New process for recultivating glebe in mine subsidence area

Abstract

The invention relates to a new method for the land reclamation of mining cave-in areas, which is mainly characterized in that a drain hole is dug at the surface of a subsidence area to underground water layer, and the surface water of the subsidence area is discharged to the underground water layer through the drain hole. A borehole can be dug at the ground to the underground water layer, and the ground waterlogging is discharged to the underground water layer through the borehole. In general case, the water level of the underground water layer is lower than the lowest elevation of the surface subsidence area, and the ground waterlogging can flow to the borehole by gravity to be discharged to the underground water layer. If necessary, a water pump can be adopted to pump the waterlogging that can not flow to the borehole by gravity to the borehole to be discharged to the underground water layer. The invention has the advantages of simple and convenient construction, low cost, capability to restore the original soil ecological environment, economical and reasonable and good effects; thus the function of the method is not only land reclamation but also underground water storage, facilitating the protection of water resource.

Description

technical field [0001] The invention belongs to the technical field of land reclamation in subsidence areas, in particular to a new method for land reclamation in subsidence areas of mines. Background technique [0002] There are many low-lying lands on the earth's surface, some are natural, and some are caused by human factors, such as underground mining of mines (mainly coal mines) causing ground subsidence. When the stagnant water is difficult to drain, the original fertile land will turn into swamps or lakes. It is undoubtedly a huge waste not to mention the increasingly precious land resources. Due to the large amount of subsidence in many mine subsidence areas, the elevation of the subsidence area is much lower than that of the surrounding surface, and it is difficult for ditches to drain effectively; many subsidence areas have a large subsidence area, and it is economically unreasonable to use water pumps for drainage. [0003] The existing land reclamation technolo...

AI Technical Summary

Problems solved by technology

[0004] 1. Large project volume and high cost;

[0005] 2. Insufficient materials for backfilling gangue, and it is impossible to backfill all subsidence areas with soil;

[0006] 3. The surface is re-soiled, the soil quality is difficult to guarantee, and it is difficult to restore the original soil ecological environment

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