Evaluation of composite water disaster and comprehensive water prevention and control countermeasures in No.24901 working face of Zhangshuanglou Coal Mine
Mine water inrush is one of the most threatening disasters in the process of coal mine production,and it is necessary to com-prehensively evaluate and control the threat of water disaster before mining in the working face.Taking the No.24901 working face of Zhangshuanglou Coal Mine as an example,in view of the hydrogeological problems faced by the study area,such as the high bearing ca-pacity of the four-ash floor in the west wing mining area,the structural development of faults and collapse columns,and the great differ-ence between the four-ash floor and the water-rich floor,it was planned to reveal the development and water-rich law of the four-ash floor karst in the study area through staged underground drainage test,on-site drilling and exploration of old empty water,comprehensive ex-ploration of geophysical exploration of collapse columns,indoor analysis and test and theoretical analysis.The location,amount,develop-ment range and water conductivity of the old empty water were found out,and the comprehensive prevention and control technology sys-tem of the old empty water,the four ashes in the west wing floor,the collapsed column and fault structure was finally put forward.The relevant research results reveal the characteristics of water disasters such as limestone water and tectonic water in coal seam floor com-monly faced by eastern mining areas,which can provide certain theoretical and engineering basis for mine water prevention and control in the research area and similar mining conditions.
Zhangshuanglou Coal Mineprevention and control of waterhydrogeological issuesprevention and control technology
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