Water inflow prediction and calculation method based on hydrogeological model of adjacent mines after mine closing

A technique of hydrogeology, computational methods, used in teaching models, measuring devices, analysis of suspensions and porous materials, etc.

Active Publication Date: 2019-12-13
JIZHONG ENERGY FENGFENG GRP
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Problems solved by technology

At present, the domestic analysis of the impact of mine closure is mainly from the aspects of environmental impact analysis and evaluation and the closure plan, and from the perspective of water prevention and control

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  • Water inflow prediction and calculation method based on hydrogeological model of adjacent mines after mine closing
  • Water inflow prediction and calculation method based on hydrogeological model of adjacent mines after mine closing
  • Water inflow prediction and calculation method based on hydrogeological model of adjacent mines after mine closing

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Embodiment Construction

[0030] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but are not intended to limit the protection scope of the present invention.

[0031] This embodiment provides a water inflow prediction and calculation method based on the hydrogeological model of adjacent mines after the mine is closed.

[0032] 1. Establish a hydrogeological model:

[0033] The method is based on the conditional analysis method, that is, the establishment of the hydrogeological model. The method of establishing the hydrogeological model includes: firstly analyzing the water filling conditions after the mine is closed. When the mine is closed, the mine water level will gradually rise as the mine stops drainage. water level in the main aquifer. Since each coal seam has been basically mined and the roadways of each coal seam are connected, once the mine is closed, the mined-out area and aquifer of each coal seam below the subm...

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Abstract

The invention provides a water inflow prediction and calculation method based on a hydrogeological model of adjacent mines after mine closing. The method comprises the steps: 1, establishing the hydrogeological model of the adjacent mines after mine closing; and 2, predicting and calculating the water inflow based on the hydrogeological model of the adjacent mines after mine closing. The step 1 further comprises the following steps: 11, analyzing a water filling condition after pit closing of the mine; and 12, determining the water filling condition after pit closing of the mine. The boundarycondition in the step 11 comprises that a natural geological boundary of a relatively large fault is used as a boundary; or an artificial technical boundary is taken as the boundary. In the step 1, seepage motion of the hydrogeological model of the adjacent mines after mine closing conforms to the Darcy law of the hydrogeological theory, and in the step 2, a Darcy formula is adopted to predict andcalculate influence of pit closing of the mine on mining of the adjacent mine and the water inflow. The Darcy formula is Q = KIF, wherein Q represents the water inflow in the unit of m3/min, F represents the seepage section area in unit of m2, I represents the hydraulic gradient, and K represents a permeability coefficient.

Description

technical field [0001] The invention relates to the field of coal mine water prevention and control industry, in particular to a method for predicting and calculating water inflow based on a hydrogeological model of an adjacent mine after the mine is closed. Background technique [0002] The method for analyzing the impact on the mining of adjacent mines after the mine is closed and calculating the seepage flow is used in the technical field of coal mine water disaster prevention and belongs to the industry of coal mine water prevention and control. With the mining of coal mines, a large number of mines have been closed due to the exhaustion of resources. In many mining areas, especially the Hanxing mining area, many mines are not bounded by natural geological boundaries such as faults, but by artificial technical boundaries. Analysis from the perspective of hydrogeology , although some mines are different mines, they belong to the same hydrogeological unit. Therefore, once...

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Application Information

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IPC IPC(8): G01N15/08G09B23/40
CPCG01N15/0826G01N15/0806G09B23/40
Inventor 关永强王铁记张朋
Owner JIZHONG ENERGY FENGFENG GRP
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