An example is a bolt hole circle, in which the diameter of the bolt circle, the spacing of thebolt holes, and other parameters must be specified.
例如螺栓孔圆形，螺栓圈的直径，其中必须指定螺栓孔和其他参数的间距。
2
Discrete element method is used to analyze the roof stability in accordance with the variation of its loading, rock frictional Angle, boltspacing, rock properties and bolt orientation.
采用离散单元法，分析了当荷载、岩体的摩擦角、锚杆间距、锚杆方向和岩体的性质变化时，顶板的稳定性。
3
Bolt Hole Spacing should be consistent with the allowable deviation of norms.