Research on the"three zones"of goaf roof can provide important technical support and basis for coal mine safety mining design and disaster risk prevention and control.Based on work practice and the necessity of conducting study on the"Three Zones",this paperexplores the main content and related technical methods of the"Three Zones"research,analyzes the important role of the"Three Zones"research in coal mine safety production,and believes that the role of the"Three Zones"study is to provide basic technical parameters for selection of the high-gas key stratum for extraction,determination of the dia-phragm coal(rock)pillar for preventing water hazard,and roof control and geologic forecast.Some improvement suggestions on the"Three Belts"research are proposed,providing some reference for deepening the"Three Belts"research work.
关键词
采空区覆岩/顶板"三带"/顶板控制/瓦斯抽采/水害防控
Key words
goaf overlying rock/roof"three zones"/roof control/gas extraction/water hazard prevention and control
万方数据