Method for predicting mine inflow based on dynamic change of permeability coefficient along with layered mining

Abstract

The invention relates to a method for predicting mine inflow and belongs to the field of mine mining, in particular to a method for predicting mine inflow based on a dynamic change of a permeability coefficient along with layered mining. The space of the mine excavation engineering is organically combined with the time distribution characteristics according to layered mining conditions, the influence of overburden failures on the permeability coefficient of an overlying aquifer caused by the mining is taken into consideration, the dynamic adjustment of the permeability coefficient matching with actual excavation activities in the research area is realized; a relationship between the permeability coefficient and the groundwater numerical model is built, the adjusted parameters can be imported into the simulation model in real time, the dynamic prediction of the water inflow along with coal mining is realized, and the prediction precision of the water inflow is improved.

Description

technical field [0001] The invention relates to a method for predicting mine water inflow, which belongs to the field of mine mining, in particular to a method for predicting mine water inflow based on the dynamic change of permeability coefficient with layered mining. Background technique [0002] The design of mine drainage system needs to refer to the prediction results of mine water inflow, so the prediction technology of water inflow is one of the key technologies for mine water disaster prevention and control. At present, the mineable coal seam thickness of some coal mines is relatively thick, and the full height cannot be mined at one time. The method of layered mining is required. This coal mining method has multiple disturbances on the aquifer above the coal seam, resulting in the prediction of mine water inflow during the exploration stage. There is a large difference from the actual water inflow in the mine, and the actual water inflow also fluctuates greatly with...

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the above-mentioned technical problems existing in the prediction of water inflow in existing mines, and provides a method for predicting water inflow in mines based on the dynamic change of permeability coefficient with layered mining. With the change of mining activities, it can effectively solve the problem of large difference between the predicted value of mine water inflow and the actual value caused by the improper value of hydraulic conductivity

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