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sjaelvgaoende mask foer at laegga ledningar under bottenytan i vattendrag och foer at graeva franz dem
sjaelvgaoende mask foer at laegga ledningar under bottenytan i vattendrag och foer at graeva franz dem
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机译:自走式面罩,用于在河道中的水面以下铺设管道,并用于graeva franz他们
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摘要
A self-propelling device for burying and digging up subsea conduits laid on beds of an incoherent material. The device has: disintegrating members using high pressure water jets to create a slurry of material, digging members having suction members which draw the suspension prepared by the disintegrating members, thus leaving a trench behind, and displacement members for moving the device on the seabed astride the conduit.
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