考虑漫溢过程的一维堤防溃决分洪计算研究  

Research on One-Dimensional Calculation of Levee Breach and Flood Diversion Simulation with the Consideration of Overflow Process

作　　者：张涛[1] 单既连[1] 亓立云 胡方[1] ZHANG Tao1,SHAN Jilian1,QI Liyun2,HU Fang1(1.Shandong Survey and Design Institute of Water Conservancy,Jinan 250013, China ;2. Shandong Provincial Headquarters for Flood Control and Drought Relief,Jinan 250013, Chin)

机构地区：[1]山东省水利勘测设计院,山东济南250013 [2]山东省人民政府防汛抗旱总指挥部办公室,山东济南250013

出　　处：《人民黄河》2018年第6期53-56,共4页Yellow River

基　　金：水利部公益性行业科研专项(201501054);山东省省级水利科研与技术推广项目(SDSLKY201501)

摘　　要：以平原河道梁济运河为例,考虑漫溢过程进行河道堤防溃决分洪计算。对于由缺口漫溢演变为溃堤的堤防溃决,简化为先漫溢、后溃堤的两阶段溃决过程,河道洪水演进采用MIKE11一维水动力模型,溃决分洪按侧堰自由出流计算。在既定的水力条件及假定溃口尺寸条件下,计算漫溢、漫溃、瞬溃等3种溃决形式的分洪流量、水位过程,相对于一阶段的瞬溃方案,二阶段的漫溃方案的溃决分洪水量较大、溃决时间较长,较符合河道堤防溃决发展过程。Taking Liangji Canal,a plain river as an example,it calculated the levee breach and flood diversion with the consideration of overflow process. For the breach-form evolvement from gap overflow into levee collapse,simplify two stages breach development with overflow occurred first before collapse,used one-dimensional hydrodynamic model with MIKE11 for flood routing and used side weir free flow formula for diversion flow. Under the given hydraulic and assumed breach size conditions,it calculated the breach flow and water level process of different forms included overflow,overflow-collapse and instant collapse. The results show that compared by instant collapse one stage forms,the overflow-collapse form＇s flood volume is larger and breach period is also longer,better reflecting the actual breach development process.

关 键 词：漫溃联算 漫溢 平原河道 MIKE11 

分 类 号：TV131[水利工程—水力学及河流动力学]