WATER PIPES SUBJECTED TO SHALLOW BURYING UNDER THE PAVED ROAD OF A COLD REGION

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  • 寒冷地の舗装路下における水道管の浅層埋設に関する検討
  • カンレイチ ノ ホソウロ カ ニ オケル スイドウカン ノ センソウ マイセツ ニ カンスル ケントウ

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Abstract

 Water pipes laid intensively during the period of rapid economic growth are all now degraded, so their improvement or renewal nationwide is urgent. As a result, the study and execution of shallow burying based on deregulation are underway in order to reduce costs and shorten the renewal period in warm regions. A cold district like Hokkaido requires water pipes to be laid basically below the frost penetration depth. Even in such a region, it is important to work on the extent to which the pipe can accept shallow burying. In this research, we have used a two-dimensional heat transfer analysis to review the burying depth in detail according to the earth temperatures measured around water pipes laid under a paved road in Kitami City in the eastern part of Hokkaido and in consideration of frost risks.

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