Sharif University of Technology Sharif Journal of Civil Engineering 2676-4768 vol. 23 No. 39 2007 11 22 STABILITY ANALYSIS OF TUNNEL, PORTAL TRENCH AND UNSTABLE WEDGES OF THE TUNNEL IN THE SHENAGE 47+400 GHAZVIN -RASHT -ANZALI RAILROAD USING STEREONET AND COMPUTER SIMULATION STABILITY ANALYSIS OF TUNNEL, PORTAL TRENCH AND UNSTABLE WEDGES OF THE TUNNEL IN THE SHENAGE 47+400 GHAZVIN -RASHT -ANZALI RAILROAD USING STEREONET AND COMPUTER SIMULATION 31 39 226 FA H. Hassani Depa. of Mining, Metallurgy and Petroleum, Amir Kabir University of Technology Sh. Arshdnejad - Journal Article 2011 06 20 - - https://sjce.journals.sharif.edu/article_226_7ff09f2f9371566dc0186a9e866552d7.pdf