Tunnel boring machines (TBMs) are considered to be the most efficient tunneling method for
long tunnels because of their higher productivity, adaptability to a variety of subsurface …

The fundamental components in predicting the TBM performance (advance rate) are the rate
of penetration and utilization. Extensive studies have been conducted to accurately estimate …

Underground construction has become a necessity considering social, technological,
economical, and sustainable advancements in society. Tunnel boring machines (TBMs) can …

The underground construction demand is rising driven by social, technological, economical,
and sustainable issues and opportunities. A tunnel boring machine (TBMs) can be …

While the tunnel boring machines (TBMs) have been broadly accepted by tunneling
industry, the calculation of TBM advance rates has always been a challenge in setting …

Estimating utilization rate is a critical factor for predicting performance of tunnel boring
machines (TBM). The process of estimating machine performance, including rate of …

5 miles of soft ground tunnel excavation for the SAWS W‑6 project finished months early
despite difficult conditions. Success was achieved using TBMs and other equipment built …

Tunnel boring machines (TBMs) can be considered as the method of choice for tunneling in
many projects due to the high level of efficiency and high potential productivity, safety, and …

Estimating of TBM utilization factor (U) is one of the challenges in mechanized tunneling.
Utilization factor is determined by combined effect of tunnel geology, machine specification …