Glossary entry (derived from question below)
Portuguese term or phrase:
túneis de ataque
English translation:
heading tunnels
Portuguese term
Portugal
EN Translator
Native in: English (Variant: UK) 
, Portuguese (Variant: European/Portugal)
Works in: Portuguese to English, Spanish to English
túneis de ataque
The entire sentence doesn't make any sense to me. Any ideas?
Thanks in advance for your help!
| 3 | heading tunnels |
Ana Vozone
|
| 4 +1 | approach tunnels for underground works |
airmailrpl
|
| 3 | access shaft |
Matheus Chaud
|
| 2 | attack tunnels |
Carolyn Oliveira
|
Mar 4, 2016 18:51: Ana Vozone Created KOG entry
Proposed translations
Will do!
Native in: Portuguese (Variant: European/Portugal) 
Works in: English to Portuguese, French to Portuguese, German to Portuguese, and 1 more.
heading tunnels
During its excavation a number of small heading tunnels were needed to drain some 16,000 gallons of water an hour.
Moreover, the Austrian method required the drilling of two heading tunnels which would, initially, be more expensive?“
| Obrigada Ana! |
United States
attack tunnels
http://www.timesofisrael.com/hamas-accelerating-its-tunnel-b...
| Thanks, Carolyn, but I think that's something else. This is for a hydroelectric facility. Nothing to do with actual attacks! |
Brazil
Technical - Fast - good price - accurate
Native in: English (Variant: US) , Portuguese (Variant: Brazilian)
Works in: English to Portuguese, Portuguese to English, English, and 1 more.
approach tunnels for underground works
Construction of underground works in Shanghai, PRC
www.sciencedirect.com/science/article/.../08867798909013...
ScienceDirect
For nearly thirty years, Shanghai has been constructing underground works designed ... These underground projects have included subway tunnels, sewage and .... The approaches at both ends of the tunnel were built by the cut-and-cover or ...
Design & construction of Approach tunnel & Chandpole ...
www.dgmarket.com/tenders/np-notice.do?noticeId=5586973
Design & construction of Approach tunnel & Chandpole station : by cut & cover method for underground works in east-west corridor of stage 1 of metro.
[PDF]Tunnelling & Underground Space - Atkins
www.atkinsglobal.com/.../Tunnelling - Rail_2012.pdf
Atkins
permanent works, including: • design of a steel shove frame for the Tunnel Boring Machine. • design of ... West Rail Tsuen Wan West Station Approach Tunnels,.
| Obrigada! |
Brazil
IT Specialist • M.A. in Linguistics
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese, Spanish to Portuguese, Portuguese to English, and 1 more.
access shaft
http://repositorio.roca.utfpr.edu.br/jspui/bitstream/1/3493/...
"Túnel de Ataque: Túnel realizado para que seja possível fazer a escavação."
Poço de ataque = access shaft
http://www.proz.com/kudoz/portuguese_to_english/construction...
Definição de access shaft:
https://en.wikipedia.org/wiki/Tunnel
"A temporary access shaft is sometimes necessary during the excavation of a tunnel. (...) **Once the access shafts are complete (...) excavation can start.**"
| Obrigada Matheus! |
Discussion
Your reason does not make sense - the glossary entry should be exactly the option that you chose to use.