Earthwork balance based dike-pond layout method used for coal mining while refilling in coal-mining subsidence

Abstract

The invention relates to an earthwork balance based dike-pond layout method used for coal mining while refilling in a coal-mining subsidence, belonging to the technical field of the mining technique, land utilization and land rehabilitation. The method which is mainly suitable for a single coal layer comprises the steps of: obtaining a subsidence section line of each section by combining probability integral way based coal-mining subsidence prediction with a geographic information system; determining stripping and refilling ranges of multiple earthworks sequentially at equal distances from the edge of a subsidence basin to the center of the subsidence basin based on each subsidence section line, and further estimating an earthwork stripping amount and an earthwork refilling amount within the stripping and refilling ranges; when the earthwork stripping amount is nearly equal to the refilling amount, regarding the determined stripping and refilling ranges as the optimal dike-pond space layout. When determining the optimal earthwork stripping region and the refilling region, the earthwork balance based dike-pond layout method used for coal mining while refilling in the coal-mining subsidence protects and utilizes the land resource to the maximum extent, improves a second plowing rate to the maximum extent, reduces reclamation cost per mu, and ensures harmonious development of exploitation of mineral resources and land protection to create harmonious and green mines.

Description

technical field [0001] The invention belongs to the technical field of mining, land utilization and land reclamation, and particularly relates to the determination of the earthwork stripping area and backfilling area in the process of coal mining in the middle and high water level mining area, and mainly takes the earthwork balance of excavation volume and backfilling volume in the reclamation area as the main assessment index The spatial layout of earthwork stripping and backfilling during ground reclamation during underground mining is optimized and determined. Background technique [0002] According to incomplete statistics, the land area of ​​China's coal mining subsidence has reached 1 million hectares and is still increasing at a rate of about 40,000 hectares per year. The middle and high water level mining areas in central and eastern China are mainly destroyed by accumulated water after land subsidence. A large area of ​​high-quality farmland has been reduced to wate...

AI Technical Summary

Problems solved by technology

In practical projects, the soil sources in areas where water will accumulate are often stripped and stacked nearby through experience, and there is no scientific and theoretical basis for the determination of the reclamation space layout in advance reclamation

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