锚杆支护对层状岩层巷道作用的二维有限元分析

Two-dimension finite element analysis of the function of bolts supporting on layered rock tunnel

摘要: 应用 ANSYS 有限元软件,在巷道高度不变、改变巷道跨度的情况下,对层状结构岩层巷道开挖施工进行了弹塑性二维的模拟分析,分析了其应力、变形以及破坏规律,讨论了不同埋深巷道围岩变形情况,得出了顶板、底板及煤帮的应力、变形及破坏规律。

Abstract: By use of ANSYS FEM software,under the circumstances of fixed tunnel height and changing span, a elastoplast ic two-dimension simulation analysis is conducted to the layered structure tunnel excavation, includ ing its stress, deformation and damage law.A different-depth tunnel rock deformation is discuss ed. The stress, deformation and damage laws of roof, floor and coal are acquired.