Using the laboratorial Stacked-block modeling technique, this paper aims at investigating the conditions that arc liable to incur disequilibrium and instability of broken layers of overlying strata in longwall mining ares.

• 本文主要在实验室,用砌块模型的方法对采场上覆坚硬岩层已破断岩块的平衡及失稳条件进行了研究。