The prediction and evaluation of emergency exploitation of groundwater in Zhengzhou City,China

摘要

The study in this paper focus on the aquifer within 350 meters in the area of Zhengzhou City and a 3-D groundwater model is constructed with GMS (groundwater modeling system). By understanding the complicated hydrogeological conditions of the study area, a reasonable conceptual hydrogeological model is established, and the groundwater system is conceptualized into two layers: the shallow aquifer and the deep aquifer. After the model calibration and verification, the exploitation scheme of groundwater emergency in case of Yellow River cutoff is forecasted by the numerical model as well as the impact and feasibility of the emergency scheme is evaluated. The results show that the groundwater flow field under the emergency scheme II will not vary much in the overall. What's more, emergency exploitation of scheme II would have little impact on the groundwater level. Such problems as continuing drop of regional groundwater level and further expansion of depression cones would not be caused.