09:34 Mar 18, 2007 |
German to English translations [PRO] Tech/Engineering - Construction / Civil Engineering / tunneling | |||||
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| Selected response from: David Moore (X) Local time: 02:15 | ||||
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Summary of answers provided | ||||
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4 | extendable; which can be driven/pushed forwards |
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3 | telescopic/sliding |
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telescopic/sliding Explanation: A Double Shield TBM consists of a rotating cutterhead mounted to the cutterhead support, followed by three shields: a telescopic shield (a smaller diameter inner shield which slides within the larger outer shield), a gripper shield and a tail shield. In normal operation ("double shield mode"), the gripper shoes are energized, pushing against the Reference: http://www.robbinstbm.com/products/tunnel/back_up.shtml |
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extendable; which can be driven/pushed forwards Explanation: I think the answer already posted missed the key point. That is that the whole thing can be pushed forwards into place after cutting away materials at the edges - how otherwise could a shield be pushed into solid ground? [PDF] STUDY ON TBM OPERATION AND MAINTENANCE IN HSUEHSHAN TUNNEL File Format: PDF/Adobe Acrobat - View as HTML Three hydraulically extendable over cutter and. bucket/scraper assemblies to increase over cut from. 55mm to 255mm above front shield to avoid shield ... gip.taneeb.gov.tw/public/Attachment/69211122377.pdf |
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