چکیده مقاله
Austrian Tunneling is mainly applicable for big section tunnels The tunnel is excavated step by step in this technique Furthermore, forepoling, jet grouting and freezing are the techniques applied to construct falling tunnels; however, Austrian tunneling should not be used alone in medium section tunnels such as water conveyance tunnel and falling tunnels As a result, the authors have introduced a new technique called Right Left technique In this technique, first forepoling, also known as tube umbrella, was used to strengthen tunnel Then, having divided tunnel into two left and right sections, the right section was excavated exactly the size of half a steel frame and shotcrete technique was immediately used The same technique was applied to the left section Then, the face was advanced by drum cutter up to the area excavated by steel frame The operation cycle was completed in this way Relative stability was obtained by using this technique In this paper, technical reasons for choosing this technique was presented Furthermore, using Flac 3D, its convergence was compared with that of the Austrian
کلیدواژهها
نویسندگان
Masoud Ghaemi
phD Candidate in Rock Mechanic, Engineer Sepasad Group, Coach of Shams University
Alireza Khalili
Student of Geotechnic, Shams Higher Education Institute, Gonbad e Kavus
Majid Matloobi
Engineer Sepasad Group
Ahmad Faramarzi
Engineer Sepasad Group
شیوه ارجاع
Ghaemi, Masoud and Khalili, Alireza and Matloobi, Majid and Faramarzi, Ahmad,1394,New Approach in Tunneling Construction Using the Forepooling Technique,The Second Regional Conference and the Eleventh Iran Tunnel Conference,Tehran
ارائهشده در
مجموعه مقالات دومین کنفرانس منطقه ای و یازدهمین کنفرانس تونل ایران11 آبان 1394 · تهران