Zhōngguó
Pусский
English
Français
Español
About Tunnelling
Why
go underground
How
to go underground
Use
of underground spaces
Case
Histories
Main glossary
Locking Fill
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
Locking Fill
Backfill
, usually granular, placed carefully around the lower part of a
tunnel
to hold it in position.
