Proposed New Dam Turbidity Countermeasure Method Applying an Agricultural Water Use System
Rivers and water cycling structures including artificially constructed dams, storage ponds and channels linked to rivers have, over a period of many years, been firmly established in agricultural regions. Based on the investigation of Dam C in Japan, new approach against dam turbidity problem is proposed in this paper. This method utilizes the above-mentioned water cycling structures as agricultural water use systems and details of it are summarized below. ① To the irrigation dam reservoir where stratification is formed then disrupted repeatedly as part of a large repetitious annual cycle, selective discharge methods is effective. ② Turbid water taken selectively from the dam can be stored to provide the pond with the functions of a sediment check dam or settling basin. ③ During a non-irrigation period, paddy fields can be used to reduce turbidity by actively supplying them with turbid water to treat them as settlement ponds. Using an existing agricultural water use system that forms the water cycle of a drainage basin is a low cost and rational method that conforms with the concept of harmony with nature by not requiring the construction of new facilities and investment of additional energy.
irrigation dam turbidity problem storage pond paddy field agricultural water use
Hiroyuki Taruya Setsuo Ooi Katsuyuki Noguchi Akie Mukai Masahiro Goto
National Institute for Rural Engineering, Tsukuba Science City, Japan 305-8609
国际会议
山东东营
英文
313-322
2007-10-16（万方平台首次上网日期，不代表论文的发表时间）