吉林水利
吉林水利
길림수리
JI LIN WATER RESOURCES
2012年
3期
27-31,34
,共6页
裁弯取直%防洪影响%数学模型
裁彎取直%防洪影響%數學模型
재만취직%방홍영향%수학모형
curving cut-off%influence analysison flood control%mathematical model
河道“裁弯取直”可提高裁弯段上游保护对象的防洪能力，也可能加重裁弯段下游的防洪风险，结合成都市府河某段河道的裁弯取直工程。利用平面二维数学模型计算分析工程前后水位、流速的变化，通过实际的工程得出了较好的结果。
河道“裁彎取直”可提高裁彎段上遊保護對象的防洪能力，也可能加重裁彎段下遊的防洪風險，結閤成都市府河某段河道的裁彎取直工程。利用平麵二維數學模型計算分析工程前後水位、流速的變化，通過實際的工程得齣瞭較好的結果。
하도“재만취직”가제고재만단상유보호대상적방홍능력，야가능가중재만단하유적방홍풍험，결합성도시부하모단하도적재만취직공정。이용평면이유수학모형계산분석공정전후수위、류속적변화，통과실제적공정득출료교호적결과。
Abstract： Curving cut-off is a project measure of channel management in fiver. Not only flood control capabil- ity of the upper beach can be improved with curving cut-off project,but flood risk of the downst ream beach can be aggravated.combining the project of the fiver by curving cut-off in Chengdu,analyse the difference of velocity and depth between the project by using A two-dimensional mathematical model, results show that the main influenced factors are the storage of retarding flood and flood flow velocity. Keywords： curving cut-off;influence analysison flood control; mathematical model
