bench cut the deposit => cortar em degraus

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Note added at 17 mins (2011-01-11 13:24:38 GMT)
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A bench cut is the result of cutting a section of tread across the side of a hill. If you look at the side profile of this cut it looks like a bench, hence the name. The two basic designs are known as "full bench" and "partial bench." Full bench construction means that the full width of the tread is cut into the side of a hill. The entire tread is dug down to compacted mineral soil. Viewed in cross-section, the tread angles slightly downhill at 3-5%. This is known as outslope. A partial or balanced bench means that part of the hill is cut away and the soil that has been removed is placed at the lower edge of the trail to try to establish the desired width. This is known as a fill slope.
http://www.dirtworld.com/TipsAndTricks/TipsStory.asp?id=426

Catchword: bench cut
Gloss: A terraced or step-like cut in soil, stone, wood, or other material.
Filed under: English, Environment
Part of speech: n.
Quotation: Volunteers will learn how to decrease erosion on slopes by a method called “bench cutting.” They will then make some bench cuts on local trails.
http://www.doubletongued.org/index.php/citations/bench_cut_1...

[PDF]
Doors to Tunneling Technology in Japan - ARAN Doors to Tunneling ...
File Format: PDF/Adobe Acrobat - Quick View
The multi-level bench-cut method was used by dividing the total section area into four levels. To prevent surface settlement, the AGF method, horizontal jet ...
www.mlit.go.jp/road/road_e/irf/pdf/t_1.pdf