论文部分内容阅读
将煤层底板至含水层之间承载能力最大的一层岩层看作底板关键层，从而将采场底板突水的研究转化为对底板关键层破断机制的研究，将关键层看作受水压等均布载荷作用的弹性薄板，得出了它的极限破断跨距公式，并提出了利用已知突水事故资料反演预测岩体强度的方法，提高了理论计算精度。最后，分析了底板关键层破断后的块体平衡条件，解释了突水点的分布特点与突水时产生的底鼓现象。
Considering the rock bearing layer with the highest carrying capacity between the coal floor and the aquifer as the key floor, the study of water inrush from the stope floor translates into the study of the fracture mechanism of the key floor of the floor. The key layer is regarded as affected by water pressure The elastic thin plate with uniform load effect obtains its ultimate breaking span formula and puts forward a method to predict the strength of rock mass by using the data of known water inrush accident so as to improve the theoretical calculation precision. Finally, the condition of block equilibrium after the key floor is broken is analyzed, and the distribution characteristics of water inrush point and the kick drum phenomenon caused by water inrush are explained.