Esmailzadeh, Akbar, Peyman Jafar Shirzad, and Sina Shaffiee Haghshenas. 2017. “Technical Analysis of Collapse in Tunnel Excavation and Suggestion of Preventing Appropriate Applicable Methods (Case Study: Sardasht Dam Second Diversion Tunnel)”. Civil Engineering Journal 3 (9):682-89. https://doi.org/10.21859/cej-03095.