Patent AU-2019283806-B2 (AU)
Title: Construction element for creating a tunnel, tunnel comprising such an element and methods for constructing such an element and such a tunnel
Inventor: SIMON JEAN
IPC: E21D11/05
Filed: 2019-12-17
Granted: 2021-04-01
Abstract: Construction element for creating a tunnel, tunnel comprising such an 
element and methods for constructing such an element and such a 
5 tunnel 
Construction element for creating a tunnel, comprising a first incompressible 
layer (6) of concrete and a second compressible layer (7) securely fastened 
to the first layer (6) to form a monoblock prefabricated construction element 
10 configured to be integrated in a section of the tunnel during creation of the 
tunnel, the second layer (7) comprising a plurality of devices (8) each having 
a solid body (9) integrating an empty space (10).  
(Figure 2)
2/10 
23 
3 
12 7a 7a 
-z ----- --------- ---- ------- -------- ---------------- ----- ---- --- --------------- ------ ---- -------- --------------- -- ---- ---- ---- -- ---------------- ----------- ----------------
F . ...... ..... ... . .... .  ... . ... ......... .............. .  
.................. ..................  ..... ..... ........ .... .  .............................  
Gi C) 0 0 
"0 0" 
9 
0 
10 
E 11 
0 0 0 4--, 8 
0 0 J- V--- 7 
......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  
......................................  ................................. ....  .......................................  ......................................  ......................................  6 ..................................... .  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  ......................................  11 , 1 1 , 1 1 , 1 1 1 , 1 1 1 , 1 1 1 , ' l l ' ' ' ' I ' l l ' ' I .... I 
FIG. 2