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Selection of a suitable TBM for soft ground tunnelling
Author(s) -
Edelhoff Dennis,
Humme Eva
Publication year - 2018
Publication title -
geomechanics and tunnelling
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.317
H-Index - 18
eISSN - 1865-7389
pISSN - 1865-7362
DOI - 10.1002/geot.201800030
Subject(s) - quantum tunnelling , overburden , tunnel boring machine , process (computing) , mining engineering , civil engineering , computer science , geotechnical engineering , ground pressure , engineering , geology , construction engineering , mechanical engineering , materials science , optoelectronics , operating system
For tunnelling in loose rock, where active and continuous support of the face is required, the application areas of mix/hydro and EPB shield machines are increasingly overlapping to such a degree that the use of both types of machine is possible both in the fine‐grain range and in coarse‐grained loose rock. Since the prevailing soil conditions are rarely homogeneous, but rather characterised by alternating sequence, the planning process is of decisive importance. However, it is not possible to select machines solely based on soil conditions or geotechnical parameters. The supplementary assessment areas include the machine‐ and process‐engineering, system‐immanent special features, e.g. management of bricks/blocks, transfer of supporting pressure and maintenance, interaction of TVM building ground regarding wear and sticking, utilization of the overburden as well as evaluation of the spoil quality. This article describes the main aspects of the decision‐making process for suitable machine and tunnelling technology and summarizes the advantages and disadvantages.