機械排水計画規模決定に関するシミュレーション的研究

• 田中 礼次郎

  島根大学農学部

• 福島 晟

  島根大学農学部

• 角屋 睦

  京都大学防災研究所

書誌事項

タイトル別名

• Finding an Optimal Drainage Pump Capacity by Applying Stochastic Simulation Techniques

抄録

The stochastic techniques for generating or supplementing hydrological simulated data such as heavy rainfall at a place and water level hydrograph in a lake were generally discussed by the authors in previous papers. Besides such data processing, however, there remain some problems to be taken into consideration in the practice of optimal design of drainage systems in a drainage basin. Then, the methodology for finding an optimal drainage pump capacity in a drainage basin composed mainly of paddy fields is developed in this paper by applying the techniques of stochastic simulation as a goal of our studies. The discussion is carried out in detail by taking an example in the Anba River Basin facing to Lake Shinji near Matsue, Japan. The content is outlined as follows:<BR>(1) The data of rainfall over 30 mm for one-day storm and 50 mm for two and three-day storms in summer at Hirata Station near the basin are generated for a period of 60 years. These data are distributed for each sub-period corresponding to the growth stage of crops every year. For the generated and distribution of the data, the techniques of the Monte Carlo method are utilized.<BR>(2) Runoff hydrographs at the outlet of the basin are estimated by using unit-hydrographs constructed corresponding to the magnitude of rainfall depth in the basin.<BR>(3) Hydrographs of water level of Lake Shinji at Kimachi Station near the mouth of the Anba River are obtained through rainfall depths at Hirata by the help of regressional analysis.<BR>(4) Hydrographs of runoff discharge at the outlet of the basin are changed to those of inundation water level by considering the water volume exhausted through the river channel and hypothetical drainage pump.<BR>(5) Inundation damage is estimated for each hypothetical pump capacity for a period of 20 years that means the pump life. Through the evaluation of damage, the gross benefit produced by installation of the hypothetical pump is calculated. Costs of installation, operation and maintenance of the hypothetical pump are also estimated. Through such a procedure, the benefit is easily found to reveal the lower limit of the optimal capacity of drainage pump.

収録刊行物

• 農業土木学会論文集

  農業土木学会論文集 1973 (46), 34-44, 1973

  社団法人 農業農村工学会

詳細情報

• CRID: 1390282679519589632
• NII論文ID: 130004346947
• DOI: 10.11408/jsidre1965.1973.46_34
• ISSN: 18847234
• ISSN: 03872335
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可