Zhōngguó
Pусский
English
Français
Español
About Tunnelling
Why
go underground
How
to go underground
Use
of underground spaces
Case
Histories
Main glossary
Heading / Heading face
Search for glossary terms (regular expression allowed)
Begin with
Contains
Exact term
Sounds like
All
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Term
Definition
Heading / Heading face
The wall of unexcavated ground at the
advance
end of a
tunnel
. Similar in use to
face
