基于Kriging法优化原莱芜市地下水监测井网

Optimization of Groundwater Monitor Well Networks in Former Laiwu City Based on Kriging Method

针对原山东省莱芜市地下水监测井网分布不合理的问题,以研究区裂隙岩溶水及孔隙水区域为例,运用Kriging法对裂隙岩溶水及孔隙水分布区现有的地下水监测井网进行插值模拟,将计算理论方差值与经验值进行比较,评估并优化现有地下水监测井网的精度。结果表明:优化前的监测井分布的理论方差为1.5475~22.3855,远大于最优经验值0.5~0.6;在裂隙岩溶水及孔隙水区域分别增加25、21眼监测井后,各区域原有监测井分布的理论方差为0.3491~0.5979,均能达到最优,研究区地下水监测井网的分布密度以及空间布局的合理性得到改善。

In view of unreasonable distribution of groundwater monitor well networks in former Laiwu city,Shandong province,taking fissure karst water and pore water areas in the research region as examples,Kriging method was used to interpolate the existing groundwater monitor well networks in the fissure karst water and pore water distribution area.The calculated theoretical variance values were compared with the empirical values,and effective accuracies of the existing groundwater monitor well networks were evaluated and optimized.The results show that the theoretical variance of monitor well distribution before optimization is 1.5475-22.3855,which is far greater than the optimal empirical value of 0.5-0.6.After respectively adding 25 and 21 monitor we ll distribution in the fissure karst water and pore water areas,the theoretical variance of original monitor well distribution in each region is 0.3491-0.5979,which can reach the optimal,and the distribution density and spatial layout of the groundwater monitor well networks in the research region are improved.