Drawdown changes affected by flow rate and location of pumping wells near a river

International Conference on Water Resource and Environment 2016

地球科学;生态环境科学

Chen, S.N.^1 ; Shu, L.C.^1

State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing

210098, China^1

关键词: Discharge zone;    Flow rate conditions;    Groundwater exploitation;    Groundwater exploration;    Hydrogeological;    Pumping well;    Transition zones;    Well location;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/39/1/012013/pdf
DOI  :  10.1088/1755-1315/39/1/012013

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Riverside groundwater exploitation is one of the main means of utilizing groundwater resources. This paper describes the impact of drawdown conditions with changes in the river flow and pumping well locations, and analyzes the interaction between the groundwater and surface water. Based on long-term hydrological gauging data, abundant hydrogeological test data, and the numerical simulation results for a typical well field of the Qinbei Power Plant, this paper presents three different cases of pumping well locations and four different cases of river flow rates. Finally, the abovementioned cases are integrated into 12 extraction groups and the drawdown conditions are calculated for each group. The results show that, for a given set of flow rate conditions, a location set in a recharge zone exhibited the maximum drawdown, while a location in a transition zone had the second-largest drawdown, and a location in a discharge zone had the minimum drawdown. In addition, assuming the same locations for the pumping wells, the drawdown change from small to large corresponded to 100%, 75%, 50%, and 25% of the original flow. This paper provides a foundation for future study of the calculation of riverside groundwater exploration with changes in the flow rate and well locations.