Taking the flooding accident of coal floor limestone water bursting in the III628 Fully Mechanized Working Face, Zhuzhuang Coalmine, Huaibei as an example, analyzed No.6 coal seam water hosting hydrogeological condition, established No.6 coal floor "four-zone" (I.e. Rock pressure caused broken zone, newly damaged zone, primary damaged zone and primary water conducted height zone) model and carried out numerical analysis. The study considered that: the main causation of water bursting is from working face minor faults formed primary damaged zone turned into water conducted zone under mining dynamic pressure, consequently the water bursting to be caused. Through the case study analysis, the "four-zone theory" can interpret this water bursting mechanism better, and initiatively considered that the four zones have existed in No.6 coal floor in the Huaibei mining area. The "four-zone theory" has guiding significance in floor limestone water control in similar coalmines.%以淮北朱庄矿Ⅲ628综采工作面底板灰岩水突水淹面事故为案例,分析了6煤赋存水文地质条件,建立了6煤底板“四带”划分模型并进行数值分析.研究认为,造成突水的主要原因是由工作面内小断层形成的原始损伤带在采动动压作用下演变成导水通道,从而造成突水事故.通过本案例的分析,“四带理论”较好地解释了本次突水机理,初步认为在淮北矿区6煤底板存在“四带”,“四带理论”对类似矿井底板灰岩水防治具有重要指导意义.
展开▼
