Hole Angle should not exceed 15 degrees any where in the hole unless down hole geological conditions induce such deviation, such as acute fault intersections.
井斜角在井眼任何地方不应超过15度，除非井下地质条件引发了此种偏离，如严重的断层交叉。
2
Bolt Hole Spacing should be consistent with the allowable deviation of norms.
螺栓孔孔距的允许偏差应符合规范的规定。
3
A system formed by both the tolerance zone of the shaft with definite basic deviation, and that of the hole with different basic deviations.