Tóm tắt:

In last 20 years, there are more than 1000 Micro Tunnel Boring Machines (MTBM) has been used for tunnel constructions with small crosssection. There are a lot of projects used MTBM’s frequently do not reach their targeted production performance. Reasons can be technical failures, insufficient capacity dimensioning, organizational deficiencies, or sensitive supply chains, some technical problems is occurred in the process of construction. One year in order to fix the disturbances at project in Nhiêu Lộc-Thị Nghè canal is a typical example. The time to finsh the project is important information that investors as well as contractor need to make the decisions during construction process, Therefore, the MiSAS module combined with the empirical formula is used in the paper for predicting the construction time of tunnel with MTBM considering the effects of the disturbances. Moreover, two actual projects at the city of Recklinghausen, Germany, is used for the study case.