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The influences of soil and nearby structures on dispersion characteristics of wave propagating along buried plastic pipes

机译：土壤与附近结构对埋藏塑料管道波浪分散特性的影响

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Water loss in distribution systems is a global problem for the water industry and governments. According to the international water supply association (IWSA), as a result of leaks from distribution pipes, 20% to 30% of water is lost while in transit from treatment plants to consumers. Although governments have tried to push the water industry to reduce the water leaks, a lot of experts have pointed out that a wide use of plastic pipes instead of metal pipes in recent years has caused difficulties in the detection of leaks using current acoustic technology. Leaks from plastic pipes are much quieter than traditional metal pipes and comparing to metal pipes the plastic pipes have very different coupling characteristics with soil, water and surrounding structures, such as other pipes, road surface and building foundations. The dispersion characteristics of wave propagating along buried plastic pipes are investigated in this paper using finite element and boundary element based models. Both empty and water-filled pipes were considered. Influences from nearby pipes and building foundations were carefully studied. The results showed that soil condition and nearby structures have significant influences on the dispersion characteristics of wave propagating along buried plastic pipes.
机译：分配系统的防水是水产业和政府的全球问题。根据国际供水协会（IWSA），由于分配管道泄漏，20％至30％的水在从治疗厂到消费者的运输过程中丢失。虽然各国政府试图推动水工业以减少水泄漏，但很多专家都指出，近年来广泛使用塑料管代替金属管道在使用电流声学技术检测泄漏时造成困难。塑料管道泄漏比传统的金属管更平静，与金属管相比，塑料管道具有与土壤，水和周围结构的耦合特性非常不同，如其他管道，道路表面和建筑基础。用基于有限元和边界元件的模型在本文中研究了沿着掩埋塑料管传播的波的分散特性。考虑了空和充分的管道。仔细研究了附近管道和建筑基础的影响。结果表明，土壤条件和附近的结构对沿着掩埋塑料管道传播的波的色散特性具有显着影响。

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