1. The structural characteristics of the anchoring object are loose or soft soil structure. Such as soil slope, collapse pile in the way of the body, broken rock slope. It has the characteristics of low strength index, poor integrity, and easy to produce large deformation after applying anchoring force. It's rocky. Such as rock slope, underground cavern rock anchoring. It has the characteristics of relatively high strength index, relatively good integrity, and relatively small deformation after the application of anchoring force.