摘要
针对长壁工作面顶板垮落具有局部、分段、迁移的时空特征, 将长壁工作面采场顶板划分成若干个相互铰接的薄板, 建立了薄板组力学模型. 利用弹性力学薄板理论和数值方法分析了几种支承条件下薄板的应力和挠度分布, 并研究其垮落条件. 从理论上解释了沿工作面方向顶板垮落及其来压特征, 在工程上得到了很好的验证.
Based on the local, migratory and subsection characteristics of main roof fall of longwall face, the main roof was divided into some plate group, and plate group mechanical model was established. The stress distribution of plate under some bearing conditions was obtained by using elastic plate theory and numerical simulation. It interpreted the characteristic of main roof fall along the longwall face, which is well agreeable with the main roof fall of Silaogou Coal Mine.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2005年第2期172-176,共5页
Journal of China Coal Society
基金
国家重点基础研究发展规划项目 (2002CB412707)
国家自然科学基金资助项目 (10372111)
