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.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1994年第4期352-359,共8页
Journal of China Coal Society
关键词
顶板管理
矿山压力
再断裂
切顶力
complex strong roof, separation body, super-long cantilever beam,roof re-breaking, cutting off resistance
