预应力桁架锚索支护模拟分析与应用  

Numerical simulation and application of prestress truss cable

作　　者：郝身展 姚精明[1,2] 

机构地区：[1]重庆大学资源及环境科学学院,重庆400044 [2]重庆大学煤矿灾害动力学与控制国家重点实验室,重庆400044

出　　处：《山西建筑》2016年第3期60-61,共2页Shanxi Architecture

摘　　要：为有效控制煤矿巷道围岩变形,提出了预应力桁架锚索支护方案,利用有限差分软件FLAC进行了数值模拟,优化了桁架锚索角度、长度及锚索孔口与煤帮距离,并将研究结果应用于现场实践中,顶板下沉量被控制在120 mm以内,表明桁架锚索能有效抑制巷道围岩的变形破坏。Prestress truss cables are raised to control the deformation of the surrounding rock effectively. Angle,length and distance between orifice and coal side of truss cable are optimized by FLAC. Research results were used in filed practice,roof convergence was controlled within120 mm. Practice shows that prestress truss cable can inhibit the deformation and failure of surrounding rock masses.

关 键 词：巷道 桁架锚索 预应力 破碎顶板 数值模拟 

分 类 号：TD353[矿业工程—矿井建设]