摘要
在建立老顶断裂前后的力学模型的基础上,该文选用WinLkler弹性地基假定公式,并借助Timoshenko的解通过理论推导分析对老顶结构的稳定性进行了研究,确定了断裂前老顶所形成的最大弯矩所在位置为空巷负帮内,说明自由空巷条件下,老顶不可能在空巷上方断裂。
On the basement that mechanics model establishment of the old roof fracture before and after, This article uses WinLkler elastic foundation assumed formula and the solution of Timoshenko to carry out the old roof structure stability formula derivation and theoretical analysis, to indentify the location of the greatest moments before the old roof＇s breaking down. Under the liberal abandoned roadway conditions, The old roof can not be broken above the abandoned roadway.
出处
《山东煤炭科技》
2010年第3期128-129,共2页
Shandong Coal Science and Technology
关键词
空巷
老顶稳定性
WinLkler弹性地基假定
曲变形微分方程
Abandonde roadway Old roof stability WinLkler elastic foundation assume Curved differential deformation equation
