岩溶区域洪水计算方法浅析  

Analysis of flood calculation method in Karst area

作　　者：李晓东 Li Xiaodong(Guizhou Sanze Engineering Design Consulting Co.,Ltd.,Guizhou 550081,Guiyang)

机构地区：[1]贵州三策工程设计咨询有限公司,贵阳市550081

出　　处：《吉林水利》2022年第3期14-18,共5页Jilin Water Resources

摘　　要：贵州省为我国典型的喀斯特地貌区,区内洼地、溶洞等到处可见,将集雨区分割成大小不一的汇水区,并通过伏流、盲谷、地下岩溶通道排泄。集雨区内的伏流、洼地及地下岩溶通道对洪水有一定的削峰滞洪作用,在计算设计洪水时应给予考虑,否则将使设计洪水成果偏大,不利于涉水建设项目的建设成本管理。多岩溶通道相比单岩溶通道而言,洪水的计算更加复杂,因此,文章以贵州省荔波县架桥水库工程为例,通过设计流域的历史洪水调查成果,并结合设计流域内各汇水分区汇流、出流的实际情况,灵活划分汇流分区并计算各分区设计洪水和出流过程,并基于洪量调节控制,考虑洪水叠加后得到设计断面的设计洪水,对复杂强岩溶地区的设计洪水计算方法的研究有一定的指导和参考意义。The topography of Guizhou province is typical karst area within China,where depressions and karst caves can be seen everywhere.The rain-collection area is divided into catchment areas of different sizes and discharged through latent flow,blind valleys and underground karst channels.The underground stream,depression and underground karst passageway in the rain gathering area have a certain effect on flood peak cutting and flood detention,which should be considered in the calculation of design flood.Otherwise,the resulat of design flood will be too large,which is not conducive to the construction cost management of water-related construction projects.Compared with the single karst channel,the flood calculation of the multi-karst channel is more complex.Therefore,taking the Jiaqiao Reservoir Project in Libo County,Guizhou Province as an example,through the historical flood investigation results of the design basin,the catchment zoning is flexibly divided and the design flood and outflow process of each zone are calculated,where the actual situation of the confluence and outflow of each catchment zone in the design basin were combined,and based on flood volume regulation and control.The design flood of the design section is obtained after considering the flood superposition,which has a certain guidance and reference significance for the study of the design flood calculation method in the complex karst area.

关 键 词：强岩溶 洪水计算 水利工程 

分 类 号：TV122.3[水利工程—水文学及水资源]