The multi-rigid-body discrete element method was proposed for the analysis of deep-ocean mining pipe system.

采用多刚体离散元方法对长管线系统进行计算分析。

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Deep ocean mining pipe has a large deflective displacement under the wave, currents and dragging by mining vessel in ocean environment.

深海采矿扬矿管处于海洋环境之中，受海浪、海流以及采矿船拖航的影响，会发生大的偏移。

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The Udachnaya Pipe is a diamond mine inRussia. The owners of the mine plan to cease its operations in 2010 -in favor of underground mining.

这是俄罗斯一处钻石矿，矿主计划于2010年停止采矿，这样将有利于地下开采。

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Another pipe would extend to the port of Ilo, further south, a centre for mining activity, which could be the export terminal for markets on the Pacific rim.

ECONOMIST: Peru

Back on land, mining-company engineers say new techniques, such as dissolving minerals and sucking them up through a pipe or extracting ore with high-powered water jets, could increase recoverable reserves.

WSJ: Exhausting the Earth's Resources? Not So Fast