STUDY ON COLLECTION AND REDISTRIBUTION OF CHANNEL STORAGE GENERATED IN OPEN CHANNEL TRUNK NETWORK FOR IRRIGATION

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  • 開水路幹線系用水ネットワークにおける水路内貯留の回収と再分配に関する研究
  • カイスイロ カンセンケイ ヨウスイ ネットワーク ニ オケル スイロ ナイ チョリュウ ノ カイシュウ ト サイブンパイ ニ カンスル ケンキュウ

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Abstract

 Almost all irrigation systems in Japan have, until now, been operated through supply oriented operation based on upstream control of open channel trunk systems that support paddy field cultivation. This study proposes an existing system renewal method for existing trunk systems that will permit response to new irrigation water demand trends and prevent problems with river management by introducing downstream control concept at appropriate locations on the system. The system was verified by carrying out a one-dimensional unsteady flow simulation. Based on the results, the concept of the design of intermediate regulation facilities and specific installation methods intended to effectively use the channel storage of the existing system were organized in response to problems encountered in the field.

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