银川平原承压水水位监测网优化设计

Optimum design of confined water level monitoring network of Yinchuan Plain

由于引黄量的减少,加上银川平原区内水利工程的修建,改变了地表水和地下水的循环条件,使得地下水系统发生变化,对生态环境产生一定的影响,急需开展相关的研究工作.通过地下水动态分区法将银川平原分成了182个动态类型区,并对银川平原承压水水位监测井进行优化布设后,运用Kriging方法,对银川平原地下水水位监测井优化前后插值误差进行了计算分析.根据优化结果及误差分析,并考虑经济因素,最终确定需在银川平原布设215口承压水水位监测井.对监测井进行优化后,使得监测井能够更有效和准确地监测到地下水位在区域上的时空分布,为区域地下水资源评价、环境保护、农业规划等服务.

For the reason of irrigation amount from yellow river being reduced,and some hydraulic engineering in Yinchuan plain have been built,the cycling conditions of surface water and groundwater have been changed,and the groundwater system changes,and the ecologic environment has been affected.Research work needs to carry out about them.Using groundwater dynamic type method,Yinchuan Plain can be divided into 182 dynamic zones.After optimization designing of confined water level monitoring network of Yinchuan Plain,the results of monitoring network optimization are evaluated by using Kriging method.Comparative analysis before and after interpolation error equivalent line and consider the economic factors,finally,215 monitoring wells of confined water level need to be located in Yinchuan Plain.After optimizing the monitoring wells,it can provide basis for effectively and accurately monitoring the spatial distribution and variation of groundwater levels,and for the regional evaluation of groundwater resources,environmental protection and agricultural planning.