摘要
借助结构稳定理论，分析了工作面顶板“三铰拱”结构、“砌体梁”结构的变形失稳机理，建立了顶板变形失稳的几何、载荷参数条件，提出了确定合理支架刚度的标准及计算公式。同时指出，顶板岩层流变会降低顶板结构承载能力，促使变形失稳发生。
The mechanism of deformation of 'three articulation arch' structure and 'masonry Beam' and instability of roof in a coal face is studied by theory of structure stability. The geometric and load parameters for establishing a model for studying deformation and instability of roof are defined. A rational criterion and equation for calculating support stiffness are proposed. It is also pointed out that rheology of roof rock will reduce the carrying capacity of roof structure and will induce deformation instability.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1995年第6期601-606,共6页
Journal of China Coal Society
关键词
顶板结构
支架刚度
岩梁结构
稳定性
矿井
roof structure, deformation instability, stiffness of support
