پيش بيني ميزان نفوذ آب به داخل تونل با استفاده از مدل سازي عددي اجزاي محدود

PREDICTION OF GROUNDWATER INFLOW INTO TUNNEL USING NUMERICAL MODEL; A PRACTICAL CASE STUDY: KUHIN RAILWAY TUNNEL, QAZVIN- RASHT, IRAN

Water inflow into underground spaces is one of the serious challenges in safety management which could lead to undesirable effects on excavation process. Therefore, determination of the groundwater inflow into tunnel is necessary to design dewatering systems and predict safety arrangements. In this paper, the groundwater inflow into Kuhin railway tunnel (with 100m overburden and 55m water table from project line) was modeled by SEEP/W software (based on the finite element method) for different excavation stages. The results showed that the water inflow into the Kuhin tunnel in full excavated state is equal 2.194e-4 m/s2ʹ