摘要
介绍了综放采场顶板结构形式及其运动的控制因素,利用结构稳定理论和强度理论,分析了义马巨厚砾岩下孤岛综放工作面顶板结构的稳定性,建立了初次来压和周期来压期间顶板结构的动态稳定性判据.通过调整顶煤放出率,实现控制顶板的稳定性,从而实现安全开采.
Introduced the roof structures and their movement characteristics in fully-mechanized sublevel caving face. Utilized the structure stability theory and the strength theory, the stability in isolated fully-mechanized sublevel caving face under weighty conglomerate rock inYima were analyzed, and the judginent rules of roof stability with the top coal's recovery ratio were established. The theoretical bases of designing the safe top coal's recovery ratio were provided according to different roof, and the safe roof controlling was achieved at coal mine.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2005年第B08期1-4,共4页
Journal of China Coal Society
基金
国家自然科学基金重大国际合作项目(50320120001)
国家自然科学基金资助项目(50074021)
关键词
巨厚砾岩
综放采场
顶板稳定性
weighty conglomerate rock
fuUy-mechanized sublevel caving face
roof stability