洛惠渠灌区地下水动态变化规律研究

为了准确了解洛惠渠灌区地下水资源的动态变化特征,以灌区1955~1990年的实测水文资料为基础,对洛惠渠灌区地下水资源多年开发利用状况下的水位动态和水质变化进行了综合评价。结果表明,该灌区地下水多年补给量整体呈上升趋势,在人类活动的影响下水位变动很大;灌区水质多年平均矿化度为2.48 g/L,属微咸水,而矿化度随水位上升呈淡化趋势,又由于地形地貌的差异,全灌区的矿化度分布并不均匀。因此,应合理建立灌区水资源优化调度系统,确保将地下水位控制在一定的变化范围之内,并进一步加强水情、水质的动态监测预报与调控,强化灌区地下水资源的开发利用与保护。

Investigation on dynamical rules of groundwater in Luohui trench irrigation district

To accurately understand the characteristics of dynamical groundwater resources in Luohui trench irrigation area,based on the field hydrographic data of the year from 1955 to 1990,the groundwater level movement and water quality change of Luohui trench were comprehensively appraised under the development and utilization of the water resources for many years.The results of analysis show that the groundwater supply amount of this trench has been rising on the whole for many years,the water level changes greatly under the influence of the human's activity;the average mineralization of water quality for many years in irrigated area is 2.48 g/L,belonging to the light salt water,and mineralization assumes minishing along with the falling of the groundwater depth.Due to the difference of the topographic form and the physiognomy of this irrigation area,it makes mineralization distributing asymmetrical in the whole irrigated area.Therefore,it should be set up the optimized attemper's system of the water resources rationally in the irrigation area to insure that the water level is controlled within certain change range,and should be further strengthened to monitor-predict and regulate the water condition and dynamical quality,and therefore to develope,utilize,and protecte the groundwater resources in Luohui trench.