中文摘要：

基于大采高综放工作面煤壁上方顶煤破坏特征和运移趋势,将煤壁简化为下部刚性固支、上端自由受压的等直细长压杆,通过压杆模型尖点突变标准势能函数的理论推演,得出大采高综放工作面煤壁片帮力学条件判据,明晰煤壁片帮控制关键技术措施。

英文摘要：

Based on the failure feature and movement tendency of the coal on the top of the rib in top-coal mining face,the rib can be simplified as a compression strut which is rigid clamped at the bottom of the rib and free clamped on the top of the rib.The condition criterion was obtained in top coal caving face with large mining height by theoretical derivation of the standard potential energy function,and key technical measures was pointed out at the same time.