Information concerning the size and shape of tunnel boring machine (TBM) debris is essential for designing efficient loading, hauling and dumping systems for TBM excavation. It is also very important in deciding how to recycle the TBM debris. However, only very limited information is available at present, and theoretical or calculation methods to estimate the size and shape are still open to di...

With widespread increasing applications of mechanized tunneling in almost all ground conditions, prediction of tunnel boring machine (TBM) performance is required for time planning, cost control and choice of excavation method in order to make tunneling economical. Penetration rate is a principal measure of full-face TBM performance and is used to evaluate the feasibility of the machine and pre...

The fast development of wireless sensor networks and MEMS make it possible to set up today real-time wireless geotechnical monitoring. To handle interferences and noises from the output data, Kalman filter can be selected as a method to achieve a more realistic estimate of the observations. In this paper, a one-day wireless measurement using accelerometers and inclinometers was deployed on top ...

Timely and reasonable matching of the control parameters geological conditions rock mass in tunnel excavation is crucial for hard boring machines (TBMs). Therefore, this paper proposes an intelligent decision method main TBM based on multi-objective optimization efficiency cost. The objectives are to obtain most important machine, determine objective, establish objective function. In study, muc...

The study takes into account different classes of tunnel boring machines (TBM), with the aim identifying correlation models which are meant to estimate, at a preliminary design phase, construction time and evaluate mechanical operational parameters TBMs, starting from knowledge length excavation diameter. To achieve this goal, first all database was created, thanks collection most meaningful te...

numerical analysis of longitudinal and transverse surface settlement induced by epb tunneling- a case study: shiraz subway tunnels reza rahmannejad; mahdi esfandiary; eshagh namazi; hamed jamshidi             determination of the racking reduction factor for an incomplete ellipse shaped tunnel considering the soil-structure interaction mohammad reza momenzadeh; mohammad reza mansoori; armin azi...