A method for predicting water inflow in fully mechanized caving face based on analytical method

Abstract

The invention discloses a method for comparing and forecasting the water inflow of a fully mechanized work face based on an analytical method. The method includes the steps that firstly, the water diversion fissure zone height of a forecasting water face and a comparison work face is obtained; secondly, relevant parameters of the forecasting water face and the comparison work face are determined;thirdly, the proportionality coefficient between the forecasting work face water inflow Q1 and the comparison work face water inflow Q0 is determined based on the analytical method; and fourthly, thewater inflow of the fully mechanized work face is forecasted. By means of the method for comparing and forecasting the water inflow of the fully mechanized work face based on the analytical method, the water inflow of the fully mechanized work face is used for forecasting the water inflow of the fully mechanized work face based on the analytical method, the nonlinear relationship between the waterinflow and the thickness of a filled water bearing strata is taken into consideration, the forecasting result is more accurate, a reasonable basis is provided for fortification of the work face and adraining system of a mine, the capital investment cost of the mine is saved, and safe and efficient production of the mine is ensured.

Description

technical field [0001] The invention belongs to the technical field of water disaster prevention and control in coal mining, and in particular relates to a method for predicting the water inflow of a fully mechanized caving face based on an analytical method. Background technique [0002] With the gradual westward shift of the strategic center of coal resources in my country, the mining of Jurassic coal seams in the west has extended from shallow to deep, and the accurate prediction of roof water inflow is facing more severe tests. At present, most of the mines mining deep Jurassic coal seams are new mines, and the deep Jurassic coal seams have not yet been exploited on a large scale. The degree of hydrogeological exploration in mining areas is generally low, and the obtained hydrogeological parameters are very limited. The traditional estimation of water inflow mainly includes analytical method, numerical method, hydrogeological condition comparison method and statistical m...

AI Technical Summary

Problems solved by technology

The traditional estimation of water inflow mainly includes analytical method, numerical method, hydrogeological condition comparison method and statistical method, etc. However, in the absence of reliable hydrogeological parameters, the traditional estimation method often differs greatly from the actual situation.

When the predicted value is large, the drainage system will be idle; when the predicted value is small, it is easy to cause roof water damage accidents

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