Method for calculating historical spatial information of high-water-level coal mining subsidence ponding area

Abstract

A spatial information calculation method, a remote sensing method and subsidence prediction are combined; on the one hand, the remote sensing method is used for extracting the ponding boundary of a remote sensing image of a research area; on the other hand, working face prediction parameters and geological mining conditions are used for predicting the ground subsidence basin terrain through a probability integral method. The ponding boundary extracted by the remote sensing image is matched with the predicted subsidence terrain through coordinates, the water level elevation of the ponding area is determined, various spatial information such as the water depth of the subsidence ponding area, the underwater terrain, the ponding area, the ponding volume and the reservoir capacity of the subsidence area are calculated, and an underwater topographic map is drawn. Compared with a traditional subsidence area ponding space information obtaining method, the method is convenient and rapid, high in result precision, capable of calculating past ponding space information data, capable of providing reliable data support for coal mining subsidence area treatment, capable of improving the utilization value of water and soil resources of the coal mining subsidence area, capable of improving the ecological environment of the coal mining subsidence area, and capable of relieving the human-ground contradiction in the coal mining subsidence area.

Description

technical field [0001] The invention relates to the technical field of mining area observation, and relates to a calculation method for historical spatial information of a high water level coal mining subsidence water accumulation area. Background technique [0002] Long-term large-scale and high-intensity mining of coal resources has caused a series of problems such as land subsidence, farmland damage, house cracking, infrastructure damage, and ecological damage. At the same time, after underground mining caused large-scale surface subsidence, affected by factors such as atmospheric precipitation and groundwater seepage, a large area of ​​subsidence water accumulation area was formed on the surface. Mining areas in eastern China are characterized by high underground water levels, thick loose layers, and thick coal seams, and the problem of water accumulation in subsidence areas is particularly serious. At present, for such waterlogged areas formed by coal mining, common go...

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