Glossary entry

Italian term or phrase:

fori di rilevaggio

English translation:

lifter holes

Added to glossary by Catherine Harrison
Aug 8, 2004 20:37
19 yrs ago
Italian term

fori di rilevaggio

Italian to English Tech/Engineering Mining & Minerals / Gems drilling, quarrying
Quarrying limestone: "nonché necessitano di maglie di preforazione diverse e di procedimenti di sottoperforazione, o fori di rileavggio, legati alla giacitura degli strati ..."
Proposed translations (English)
4 +2 lifter holes
3 survey holes
2 pile shaper (?)

Proposed translations

+2
44 mins
Selected

lifter holes

vedi sito e termini minerari
McGraw-Hill
Peer comment(s):

agree Bourth (X) : Indeed!
11 mins
agree gmel117608
7 days
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4 KudoZ points awarded for this answer. Comment: "Thank you, Vittorio, and thank you Bourth for the excellent explanations!"
22 mins

survey holes

[PDF] Type of Report: Quarterly Reporting Period Start Date: October 1 ...
File Format: PDF/Adobe Acrobat - View as HTML
... three new cutting shoes were conducted using Texas Cream Limestone drilling samples ... of
the PTCS were conducted in a second additional survey hole, with 16.9 m ...
www.joiscience.org/DOE/ PDFs/Progress_Reports/JOI_QR1.pdf
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40 mins

pile shaper (?)

I don't speak a word of Italian so don't understand your quote, but the expression is so similar to the French "forage de relevage" that I have to suggest this. A "pile shaper" is one of the series of holes drilled into the quarry face being mined. The position of the holes and the timing of the detonation "shape" the resulting pile of broken rock, making it easier to subsequently load it into trucks, etc.

From my notes:

"pile shapers" = forages de relevage - "The bottom corner trimmer holes are sometimes fired with a longer delay ... this, together with slightly heavier charging, improves the shape of the rock pile for loading".


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Note added at 55 mins (2004-08-08 21:33:33 GMT)
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Despite it having been in my glossary for about 20 years, I haven\'t found this on the Web. My gloss. also refers to lifter holes:

<<lifter holes
Shotholes drilled along the floor of a tunnel for lifting the rock to
floor level. They are fired after the cut holes, or by delay detonators in the round.>>
[http://www.maden.hacettepe.edu.tr/dmmrt/dmmrt665.html]

And the following site explains that lifter holes serve to shape the muck pile.
<<The ideal blast results in breaking the rock such that few pieces are too large to handle; however, excessive fines usually mean waste of explosive energy. The muck pile can be controlled by the timing of the lifter hole detonation. If they are set off before the crown trim holes, the pile will be compact and close to the face; if they are set off last, the pile will be spread out, permitting equipment to move in over the muck pile.>>
[http://www.usace.army.mil/inet/usace-docs/eng-manuals/em1110...]
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