衡水湖渗漏损失量计算分析

Analysis and Calculation of Leakage Loss Quantity of Hengshui Lake

湖泊渗漏量是湖泊水量平衡的一项重要因素。湖泊渗漏量计算方法采用水量平衡法,以湖泊月平均水位相应水面面积落差计算蓄水量变化,再考虑引水、用水、蒸发、降水等水量变化,其差值为湖泊渗漏量。采用2003-2012年衡水湖水位、降水量、蒸发量、引水量、用水量等观测资料,筛选出对渗漏量较小的月份,建立月平均水位与月平均渗漏量相关关系,计算出衡水湖年平均单位面积渗漏量为13.1万m^3/km^2。准确计算湖泊渗漏量,对合理开发利用水资源、制定水资源调度方案由重要作用。

Lake Leakage is an imp ortant factor of the b alance of lake water quantity. The computational method of lake leakage adopted water balance analysis for the calculation model. We calculated water storage variation by using the differ-ence between monthly mean water lever and water level areas, considered water quantity change, such as diversion, water use, evaporation and precipitation, etc. The difference value was lake leakage. Based on the observation data of water level, precipitation quantity, evaporation quantity, diversion quantity, water consumption ,etc of Hengshui lake in 2003-2012 ,we selected the less quantity month of leakage, created the relationship between monthly mean water level and monthly mean leakage, and figured out that the average unit area of leakage in Hengshui lake is 131,000 m^3/km^2. Calculat-ing lake leakage quantity accuratly plays an improtant role in reasonably developing and using water resource and drawing up the scheduling scheme of water resource.