水资源与水工程学报
水資源與水工程學報
수자원여수공정학보
Journal of Water Resources and Water Engineering
2015年
5期
109-113
,共5页
郝曼秋%常虹%陈高林%高成%陈尚坡
郝曼鞦%常虹%陳高林%高成%陳尚坡
학만추%상홍%진고림%고성%진상파
洪峰流量%非恒定流法%城市防洪%滨海山丘区
洪峰流量%非恆定流法%城市防洪%濱海山丘區
홍봉류량%비항정류법%성시방홍%빈해산구구
peak flow%unsteady flow calculation method%urlan flood control%coastal mountainous area
我国滨海山丘区城市上游有山丘区,洪水下泄速度较快;下游受到潮水的顶托作用,内河洪涝水无法外排入海,洪涝灾害频发. 城市化的进程也改变了原有下垫面的产汇流特性,既不能采用原有天然流域设计洪水计算方法,也不能采用城市排水的计算方法. 论文针对快速城市化中的滨海山丘区的特点,分析了城市市政排水计算公式、水利推理公式和非恒定流法之间的区别,提出了利用推理公式、管道汇流和非恒定流法相结合计算小流域设计洪水的方法. 以赣榆县柘汪-石桥片区为例,分别采用上述3种方法计算其设计洪水. 结果表明:非恒定流方法的计算结果比推理公式方法小,该方法比较符合滨海山丘区的洪水特性,可为城市建设和河道规划提供依据.
我國濱海山丘區城市上遊有山丘區,洪水下洩速度較快;下遊受到潮水的頂託作用,內河洪澇水無法外排入海,洪澇災害頻髮. 城市化的進程也改變瞭原有下墊麵的產彙流特性,既不能採用原有天然流域設計洪水計算方法,也不能採用城市排水的計算方法. 論文針對快速城市化中的濱海山丘區的特點,分析瞭城市市政排水計算公式、水利推理公式和非恆定流法之間的區彆,提齣瞭利用推理公式、管道彙流和非恆定流法相結閤計算小流域設計洪水的方法. 以贛榆縣柘汪-石橋片區為例,分彆採用上述3種方法計算其設計洪水. 結果錶明:非恆定流方法的計算結果比推理公式方法小,該方法比較符閤濱海山丘區的洪水特性,可為城市建設和河道規劃提供依據.
아국빈해산구구성시상유유산구구,홍수하설속도교쾌;하유수도조수적정탁작용,내하홍로수무법외배입해,홍로재해빈발. 성시화적진정야개변료원유하점면적산회류특성,기불능채용원유천연류역설계홍수계산방법,야불능채용성시배수적계산방법. 논문침대쾌속성시화중적빈해산구구적특점,분석료성시시정배수계산공식、수리추리공식화비항정류법지간적구별,제출료이용추리공식、관도회류화비항정류법상결합계산소류역설계홍수적방법. 이공유현자왕-석교편구위례,분별채용상술3충방법계산기설계홍수. 결과표명:비항정류방법적계산결과비추리공식방법소,해방법비교부합빈해산구구적홍수특성,가위성시건설화하도규화제공의거.
There are hilly regions in coastal hilly cities .The flood discharges rapidly due to the upstream hilly areas.What's more,the drainage of rivers may be influenced by the backwater effect of the tide , which makes the flood disasters be more frequent in these areas .Urbanization has also changed the runoff characteristics of original underlying surface .Neither the calculation method of design flood of natural riv-er nor the calculation method of city drainage can be used in these areas .In view of the characteristics of small watershed in hilly areas of coastal cities ,the paper analyzed the difference between the calculation formula of city municipal drainage , water conservancy reasoning formula and unsteady flow calculation method.It proposed the calculation method of design flood in small watershed which was based on reason-ing formula,pipe junction and unsteady flow calculation method .The paper took Zhewang -Shiqiao dis-trict of Ganyu county as case study and used the above three methods to calculate design flood .The results gotten by unsteady flow calculation method is smaller than that by reasonning formular .This method is more in line with the characteristics of flood in coastal hilly region .The result can provide a basis for city construction and river planning .