Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Squeezing grounds and their effects on TBM performance
Squeezing grounds and their effects on TBM performance are the main subjects of this chapter. Four types of squeezing were encountered in tunnels excavated by TBMs in Turkey. The first occurred in weak zones such as graphitic schist with high overburden. A typical example to this is Uluabat energy tunnel, where the TBM stuck 18 times during the excavation and also the Kosekoy–Bilecik high speed railway tunnel. The second different type of squeezing was due to weak contact zones between the main rock and dykes, as occurred in the Beykoz sewerage tunnel. Squeezing of the TBM in the Suruc water tunnel occurred due to clayey zones coming in contact with water. However, in some cases like the Kargi energy tunnel, squeezing of the TBM was the result of either collapsing in blocky ground or squeezing clayey zones. Each case is explained in detail with remedial measures to keep TBM stoppages to a minimum. Due to a careful site observation, analyzing the TBM data and remediation program, it is observed that daily advance rates of TBM may increase considerably.
Squeezing grounds and their effects on TBM performance
Squeezing grounds and their effects on TBM performance are the main subjects of this chapter. Four types of squeezing were encountered in tunnels excavated by TBMs in Turkey. The first occurred in weak zones such as graphitic schist with high overburden. A typical example to this is Uluabat energy tunnel, where the TBM stuck 18 times during the excavation and also the Kosekoy–Bilecik high speed railway tunnel. The second different type of squeezing was due to weak contact zones between the main rock and dykes, as occurred in the Beykoz sewerage tunnel. Squeezing of the TBM in the Suruc water tunnel occurred due to clayey zones coming in contact with water. However, in some cases like the Kargi energy tunnel, squeezing of the TBM was the result of either collapsing in blocky ground or squeezing clayey zones. Each case is explained in detail with remedial measures to keep TBM stoppages to a minimum. Due to a careful site observation, analyzing the TBM data and remediation program, it is observed that daily advance rates of TBM may increase considerably.
Squeezing grounds and their effects on TBM performance
Bilgin, Nuh (Autor:in) / Copur, Hanifi (Autor:in) / Balci, Cemal (Autor:in)
28.10.2016
21 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Prediction of tunnel deformation in squeezing grounds
| British Library Online Contents | 2013
Prediction of tunnel deformation in squeezing grounds
| Online Contents | 2013
Estimation of support pressure during tunnelling through squeezing grounds
| British Library Online Contents | 2014