复合型坚硬顶板在初压期间的再断裂及其控制  

RE-FRACTURE OF COMPLEX STRONG ROOF AND ITS CONTROL IN INITIAL WEIGHTING PERIOD

作　　者：高存宝[1] 钱鸣高[1] 翟明华 吴兴荣 

机构地区：[1]中国矿业大学,徐州矿务局

出　　处：《煤炭学报》1994年第4期352-359,共8页Journal of China Coal Society

摘　　要：讨论了三河尖煤矿复合型坚硬顶板的剥离冒落特点、顶板剥离体在运动过程中的内力分布、顶板再断裂位置的控制等问题。据此，认为该类顶板控制的关键是把剥离体的再断裂控制于切顶线之外，这样可以大大减少工作面所受压力。给出了这种顶板条件下合理切顶力的确定方法。in this paper the characteristics of complex strong roof are discussed in roof separation and caving process in San Hejian Colliery. Distribution of internal forces in the movement of separation body and control of position of roof re-fracturing are analyzed. Based on this the authors drew a conclusion that the key to control of this kind of roof is to keep re-break position of the caving rock beam outside the cutting-off line so that roof pressure in the work face can be reduced enormously.A method for determining the cutting-off resistance is presented.

关 键 词：顶板管理 矿山压力 再断裂 切顶力 

分 类 号：TD327.2[矿业工程—矿井建设]