摘要
针对 、 类回采巷道中桁架锚杆的应用前景看好 ,但缺乏桁架锚杆支护参数的设计依据 ,本文采用有限元计算软件 2 D-σ,以东庞煤矿 2 1 0 6综放回采巷道的地质条件为工程背景 ,从围岩变形特征、应力分布特征及围岩应力状态出发 ,进行桁架锚杆支护系统中锚杆角度的优化 ,结果表明 ,锚杆角度为 60°时桁架锚杆支护效果较好。
Directing the situation that the prospect of truss bolt supporting is bright in the actual mining roadway, but the design foundation of the supporting parameter of truss bolt is lack, this paper make use of the element software of 2D σto make a numerical analysis of the bolt angle, on the background of the geological environment of 2106 actual mining roadway in Dongpang colliery, in term of the characteristics of deformation and the stress distribution. The result reveals that when the bolt angle is 60°, the support effect of the truss bolt is best.
出处
《矿山压力与顶板管理》
北大核心
2003年第1期20-21,24,共3页
Ground Pressure and Strata Control
基金
山东省自然科学基金项目资助 (Q99F0 7)
