南水北调中线小南河串流片防洪水位计算  

Flood Surface Calculating of Overflow-Area Section of Xiaonan River in the Middle-Route of South-to-North Water Diversion Project

作　　者：黎春松 刘伟 

机构地区：[1]河南省水利勘测设计研究有限公司,郑州450016

出　　处：《南水北调与水利科技》2011年第4期149-151,共3页South-to-North Water Transfers and Water Science & Technology

摘　　要：传统的多河流串流计算主要采用水库联调的方法,把串流的各条河流概化为静态水库,库水位水平且不考虑横向流动。为解决串流区水流的横向流动及水面线并不总像库水位一样水平的问题,采用二维非恒定流数学模型计算串流区洪水演进。通过概化地形、考虑入流、糙率、边界条件和水流的横向流动等因素,计算出了整个串流区域的水面线、水深、流速、出流等水力要素,并给出洪水演进模拟图,为确定河流与总干渠交叉建筑物的规模、总干渠左岸沿线水面线和对沿线村庄、农田的防洪影响提供了可靠的依据。The traditional method of overflow-area calculating is reservoir joint dispatching, which abstracts the rivers of overflow-area as reservoirs, and regards the water level of reservoirs as horizontal and do not consider the lateral flow. In order to solve the problems caused by the above assumptions, this paper uses the two-dimension unsteady flow mathematical model to simulate the flood evolution of overflow-area rivers. The two-dimension unsteady flow mathematical model calculates the hydraulic elements such as water level, depth, flow velocity, flow by means of abstracting terrain and thinking of inflow, roundness, boundary conditions, as well as the lateral flow. Also, it gives the chart of flood evolution. This study could provide reliable foundation in terms of determination of the scale of cross building, water level of left bank of main channel and flood influence of the village.

关 键 词：水库联调 二维非恒定流数学模型 交叉河流 左岸排水 总干渠 流速分布 淹没影响 水面线 

分 类 号：TV133[水利工程—水力学及河流动力学] TV68