一维非恒定流在城市水系规划水利计算中的应用

摘要

Hydraulic calculation have the following features such as uncertain cross section water,hydraulic exchange complex,uncertain flow direction,and so on,The traditional calculation method of water conservancy was applicable to water conservancy calculation of the urban water system.One-dimensional unsteady flow hydraulic calculation was based on mathematical methods of water flow movement which described the dynamic reflect the method of water flow movement state,it can well meet the requirements of the water conservancy calculation in the urban water system planning.Taking water conservancy calculation of the water stream remediation plan in nanhai district,foshan city,guangdong province,as an example,application of one-dimensional unsteady flow in hydraulic calculation of the urban water system planning were discribed.%城市水系规划中水利计算具有断面汇水面积不易确定,水力交换复杂,流向不易确定,存在往复流现象,受水系边界条件影响显著,水系上控制建筑物种类繁多不能忽略等特点,传统的水利计算方法不能很好的适用于城市水系的水利计算。一维非恒定流水力计算是基于对水流运动的数学方法描述动态反映河网水流运动状态的方法,能很好满足城市水系规划对水利计算的要求。以广东省佛山市南海区里水水系整治规划中的水利计算为例,说明非恒定流方法在城市水系规划水利计算中的应用。