Dynamic Risk Assessment of Karst Tunnel Collapse Based on Fuzzy-AHP: A Case Study of the LianHuaShan Tunnel, China

Table 13

Probability of tunnel collapse (several sections).

Sections	Fuzzy estimation results					Probability	Tunnel collapse
ZK1 + 358	0.135	0.201	0.204	0.223	0.238	Likely to happen	There is a large collapse in the vault, forming a collapse cavity
ZK3 + 070	0.141	0.205	0.213	0.235	0.207	Could happen	The soil at the arch of the tunnel face collapsed
YK3 + 074	0.159	0.210	0.203	0.223	0.205	Could happen	The soil mass on the upper right side of the arch of the tunnel face collapsed