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

Table 11

Quality ranks of construction quality and quantitative scores.

Name	Quantitative data and description
Construction quality coefficient (𝑄/%)	<10	10≤𝑄<20	20≤𝑄<30	30≤𝑄≤50	>50
Affecting ranks	Small	Relatively small	Medium	Relatively large	Large
Scores	2	4	6	8	10