Coal mine water inrush source mixing proportion calculation and dynamic monitoring method based on conventional hydrochemistry

Abstract

The invention discloses a coal mine water inrush source mixing proportion calculation and dynamic monitoring method based on conventional hydrochemistry, and the method comprises the steps: determining the forming action type of underground water chemical components according to the hydrogeology basis; selecting conventional water chemical ions; carrying out principal component analysis on conventional water chemical ions, and screening and treating principal components; drawing a principal component load diagram, and analyzing the underground water chemical component forming effect represented by each principal component; establishing a linear relationship between the principal component score and each conventional water chemical ion, and calculating the principal component score of eachwater sample; drawing main components of the water sample to obtain a dispersion point graph, determining a confinement triangle according to distribution characteristics of the water sample, analyzing supply sources of three end members according to formation effects of underground water chemical components, and establishing an underground water mixing proportion calculation model; and determining a water inrush source according to the dynamic change characteristics of the water sample mixing ratio. By applying the embodiment of the invention, coal mine water inrush source mixing proportion calculation and dynamic monitoring based on conventional hydrochemistry are realized.

Description

technical field [0001] The invention relates to the field of water source monitoring for water inrush in coal mines, in particular to a method for calculating the mixing ratio of water inrush in coal mines and a dynamic monitoring method based on conventional water chemistry. Background technique [0002] Water inrush in coal mines is one of the important factors that threaten the safe and efficient production of coal mines. Once water inrush occurs in the production process of coal mines, it will not only cause major economic losses, but also threaten the lives of workers. At present, there are many methods for identifying water sources based on the chemical composition of groundwater in various major water inrush aquifers in my country's North China-type coal mining areas, such as fuzzy comprehensive evaluation method, artificial neural network, gray correlation analysis method, support vector machine, etc. This type of method requires different types of training water sam...

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Problems solved by technology

Therefore, it is difficult to determine the threshold value of the hydrochemical characteristics of various water inrush aquifers in actual work, which will directly affect the accuracy of the water inrush source discrimination model

At the same time, the above-mentioned discrimination method only statically studies the hydrochemical characteristics of each water sample point, and fails to consider the dynamic change law of the hydrochemical characteristics of water samples near the water inrush point.

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