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新設ダム湖湛水後の水質変化と,将来水質予測およびその検証に関する研究

新坝湖蓄水后水质变化及未来水质预测及其验证研究

基本信息

批准号：
01550428
负责人：
余湖典昭
金额：
$ 1.28万
依托单位：
Hokkai-Gakuen University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1991
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01550428/
关键词：
水質予測新設ダム貯水池水質選択取水

项目摘要

平成2年度は昨年度に引き続き、研究対象水域である定山渓ダムさっぽろ湖について4回の調査を行うとともに、数理モデルによる水温・濁度解析、タンクモデルによる流入河川流量の解析等について実施した。得られた結果は以下の通りである。1.湛水後の水質変化について;平成元年度と比較すると窒素、リンの濃度もほぼ同レベルであったが、昨年度以上のクロロフィルーaが検出された。出現藻類の優先種はまだ確定していないが、予想を上回る発生量であり、来年度も引き続き検討したい。2.数理モデルによる水温・濁度解析;ほぼ良い結果が得られたが、一時期やや実測値と計算値の整合性が悪く検討課題を残した。その原因は、流入河川水温デ-タに推定値を用いていることにあると考えられ、特に融雪洪水期の計算時には大きな誤差を生むことが分かった。したがって、来年度は流入河川水温の連続観測を実施するとともに、融雪期を含めた河川水温の推定方法についても検討を開始する計画である。3.タンクモデルによる流出解析;降雨による河川流量の応答は、融雪期も含めてほぼ再現できた。しかし、融雪期と融雪期以外の時期を、同一のパラメ-タで計算すると誤差が大きくなるため、季節によるパラメ-タの変更が必要と考えられた。4.選択取水の運用法;選択取水の運用法(取水水位)によって、水温を始めとする水質成分の分布、貯水池内の水の流動形態が、大きな影響を受けることが2年間の調査および計算から明らかになった。今後、水質制御を前提とした選択取水の合理的運用方法を、数理モデルを用いてより詳細に検討を加えたい。

In the year of Pingcheng, there are many problems, such as the introduction of water area, the analysis of the flow into rivers, the analysis of water temperature, the analysis of water temperature, and so on. The results show that the following information is available. 1. After Zhanshui, there is a change in the temperature of the water, and in the year of Ping Chengyuan, the temperature is the same as that of the previous year. It has been found that the first class of algae has made sure that it is necessary to make sure that it is necessary to do so, and that it is expected to do so last time, and introduce it in the coming year. two。 The temperature of the water is analyzed by mathematical analysis, and the results of the good results are satisfactory, and the calculation of the integration problem is not satisfactory. The cause of the accident, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the water flowing into the river, the temperature of the In the coming year, the inflow of water temperature into the river will be affected, and the snow melting period shall include the method of estimation of the temperature of the river. 3. The analysis of outflow, the response of rainfall, the response of river flow, and the reappearance of snow melting period. Weather, snow-melting season, snow-melting season outside the snow-melting season, the same weather weather, the same season, the same season. 4. Select the use of water intake tank, select the use of water intake tank (intake water level), the distribution of water supply components at the beginning of the water temperature, the dynamic pattern of the discharge flow in the sink, and the calculation of the operating temperature for a period of 2 years. In the future, the premise of water control system is to choose a reasonable method for the use of water, and to use mathematical methods to increase the number of users.