Parametric study of some factors influencing tunneling

الملخص EN

The aim of this paper is directed towards the study of some factors influencing tunneling.

The effect of variation of tunnel radius, rigidity, depth below ground surface, gap parameter represented by tunnel contraction and soil rigidity on both ground subsidence and on stresses induced in the tunnel are studied.

Also the effect of tunnel construction at a depth below a present shallow strip footing is studied.

A plain strain finite element program is used to handle the problem.

Nonlinear finite element analysis is carried out to define the pattern of ground subsidence around different tunnel conditions taking into consideration the construction sequence and interface between the ground and tunnel lining.