都市における雨水源制御の1時間の設計嵐を得るための統計的方法
Sheng Wang1,2, Wanzhen Wei1, Lidan Feng1
1State Key Laboratory of Water Pollution Control and Green Resource Recycling, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
まとめ
この研究では,都市部の雨水管理のための1時間レベルの設計嵐法が導入され,ソース制御のサイズが改善されます. この新しいアプローチは,古い毎日の降雨量方法とは異なり,降雨の持続時間と強さを考慮することによって,設計が目標を達成することを保証します.
科学分野:
- 環境工学
- 水学
- 都市計画
背景:
- 現在,都市部の雨水源の制御設計は,雨量と流出量の関係に依存しており,これには重要な雨量持続時間データが欠けている.
- この欠陥は,ソース制御の正確なサイズ設定と望ましい設計目標の達成を妨げます.
研究 の 目的:
- 都市の雨水源の制御のための統計的に堅牢な,時間レベルの設計嵐の方法論を開発する.
- 雨の持続時間と強度を取り入れることで,源制御設計の信頼性を高める.
主な方法:
- 時刻レベルでのイベントの識別とデザインの嵐イベントセットのコンセプトを実装します.
- 設計目標,降雨量,持続時間,最大1時間の降雨量との関係を確立する方法を開発した.
- 6つの気候条件でモデルベースのケーススタディを使用しました.
主要な成果:
- 降雨量制御は,降雨イベントのパーセンチル制御よりも,設計目標としてより効果的であることが示されました.
- 多様な気候における降雨量と持続時間との間に強い対数相関 (0.84540.9868) が発見された.
- 最大1時間の降雨データは,効率的な流出管理のために土壌の水伝導性を計算するのに役立ちます.
結論:
- 提案されている時限設計の嵐は,都市における雨水源の制御のより正確で信頼性の高い基礎を提供します.
- この方法は,日々の降雨量に基づくアプローチの限界を克服し,重要な持続時間と強度パラメータを含みます.
- 1時間単位で設計された嵐は 噴出源制御の効率を高め, 流出ピークの管理を良くし, 溢出を防止します.
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