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首页> 外文会议>Pipeline Division Specialty Conference; 20050821-24; Houston,TX(US) >Pipeline Ruptures: High Demand for Water Prompts an Innovative Solution
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Pipeline Ruptures: High Demand for Water Prompts an Innovative Solution

机译：管道破裂：对水的高需求推动了创新的解决方案

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The City of Houston, TX has had three major failures in its large diameter water transmission lines over the last few years. Such failures have required immediate action in order to meet high water demands and to maintain the system's integrity. The first incident involved a puncture inflicted by a drilling contractor in a 96-in (244-cm) water main located in an adjacent city. The pipe was patched from the inside and service was restored within 72 hours. The second incident was the catastrophic failure of a 60-in (152-cm) Prestressed Concrete Cylinder Pipe (PCCP) in the Central Business District (CBD). It was necessary to remedy the situation before the high-demand summer months to avoid significant system pressure reductions. The third failure occurred on a 42-in (107-cm) PCCP line. Because the line was essential to meeting summer demands, a sliplining procedure was used to fix the pipe in time. These instances of failures on water mains, for which the City relies considerably for supply, provide several lessons for the design process. It is important that damage is prevented by providing record drawings of water mains to appropriate government entities, by posting markers, and by monitoring corrosion and pipe defects. Also, the City should prepare contingency plans in the event of the loss of a major transmission main or facility. While handling the three water main failures mentioned, the City and its engineering consultant, Lockwood, Andrews, & Newnam, Inc., developed an innovative plan for handling the need for emergency repairs.
机译：在过去的几年中，德克萨斯州休斯敦市的大直径输水管道出现了三大故障。此类故障需要立即采取行动，以满足高水需求并维持系统的完整性。第一次事件涉及钻井承包商在邻近城市的96英寸（244厘米）水管中造成的刺孔。从内部修补了管道，并在72小时内恢复了服务。第二起事件是中央商务区（CBD）的60英寸（152厘米）预应力混凝土圆柱管（PCCP）发生灾难性故障。有必要在夏季需求旺盛的月份之前对这种情况进行补救，以避免系统压力显着降低。第三次故障发生在42英寸（107厘米）的PCCP线上。由于生产线对于满足夏季需求至关重要，因此使用了衬砌程序来及时修复管道。纽约市在很大程度上依赖于供水的这些水管故障实例为设计过程提供了一些经验教训。重要的是要通过向适当的政府机构提供水管记录图纸，张贴标记以及监视腐蚀和管道缺陷来防止损坏。此外，如果主要的输电干线或设施丢失，纽约市应制定应急计划。在处理上述三个供水干线故障时，纽约市及其工程顾问Lockwood，Andrews和Newnam，Inc.制定了一项创新计划，以应对紧急维修需求。

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