This study studied the most important problems that may be exposed to Al-Askarian underpass in province of Najaf. The length tunnel is 507 m. It divided into two parts according number test pits, and each part 17 depending on locations joints tunnel. During construction process, problem height-water level appeared at site, so four wells were drilled control groundwater level. highest was record...

Previous studies have analyzed the damage of tunnels and slopes as a single entity, ignoring interaction effect between slopes, which will an impact on accuracy mechanism safety treatment measures. In this paper, three types simulation models are established—the natural state, after tunnel excavation, reinforcement measures—considering case study underpass landslide in southwest China. Based th...