通过数值分析软件FLAC3D对锚杆垂直壁面布置和锚杆斜交布置2种方式在无原岩应力条件下进行模拟,得出锚杆垂直布置在巷道顶板围岩附近产生较大范围的压应力拱,有利于顶板支护,锚杆斜交布置对两帮支护作用优于锚杆垂直壁面布置;对巷道围岩稳定性分析得出,对于顶板支护锚杆垂直布置要优于锚杆斜交布置。 Through numerical simulation software FLAC3D, the vertical wall layout of anchor bolt and the diagonal arrangement of anchor bolt were simulated under the condition of no original rock stress. It was concluded that vertical arrangement of anchor bolt produced a large range of compressive stress arch near the roof rock of tunnel roadway , Which is propitious to the support of the roof. The diagonal arrangement of the anchor rod is better than that of the vertical wall of the anchor bolt. The stability analysis of the surrounding rock of the roadway shows that for the roof support bolt, the vertical arrangement is better than the anchor bolt Arrange the layout.