1. For hard but not severely weathered rock slopes, in order to prevent further weathering and spalling, using shotcrete to form a protective layer on the slope.
2. It can be used on high and steep slopeses, especially for the slopes where the upper rock layer is broken down and the lower rock layers are complete, and the slopes that need large-area protection and more concentrated slopes are more economical to spray or spray concrete.
3. It is inappropriate to use clay rock slopes with poor diagenesis.
4. It is applicable to slopes where groundwater does not develop relatively dry.
