Method for evaluating risk of water damage from strata water inrush of overlying strata in mining area

• Main Authors: FAN, Kaifang, LI, Wenping, WANG, Qiqing, LI, Xiaoqin, ZHAO, Dongliang
• Format: Patent
• Language: English
• Published: 23.01.2020
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

The present invention relates to a method for evaluating the risk of water damage from strata water inrush of overlying strata in a mining area, belonging to prevention and control of water damage in coal mining and solving the problem that the prevention and control of water damage from strata water inrush has a certain blindness caused by the fact that the prevention and control of water damage from strata water inrush in the prior art are mainly realized by "cut-off holes" or "guide holes" of the strata water inrush in underground construction, and the degree of risk of water damage to the roof of the stope from strata water inrush cannot be evaluated and analyzed qualitatively and quantifiably. Provided in the present invention is a method for evaluating the risk of water damage from strata water inrush of overlying strata in a mining area. The method comprises the following steps: S1, collecting geological data of each stratum in a mining area; S2, calculating the height of a water-conducting fracture zone in the mining area; S3, based on the principle of a composite beam, determining the position of strata water inrush development in the stratum above the water-conducting fracture zone; and S4, calculating a water inrush coefficient of the strata water inrush, and performing risk division of water damage from strata water inrush of overlying strata in the mining area. The present invention may predict and evaluate the risk of water damage from strata water inrush of overlying strata in the mining area in advance, and can provide a scientific basis for the formulation of a prevention and control scheme for water damage from strata water inrush, thereby ensuring the safe mining of a coal mine.