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17:25 Sep 5, 2003 |
German to English translations [PRO] Tech/Engineering - Mining & Minerals / Gems / mining | |||||
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| Selected response from: Kim Metzger Mexico Local time: 05:57 | ||||
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Summary of answers provided | ||||
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3 +2 | slices |
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flächenmäßige Abbauscheiben slices Explanation: I don't know what to do with flächenmäßige. Isn't it obvious that a slice is an area? 1. "Classic" room and pillar applies to flat bedded deposits with moderate to large thickness, also to inclined deposits with larger thickness. Mining the orebody creates large open stopes where trackless machines can travel on the flat bottom. Orebodies with large vertical height are mined in horizontal slices, starting at the top, benching down in steps. 2. "Post " room and pillar applies to inclined ore bodies dip angle from 20 to 55 degrees with larger vertical height, where mined out space is back filled. The fill keeps the pillars stable and serves as work platform while mining the next ore slice, lift. Mineralisations with larger vertical height are mined in slices. Mining starts at the top, below the hanging wall or roof. At this stage, roof control and rock bolting is done with the back at a convenient height. Post Room and Pillar Description Post-pillar mining is a cross-breed of room and pillar and cut and fill stoping. Post pillar mining recovers the mineralisation in horizontal slices, starting from a bottom slice, advancing upwards. Pillars are left inside the stope to support the roof. The mined-out stope are back filled with hydraulic tailings and the next slice mined by machines, working from the fill surface. Pillars are extended through several layers of fill and the fill is contributing to the pillar's supporting ability. Reference: http://www.atlascopco.com/RDE%5Cwebsite.nsf/0/102CEB021C7BFD... Langenscheidts Fachw�rterbuch Technik und angewandte Wissenschaften |
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