چکیده مقاله
In recent decades, metro tunnels are increasingly being excavated in Tehran In these tunnel excavations, it is important to control surface settlements observed during and after tunneling excavation Some empirical relations exist between shield tunnel characteristics and surface deformations Also, 2 D and 3 D numerical analyses have been applied to such tunneling problems This paper reports the results of a study carried out to estimate the values of the surface settlements induced by tunneling with EPB of the new extension of Tehran metro line7 It is aimed at investigating the effect of face pressure on surface settlements during excavation by using empirical formulations and numerical modeling Due to the structural features and geology of the area, finite difference method was selected and FLAC3D software was used for numerical modeling The results obtained from the numerical and empirical analyses show that face pressure is very effective on controlling the surface settlement The results are presented in the paper and provisions for reducing the settlement are discussed
کلیدواژهها
نویسندگان
Alireza Talebinejad
Graduated, Tehran University, Dept of Mining Engineering, Tehran, Iran
Hamid Chakeri
Phd student, Hacettepe University, Dept of Mining Engineering, Beytepe, ۰۶۸۰۰ Ankara, Turkey
Mahdi Moosavi
Associate Professor, Tehran University, Dept of Mining Engineering, Tehran, Iran
Bahtiyar Ünver
Professor, Hacettepe University, Dept of Mining Engineering, Beytepe, ۰۶۸۰۰ Ankara, Turkey
شیوه ارجاع
Talebinejad, Alireza and Chakeri, Hamid and Moosavi, Mahdi and Ünver, Bahtiyar,1390,Numerical and empirical analysis of face pressure effect on surface subsidence at a tunnel excavated by EPB method,09th Iranian Tunneling Conference,Tehran
ارائهشده در
مجموعه مقالات نهمین همایش ملی تونل10 آبان 1390 · تهران