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A method and device for predicting the amount of karst water in a North China coalfield mine

A mine and karst technology, applied in the field of mine water inflow prediction, can solve problems such as blindness

Active Publication Date: 2020-07-10
中国煤炭地质总局勘查研究总院
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Problems solved by technology

Fortification or water prevention measures or emergency response to accidents can only be dictated by experience, and blindness is inevitable

Method used

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  • A method and device for predicting the amount of karst water in a North China coalfield mine
  • A method and device for predicting the amount of karst water in a North China coalfield mine
  • A method and device for predicting the amount of karst water in a North China coalfield mine

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the embodiment of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] figure 1 A schematic flow chart of a method for predicting karst water volume in North China type coalfield mines provided by the embodiment of the present invention, as shown in figure 1 shown, including:

[0026] Step 11, obtaining the constant-fall depth well flow data of the unsteady flow well, and obtaining the flow rate of the artesian well according to ...

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Abstract

The embodiment of the invention provides a north China type coal field mine karst water quantity prediction method and device, and the method comprises the steps: obtaining unstable flow well fixed-drawdown well flow data, and obtaining an artesian well flow according to the unstable flow well fixed-drawdown well flow data; obtaining the generalized artesian well limestone section radius and the artesian well fixed-drawdown, and obtaining the gushing water flow according to the artesian well flow, the generalized artesian well limestone section radius and the artesian well fixed-drawdown; andaccording to the gushing water flow, obtaining the accumulated gushing water amount in a preset time period. The north China type coal field mine karst water quantity prediction method and device performs mine confined karst water gushing prediction based on confined karst water elastic release and an unstable flow theory. According to the method, the flow of the gushing water and the total amountof the gushing water in a certain time period are obtained by aiming at a tension fault, a fracture zone and a sinking column with the maximum gushing water probability or the maximum gushing water case, the confinement that the karst gushing water is difficult to predict is broken through, and more scientific, active and effective prevention and control of the karst water of the mine are promoted.

Description

technical field [0001] The invention relates to the field of prediction of mine water inflow, in particular to a method and device for predicting karst water in mines in North China type coalfields. Background technique [0002] The karst water system model and karst hydrodynamic characteristics of North China coalfields determine the basic pattern of the relationship between coal (coal mining) and water (karst water). The mines (working faces) above the monocline parallel and syncline-basin type karst water systems are mostly located in the concentrated discharge area of ​​the karst water system—below the river bed elevation of the spring group, which belongs to the runoff pressure or stagnation pressure area. The hydrodynamic characteristics of karst determine that the risk or probability of water gushing is usually higher than that of other system models, especially compared with monocline reverse karst water systems. A large number of karst water damage cases show that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F17/00
Inventor 傅耀军
Owner 中国煤炭地质总局勘查研究总院
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