Vulnerability Analysis of Soft Caving Tunnel Support System and Surrounding Rock Optimal Control Technology Research

Table 6

Quality ranks of geological structure influence and quantitative scores.

Name	Quantitative data and description
Effect factors and extent	Single factor (small)	Double factors (small), single factor (medium)	Double factors (one medium and one small), three (one medium and two small)	Single factor (large), double factors (two medium), three factors (two medium and one small)	Others
Quality ranks	I	II	III	IV	V
Scores	2	4	6	8	10