Shallow coal seam mining area water flowing fractured zone development height prediction method and system

Abstract

The invention provides a shallow coal seam mining area water flowing fractured zone development height prediction method and system, and the method comprises the steps: dividing mining area basic units, and extracting the coal seam thickness, bed rock thickness, soil layer thickness and coal seam burial depth of each basic unit; dividing an area with both a soil layer and bed rock and an area withonly bed rock in the stratum of the mining area; estimating the development height of the water flowing fractured zone in the only bedrock area to obtain a first estimated result; in the existing soil layer and bedrock area, judging the stratum where the development height top interface of the water flowing fractured zone is located; when the height of the water diversion fissure zone penetratesthrough the bed rock and enters the soil layer, counting water diversion fissure zone height data under the condition, fitting the relation between the water diversion fissure zone development heightinhibition/promotion coefficient and the soil-based ratio, determining the thickness of the water diversion fissure zone penetrating through the bed rock and entering the soil layer, then calculatingthe water diversion fissure zone development height, and obtaining a second predicted result; and synthesizing the first and second predicted results to determine the development height of the water flowing fractured zone of the shallow coal seam mining area.

Description

technical field [0001] The disclosure belongs to the field of preventing and controlling water inrush in mines, and in particular relates to a method and system for predicting the development height of a water-conducting fissure zone in a shallow coal seam mining area. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Shallow coal seam mining areas are rich in coal resources. While large-scale coal mining and consumption bring huge economic benefits, they also destroy the ecological environment such as groundwater systems and ecological landscape patterns, resulting in water resource shortages, biodiversity reduction, and landscape pattern fragmentation. and other ecological environment deterioration. The change of the ecological environment is closely related to the development height of the water-conducting fissure zone formed by coal mi...

AI Technical Summary

Problems solved by technology

If the role of the soil layer in the development height of the water-conducting fracture zone is ignored, the estimation of the development height of the water-conducting fracture zone will produce a large error, which will lead to inaccurate prediction of mine water inflow, and even induce mine water inrush disasters

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