世界各地的供水干线都面临着一系列问题。它们的效率越来越低，要么是由于腐蚀累积导致ID下降，要么是由于更频繁的断裂。然而，它们占据的地下洞穴仍然是一项潜在的宝贵资产。已经开发了许多方法来使用该资产，一些方法只是简单地覆盖旧管道的孔并提供最小的加固，另一些方法在结构上加固原始管道，从而以最低的成本增强原始资产。 本文介绍了热管（TM）结构衬里系统，并给出了一些在美国使用的例子。

Throughout the world order water mains suffer from a range of problems. They are increasingly becoming less efficient either by virtue of declining ID due to the build up of corrosion or by ever more frequent breakage. However the holes in the ground they occupy remain a potentially valuable asset. A number of methods have been developed to use this asset, some simply coat the bore of the old pipe and provide minimal reinforcement, others structurally reinforce the original pipe thereby enhancing the original asset at minimum cost. This paper discribes the Thermopipe(TM) structural lining system and gives some examples of its use in the US.