Study on the technical characteristics and index of thick coal seam high-intensity mining in coalmine

On the basis of analyzing the current situation and definition of high-intensity mining in coalmine,the main technical characteristics of high-intensity mining in thick coal seam were systematically studied from the aspects of ge- ological and mining condition,working face size,technical equipment,advance speed,high production and efficiency, ratio of depth to thickness,overburden strata and ground surface destruction. Based on the concept of green mining,the main technical indexes and evaluation system of high-intensity mining had been established from the aspects of geolog- ical and mining technology,and mining influence and failure. Meanwhile,the analytic hierarchy process ( AHP) was used to analyze the mining influence and failure index. The results demonstrate that geological and mining technical factor and mining influence and failure factor are important parts of high-intensity mining of thick coal seam. Moreo- ver,mining influence and failure factor is an important characteristic that cannot be ignored in high-intensity mining of thick coal seam. The research results provide a theoretical and technical basis for safe and efficient green production, mining damage and protection in coalmine.