7340

6845

كارشناسي ارشد

مكانيك سنگ

اصفهان: دانشگاه صنعتي اصفهان، دانشكده معدن

1391

ده، 106ص.: مصور﴿رنگي﴾، جدول، نمودار

ص.ع. به فارسي و انگليسي

راحب باقرپور، عليرضا باغبانان

حميد هاشم الحسيني، عليرضا صالحي

11/9/91

محمدعلي روشن ضمير، سعيد مهدوي

1396/09/21

كتابنامه

معدن

مهندسي معدن

ID6845

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

107 Numerical analysis of inclined tunneling on the stability of main tunnels of Tehran shomal North highway Siamak Doostdari s doostdari@gmail com Date of Submission 2012 10 09 Department of Mining Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language FarsiSupervisor Raheb Bagherpour bagherpour@cc iut ac irSupervisor Alireza Baghbanan bagh110@cc iut ac irAbstractDevelopment of transportation in large cities and the need for rapid transit systems due to theshortage of urban space natural barriers require the construction of new tunnels According tohow construction of tunnel creating the new tunnels near the intersection with the previoustunnel would be necessary there for the stability analysis of new and previous tunnels is one ofthe most important topics that will be addressed during the construction of new tunnels it shouldbe done in the way that the previous tunnels maintain its efficiency Tehran Shomal North highway in the West of Tehran starts from Shahid Hemmat crossing andat own path crosses along the Alborz mountain tunnel with a length of approximately 6400 meters from km 47 800 to 54 200 Great Alborz twin tunnels is one of the largest structures that areconstructed in Tehran Shomal North highway These tunneles begin from Gachsar to theZangole bridge in Karaj Chalos Road Alborz Tunnel consists of two main tunnels there andback and an exploration tunnel between the two main tunnels Dimensions of width and heightof Alborz tunnel are 12 04 and 9 07 meters respectively The main tunnels of Alborz areconnected to exploration tunnels by the access tunnels The distance of these access tunnels areapproximately 600 m Dimensions of width and height of access tunnels are 5 2 and 5 33 meters respectively complex conditions such as stress and displacement variation due to excavation ofexploration tunnel the main tunnel in parallel with exploration tunnel and access tunnel betweenexploration tunnel and main tunnel creates The main purposes of this study is investigation ofthe effects of inclined access tunnels excavation on the main tunnels stability and proposition ofthe new maintenance system due to high stress concentration at the junction Also this studyshowed that the effect of inclined tunnels excavation is 1 5 times of inclined tunnels width fromthe center of junction Also these results indicate that direction of inclined tunnel excavation wasaffected on main tunnel lining and excavation of inclined tunnel from the main tunnel towardexploration tunnel causes axial forces and bending moments in the lining of the main tunnel toincrease Keywords Tehran shomal North highway inclined tunneling FLAC 3D access tunnels intersection

راحب باقرپور، عليرضا باغبانان

حميد هاشم الحسيني، عليرضا صالحي

محمدعلي روشن ضمير، سعيد مهدوي