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

Table 5

Quality ranks of tunnel buried depth and quantitative scores.

Name	Quantitative data and description
Depth (m)	0<𝐷<100	100≤𝐷<300	300≤𝐷<500	500≤𝐷≤700	𝐷>700
Quality ranks	Shallow	Relatively shallow	Medium	Relatively deep	Deep
Scores	2	4	6	8	10