Civil Engineering Reference
In-Depth Information
21.4
Stability and Permeability Changes of the Rock Mass in the Machine
Area, Example
For a tunnel heading using a shielded TBM the stability of the rock mass in the machine
area is of particular importance. As an example, a machine-driven tunnel located in
unleached Gypsum Keuper is investigated. The characteristic parameters of this forma-
tion are listed in Table 8.1 (see also Section 18.2).
Figure 21.36
TBM tunneling in unleached Gypsum Keuper, stability of the unsupported
machine area,
FE-mesh
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