Pre-tunneling exploration for rock mass classification is a common practice in tunneling projects. This study proposes data-driven approach that allows classification. Two machine learning (ML) models, namely random forest (RF) and extremely randomized tree (ERT), are employed to classify the conditions encountered Pahang-Selangor Raw Water Tunnel Malaysia using tunnel boring (TBM) operating pa...

key factor in the successful application of a tunnel boring machine (TBM) in tunneling is the ability to develop accurate penetration rate estimates for determining project schedule and costs. Thus establishing a relationship between rock properties and TBM penetration rate can be very helpful in estimation of this vital parameter. However, this parameter cannot be simply predicted since there ...

Intact rock properties together with rock mass characteristics should be well investigated for selection of proper tunnel boring machine (TBM) for tunneling in various ground conditions. This is due to the significant impact of rock mass characteristics on machine performance. TBMs are site specific and designed for optimal performance in given ground conditions. When selected and put to work a...

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...

Tunnel Boring Machines (TBMs) are used for tunneling and underground construction, by excavating material subsequently installing a segmental concrete tunnel liner support. However, unknown ground conditions pose significant risk to operations any damage the machine can be disastrous project. There is need tools which look ahead of TBM potential hazards during tunneling, such as water saturated...

Tunnel excavation is prone to segment cracks, which may lead serious safety accidents. This work aims investigate the type, location and occurrence time of cracks in a large-diameter underwater shield tunnel also ascertain causes cracks. The correlations between crack characteristics tunneling parameters were analyzed. effect jack deflection poor assembly on investigated using refined finite el...

The development and extension of large cities induced a need for shallow tunnel in soft ground of building areas. Estimation of ground settlement caused by the tunnel excavation is important engineering point. In this paper, prediction of surface subsidence caused by tunneling in one section of seventh line of Tehran subway is considered. On the basis of studied geotechnical conditions of the r...

Modern tunneling projects will often rely on a Tunnel Boring Machines (TBMs) rather than traditional drill and blast (D&B) methods, because of TBMs’ increased tunneling efficiency[1]. TBMs have a circular drill at the front, which can range in diameter from 1 meter to 19.25 meters, depending on the desired use for the completed tunnel. Applications of tunnels dug by TBMs range from underground ...