The Optimization of Monitoring Networks for Confined Water in Hohhot, Inner Mongolia
内蒙古呼和浩特市承压地下水水位监测网优化

The quantitative evaluation of the rationality of the groundwater monitoring network is particularly important for the precise acquisition of high quality monitoring data. In this paper, the existing monitoring networks for confined water in Hohhot plain area was chosen as the research target and the standard deviation of estimation error was adopted as the parameter for evaluating the rationality of the monitoring networks. With the aid of ArcGIS geological statistical module, the interpolation was performed on the study points by dint of Kriging interpolation model to acquire the contour line of the standard deviation of the estimation error. The results show that the standard deviation of the estimation error of the monitoring water level changed from 0.47~4.44 (before optimization) to 0.5~0.8 (after optimization, except for the area near the southwest boundary of the study area). The overall standard deviation of the estimation error significantly decreased. The optimized monitoring network can satisfy the monitoring accuracy and, at the same time, the operation cost of the monitoring network can be reduced to a large extent. The research results can preliminarily provide a better optimizing monitoring well layout scheme for the confined water-level monitoring of the Hohhot plain, and can provide reliable scientific data for future research on the rational development and utilization of confined water and the related environmental-geological problems, which will be of high practical importance.