长壁工作面采场围岩铰接薄板组力学模型研究_陈忠辉.pdfVIP

30 2 Vo.l 30 No. 2 2005 4 JOURNAL OF CH INA COAL SOCIETY Apr. 2005 : 0253- 9993( 2005) 02- 0 72- 05 , 2 3 陈忠辉 , 谢和平 , 李全生 ( () , 00083; 2, 6 0065; 3, 000 ) : 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 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. : 长壁工作面; 采场顶板; 薄板群模型 : TD3 : A Study on p late group m echan icalm odel for m ain roof of longwall face , 2 3 CHEN Zhong-hu i, X IE He-p ing , LIQuan-sheng ( Institute of R ock M echanics and Fractal, Ch ina University of M ining and Technology (B eij ing ), B eij ing 00083, Ch ina; 2 ichuan University, Chengdu 6 0065, Ch ina; 3 Ch inaN ationalCoalGroup Corp oration, B eij ing 000 , Ch ina) Abs tract: Based on the local, m igratory and subsection characteristics ofmain roof fall of longw all face, themain roofw as d ivided into som e plate group, and plate group m echan icalmodelw as establishedThe stress d istribution of plate under some bearing cond itionsw as obtained by using elastic plate theory and num erical smi u lation It inter- preted the characteristic ofmain roof fall along the longw all face, wh ich isw ell agreeable w ith the main roof fall of Silaogou CoalM ine K ey w ord s: longwall face; main roof; plate group model , . , , . , . . , , . . , , , . , , . - - : 2004 08 02 : ( 2002CB4 2707); ( 0372 ) : ( 969- ), , , , . Tel: 0 0 - 6233 252, E - m ail: chen_zhong_hu@i sohucom 2 : 73 , , . , : , , , .