Risk Assessment of Water Inrush in Tunnels: A Case Study of a Tunnel in Guangdong Province, China

Fractured tectonic zones with developed groundwater are one of the major causes water inrush in construction igneous tunnels; thus, it is highly important to assess risk inrush. In this study, a total six evaluation attributes, level, amount water, permeability coefficient, strength surrounding rock, rock integrity, and width jointed fault fracture zone, were selected for assessment inrush, fuzzy theory was applied treatment uncertainty attributes. On basis, MULTIMOORA (multiple multi-objective optimization by ration analysis) model nearness degree incidence combined obtain new MULTIMOORA–nearness A deep-underground, extra-long tunnel under southern China used as an example validation. The sections assessed on site ZK91 + 195~236, K91 169~186.5, 203~238, ZK94 238~198, K94 112~82, 076~034. 112~82 at Level III, while remainder IV. conditions also III section IV remainder. results above consistent field conditions, which verified validity incidence.