Uncertainties in the Slope Stability Analysis: Case Study: Portal of Sabzkuh Tunnel, Iran

It is widely recognized that slope stability analysis is characterized by numerous uncertainties due to limited sampling, discrepancy between different methods of laboratory and in situ strength testing, and uncertainties in soil models. Basic Insufficient Geological and geotechnical studies will be caused the inaccurate parameters for trench stability analysis. Therefore, as the first step, in the trench design, the special considerations for investigations and primary studies are very important. In the Portal of Sabzkuh Water Conveyance Tunnel design, despite the adequate geotechnical investigations, field studies have not been performed with appropriate accuracy, consequently a landslide and collapse is occurred in a part of the portal because of tunnel excavation. In this paper, the importance of having a precise and predetermined schedule for selecting site location, Complexities of the ground conditions and its effects on the stability of the trench has been investigated.

کلیدواژه ها:

Ground complexity ، Collapse ، Uncertainty ، Mistake planning ، Monitoring ، Sabzkuh tunnel