Prediction of ground settlement induced by mechanized excavation in the Tehran Metro tunnel

Subject Areas :

Saeed. hosseini ¹ , Korosh. shahriar ² , Masoud. monjezi ³ , MohammadReza. Bitarafan ⁴

1 - کارشناس ارشد استخراج معدن دانشگاه آزاد اسلامی واحد تهران جنوب
2 - استاد دانشکده مهندسی معدن،متالوژی و نفت دانشگاه صنعتی امیرکبیر
3 - دانشیار دانشکده معدن دانشگاه تربیت مدرس
4 - کارشناس ارشد معدن شرکت مهندسی سپاسد

Received: 2016-09-05 Accepted : 2016-09-05 Published : 2013-09-23

Keywords: ABAQUS, Shallow tunnels, ground settlements, 3D modeling, empirical method, analytical metho,

Abstract :

The main issue of tunnelling in urban environment is the prediction of the ground settlements induced by tunnelexcavation, which may cause damage to surface structures. In this paper are used empirical, analytical and threedimensional finite element methods (by ABAQUS program) for the prediction of ground settlements inducedduring tunnel construction using EPB (earth pressure balance) excavation machine in part of the line 3 of Tehransubway. The results indicate that the three-dimensional FEM predicts a more realistic surface settlement value,and settlement profiles from empirical and analytical methods are narrower than numerical one. Moreover, themaximum predicted settlement by three methods is more than its suggested allowable value.