geometry
The HFR Model’s design allows the
tunnel to be significantly reduced in
length, up to 40%.
Basically, a 100 m deep HFR tunnel
can be shortened to approximately
40
m.
Static dimensional layout
L = maximum usable length 22,000 mm
HSC = maximum usable height below the tie
beam 6,500 mm
P = depth according to request
S = sliding direction
C = compression percentage up to 40%
of total depth
%
= the standard roof slope is 15%