Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
On the face support of microtunnelling TBMs
Face stability of microtunnelling TBMs is an important aspect for a safe and controlled project execution. Lack of proper face support can lead to sudden collapse with resulting large settlements. Guidelines for minimal and maximal support pressures in most codes do not take the infiltration of bentonite suspension in coarser soils into account. Infiltration lowers the effectiveness of the face support. In loose sands infiltration can lead to excess pore pressures and induce liquefaction, with possible catastrophic consequences. This paper investigates the influence of infiltration and gives some guidelines for a proper selection of bentonite suspensions based on soil gradation.
On the face support of microtunnelling TBMs
Face stability of microtunnelling TBMs is an important aspect for a safe and controlled project execution. Lack of proper face support can lead to sudden collapse with resulting large settlements. Guidelines for minimal and maximal support pressures in most codes do not take the infiltration of bentonite suspension in coarser soils into account. Infiltration lowers the effectiveness of the face support. In loose sands infiltration can lead to excess pore pressures and induce liquefaction, with possible catastrophic consequences. This paper investigates the influence of infiltration and gives some guidelines for a proper selection of bentonite suspensions based on soil gradation.
On the face support of microtunnelling TBMs
Broere, Wout (Autor:in)
Tunnelling and Underground Space Technology ; 46 ; 12-17
2015
6 Seiten, 39 Quellen
Aufsatz (Zeitschrift)
Englisch
On the face support of microtunnelling TBMs
| Online Contents | 2015
FACHTECHNIK - Microtunnelling - Maschinentechnik des Microtunnelling
Online Contents | 2001
Online Contents | 1998
| Springer Verlag | 1993