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A new approach to evaluate the effect of over-boring and standstill time on thrust force of shielded TBMs based on penetration rate under squeezing conditions
One of the most substantial issues faced during the excavation of deep tunnels in weak geomechanical conditions is the squeezing phenomenon. Thrust...
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Investigating the relationships between rock mass classification systems based on data from mechanized tunneling projects in Iran
Rock mass classification systems are valuable tools for estimating design parameters of rock engineering projects. In some cases, due to the lack of...
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Introduction of a modified QTBM model for predicting TBM penetration rate in rock, based on data from mechanized tunneling projects in Iran
One of the TBM performance prediction models that has been introduced in recent years and used for estimating penetration rate of TBM in hard rock...
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Measurement and Analysis of Shield Tunneling Settlement of Adjacent Different Foundation Buildings
China's coastal areas are economically developed and densely populated, where subway construction is concentrated, and where deep soft clay is widely...
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Estimation of ground pressures on a shielded TBM in tunneling through squeezing ground and its possibility of jamming
Single- and double-shield tunnel boring machines are being increasingly considered for use in rock tunneling projects. However, one of the main...
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Performance Predictions of Hard Rock TBM in Subcritical Cutter Load Conditions
In mechanized tunneling, the ability to accurately predict the performance of the tunnel boring machine (TBM) is critical, because of its impacts on...
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On the Effect of Shield Friction in Hard Rock TBM Excavation
During hard rock tunnel boring machine (TBM) excavation, shields behind the cutterhead are usually in direct contact with the tunnel wall and...
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Early cost estimation models based on multiple regression analysis for road and railway tunnel projects
Estimates of a tunnel construction cost are among the most critical tasks during the planning stage of both road and railway projects to justify the...
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Introducing an empirical model for prediction of disc cutter life for TBM application in jointed rocks: case study, Kerman water conveyance tunnel
Disc cutters wear and need to be replaced when using tunnel boring machines (TBMs) to excavate through rock, often becoming a high ticket item on the...
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Analysing the Feasibility of a Full-face Cutting Machine for the Robominers Project
Several methods of excavation have previously been studied to choose the most suitable approach to be applied in the Robominers project. Compared to...
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TBM Principle and Structure
This chapter focuses on the structural characteristics, basic configuration and working principle of the gripper TBM, the single-shield TBM and the...
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Decoding rate of penetration of tunnel boring machine in Deccan Traps under varied geological and machine variables using response surface analysis
Performance of TBM is significantly influenced by the ground conditions and machine variables. To achieve an optimum rate of penetration ( ROP ) during...
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Introduction
This chapter focuses on the concept and classification of tunnel boring machine (TBM), its origin, development, and application in the world,...
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TBM Cutter Head and Cutter Design
This chapter focuses on TBM rock breaking mechanism, TBM load calculation method, arrangement law of disc cutter, and cutter head structure and...
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TBM Construction in Special Stratum
Key points of this chapter: The tunnel construction technology with NATM as the core has gradually matured. TBM has been rapidly developed in various...
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Layout design specifications of hard-rock TBM cutterheads at maximum cutter penetration and TBM advance
Evaluation of optimum rock cutting performance is very important, especially at the phase of the design of a tunneling machine. In this regard,...
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Face Stability in Heavy Clay: Theory and Practice
AbstractThe authors focus on feasibility of reducing deformation of surrounding rock mass around underground structures by means of advanced...
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Grouting Material Development and Treatment of Water and Mud Inflow Caused by TBM Tunneling in Fault Zones
Water and mud inflow caused by TBM (Tunnel Boring Machine) tunneling in fault zones is a serious and troublesome geological obstacle in underground...
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Temperature monitoring and sensitivity analysis of tunnel in swelling paleosol layer of the Chinese Loess Plateau
The high-temperature swelling and subfreezing frost heave of the tunnel surrounding soil are indispensable parts in analyzing the tunnel stability in...
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Assessment of surface settlement induced by tunnel excavations for the Esenler–Başakşehir (Istanbul, Turkey) Subway Line
In most modern cities, public transportation demands are being addressed by constructing subways. The construction of tunnels, especially in weak and...
