Method for advanced forecasting of roof separation water disaster of stope based on multi-source information fusion

Abstract

The invention discloses a method for advanced forecasting of a roof separation water disaster of a stope based on multi-source information fusion. The method comprises the following basic steps: determining main control factors affecting the roof separation water disaster of the stope; building thematic maps of all the main control factors; evaluating all the main control factors by adopting a level analysis method and calculating the influence weight of each factor on the roof separation water disaster; normalizing the influence weight values of all the factors, and performing composite superposition on the thematic maps of all the main control factors after normalization by adopting a GIS space composite superposition function to form a stope roof separation water disaster dangerousness evaluation map; counting and analyzing roof separation water disaster dangerousness indexes and determining sub-region threshold values so as to form stope roof separation water disaster dangerousness evaluation sub-region maps. By adopting the method disclosed by the invention, advanced prediction and forecasting of the roof separation water disaster of the stope can be realized; corresponding prevention measures can be taken according to the dangerousness level of the roof separation water disaster; occurrence of roof separation water disaster accidents is prevented; safe backstopping of a working face is guaranteed.

Description

technical field [0001] The invention relates to the field of coal mining, in particular to a method for advanced forecasting of stope roof abscission layer water damage based on multi-source information fusion. Background technique [0002] Water inrush is one of the four major disasters in coal mines, and it is a major coal mine disaster alongside gas accidents. In recent years, with the continuous increase of coal production in our country, the increase of coal mining depth, and the mining of multiple coal seams, a special type of water damage - overlying strata detachment water damage has begun to appear. In Chongqing Nantong Coal Mine, Shandong Jining No. 2 coal mine, Huaibei Haizi Coal Mine, Yangliu Coal Mine, and Huainan Xinji No. 1 Coal Mine have experienced typical abscisive water surges. Due to the characteristics of large instantaneous water volume and great harm during the abscisive water inrush, It often leads to flooding of the working face, and even casualties...

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Problems solved by technology

[0004] Therefore, how to avoid the occurrence of water damage from the separation layer on the roof of the coal mining face is very important for the safe mining of coal mines. At present, the prevention and control of water damage from the separation layer is mainly realized through the construction of "interception holes" or "diversion holes" for the separation layer water underground. However, due to the lack of qualitative or quantitative evaluation and analysis of the risk of water damage in the stope roof abscission layer, the prevention and control of abscission water damage has a certain degree of blindness

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