Coal mine working face water gushing amount dynamic prediction method based on multi-order power system model

Abstract

The invention relates to a mine water gushing amount prediction method, belongs to the field of mine roof water disaster prevention and control and water resource protection, and particularly relatesto a coal mine working face water gushing amount dynamic prediction method based on a multi-order power system model. The method mainly comprises the steps of constructing a mathematical model of theactual drainage condition water gushing process of the mining area mined working face roof water head, solving the mathematical model of the drainage-free condition water gushing process of the miningarea mined working face roof water head, analyzing main control factors of the working face push-mining roof water gushing process, and researching and developing a multi-order power system model forpredicting the water gushing amount in the working face push-mining process. Based on working face water gushing amount prediction software development and prediction of a multi-order power system model, accurate and dynamic prediction of the coal mine working face water gushing amount is achieved, and the maximum water gushing amount, the normal water gushing amount and the occurrence position most concerned in the field of coal mine water disaster prevention and control are obtained.

Description

technical field [0001] The invention relates to a mine water inflow prediction method, which belongs to the field of mine roof water disaster prevention and water resource protection, and in particular relates to a coal mine working face water inflow dynamic prediction method based on a multi-stage dynamic system model. Background technique [0002] The gradual westward shift of the coal production center is an important strategic layout for energy development in my country, and the Jurassic coal resources are mainly mined in the west. Coal seam mining causes water from the roof aquifer to enter the goaf. First, it brings water damage threats, and second, it causes the loss of groundwater resources. The prediction of water inflow from the roof of coal seam mining can not only provide basic data for the rational design of mine waterproof and drainage systems and the fine formulation of water disaster prevention and control technical schemes, but also provide reference for the...

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Problems solved by technology

[0004] The prediction of water inflow on the roof of coal mine working face is a hot issue, and many scholars have studied it. However, the existing published technical literature and patents on water inflow prediction generally have the problem of poor applicability, which is rooted in the complex geology and hydrogeology. Due to the limitations of understanding of conditions, it is difficult to give a correct physical model for the dynamic changes of groundwater caused by mining activities, and the complex movement of groundwater in space and time during the movement of groundwater to the well.

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