mine areas are limited, and it is not suitable for multiple large-scale machines to operate at the same time, which is very inconvenient, so we need to design a flexible operation, wide application range, high landfill efficiency, good landfill effect, and good landfill A device and a landfill method with low burial operation cost, uniform and compact distribution of backfill muck and gravel

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