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A platform for research: civil engineering, architecture and urbanism
Underwater installation construction method for submarine pipeline underwater holing operation under pressure
The invention is suitable for the technical field of submarine pipeline maintenance and transformation, and discloses an underwater installation construction method for submarine pipeline underwater holing operation under pressure. The method comprises a mud removing step, a cement balance weight layer and anticorrosive layer removing step, a grinding step, a polishing step, a protection frame assembly skid underwater mounting step, a tapping machine assembly mounting step, a testing step, a tapping step and a dismounting step, wherein the mud removing step comprises the step of removing mud below a pre-installed mechanical tee joint part of the submarine pipeline to form a foundation pit used for providing an operation space for a diver to perform suspended operation beside the submarinepipeline. According to the method, the phenomenon that mud is raised due to the fact that the diver touches the bottom during operation can be effectively reduced, so that the visibility of seawater at a construction site is improved, the influence of tidal large water flow on diving operation is effectively reduced, and the underwater working time of the diver is prolonged; and finally, a good construction condition is created for underwater pressure tapping of the submarine pipeline under the sea condition that muddy water and tidal water flow influence is large.
本发明适用于海底管道维护改造技术领域，公开了一种海底管道水下带压开孔作业水下安装的施工方法，其包括除泥步骤、水泥配重层和防腐层清除步骤、打磨步骤、抛光步骤、保护框架组橇水下安装步骤、开孔机组合体安装步骤、测试步骤、开孔步骤和拆除步骤，其中，除泥步骤包括在海底管道的预安装机械三通部位下方除泥形成用于给潜水员在海底管道旁侧悬空作业提供操作空间的基坑。本发明，可以有效减少潜水员在作业活动时触底引起扬泥的现象发生，从而改善了施工处海水的能见度，并有效减小了潮汐大水流对潜水作业的影响，利于增加潜水员的水下工作时间，最终为在浑水、潮汐水流影响大的海况下对海底管道水下带压开孔创造了良好的施工条件。
Underwater installation construction method for submarine pipeline underwater holing operation under pressure
The invention is suitable for the technical field of submarine pipeline maintenance and transformation, and discloses an underwater installation construction method for submarine pipeline underwater holing operation under pressure. The method comprises a mud removing step, a cement balance weight layer and anticorrosive layer removing step, a grinding step, a polishing step, a protection frame assembly skid underwater mounting step, a tapping machine assembly mounting step, a testing step, a tapping step and a dismounting step, wherein the mud removing step comprises the step of removing mud below a pre-installed mechanical tee joint part of the submarine pipeline to form a foundation pit used for providing an operation space for a diver to perform suspended operation beside the submarinepipeline. According to the method, the phenomenon that mud is raised due to the fact that the diver touches the bottom during operation can be effectively reduced, so that the visibility of seawater at a construction site is improved, the influence of tidal large water flow on diving operation is effectively reduced, and the underwater working time of the diver is prolonged; and finally, a good construction condition is created for underwater pressure tapping of the submarine pipeline under the sea condition that muddy water and tidal water flow influence is large.
本发明适用于海底管道维护改造技术领域，公开了一种海底管道水下带压开孔作业水下安装的施工方法，其包括除泥步骤、水泥配重层和防腐层清除步骤、打磨步骤、抛光步骤、保护框架组橇水下安装步骤、开孔机组合体安装步骤、测试步骤、开孔步骤和拆除步骤，其中，除泥步骤包括在海底管道的预安装机械三通部位下方除泥形成用于给潜水员在海底管道旁侧悬空作业提供操作空间的基坑。本发明，可以有效减少潜水员在作业活动时触底引起扬泥的现象发生，从而改善了施工处海水的能见度，并有效减小了潮汐大水流对潜水作业的影响，利于增加潜水员的水下工作时间，最终为在浑水、潮汐水流影响大的海况下对海底管道水下带压开孔创造了良好的施工条件。
Underwater installation construction method for submarine pipeline underwater holing operation under pressure
YAN XIANGFENG / HU SONG / XIAO XIAOLING / LI ZONGWEI / XIANG ZHAOHUA / XU JIN / CHENG WEI / GAO XIYUAN / ZHANG JIE
Patent
Electronic Resource
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