海底管道 + 海底管道终端管汇底拖法施工技术——以安哥拉渔港油库扩建项目多点系泊工程为例 Submarine Pipeline + PLEM (Pipe Line End Manifold) Bottom Towing Construction Technology——By Taking the CBM (Multi-point Mooring) Project of the Angolan Fishing Port Oil Depot Expansion Project for Example
采用底拖法铺设海底管道时，将海底管道终端管汇(PLEM)作为拖拉头，利用拖轮和浮筒、辊轮等设施，可一次性将PLEM与海底管道同时安装到位。该方法具有受海浪和侧向流影响小、工期短、成本低、施工灵活性高、风险可控等优点。研究了底拖法施工技术在工程实际中的应用情况，系统阐述了底拖法的关键施工工艺。
When bottom-tow method was used to lay the submarine pipeline, PLEM could be used as a pulling head. The tug and the auxiliary buoy, roller and other facilities could be used to install the PLEM and the submarine pipeline at the same time. It has the advantages of little influence by the waves and lateral flow, short construction period, Low cost, high construction flexibility, and controllable risks. The application of bottom dragging construction technology in engineering practice is introduced. The key construction technology of bottom drag method is expounded systematically.
