摘要
通过建立平舒矿直接顶关键块破断力学模型,推导出直接顶关键块回转失稳和滑落失稳的两种判别形式。并建立"悬臂梁"力学模型对直接顶关键块周期破断稳定性进行分析,得出直接顶关键层各个系数之间的关系,为防止直接顶关键块失稳提供了有力的理论支撑。
Through the establishment of Pingshu coal direct roof key block fracture mechanics model, deduced the immediate roof key block rotary instability and sliding instability of the two forms of discrimination. Established a ＂cantilever＂ fracture mechanics model in order to analyze immediate roof key block cycle stability, obtained the relationship between the different coefficient of immediate roof key stratum. For prevent direct roof key block instability provide strong theoretical support.
出处
《机械管理开发》
2017年第10期7-9,共3页
Mechanical Management and Development
关键词
直接顶
关键层
稳定性分析
悬臂梁
direct roof
key layer
stability analysis
cantilever
