Groundwater flow and contamination studies
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Abstract
Abstract
The sustainable exploitation of a riverside well field is critical for securing regional water supply. Optimizing its layout is a complex, multi-objective engineering challenge aimed at balancing yield, stability, and quality. This study adopted an analytical-numerical workflow to optimize the layout of the riverside well field of Luan River in Chengde City. The analysis first determined an optimal basic scenario with a river-well distance of 25 m and an inter-well spacing of 150 m, yielding a maximum allowable extraction capacity of 5.31 × 10 4 m 3 /d. Subsequently, three detailed engineering scenarios incorporating diverse intake structures and interventions were designed and compared. The results demonstrate that Scenario 3 represents the optimal layout, which includes 14 extraction wells, 2 infiltration galleries, 1 radial collector well, and riverbed modification. This scenario not only meets the target extraction rate of 8 × 10 4 m 3 /d, but also performs well under the particularly dry and extremely dry year/month conditions defined from the historical runoff record of the Luan River. Furthermore, backward particle-tracking analysis indicates that Scenario 3 reduces the risk of direct groundwater capture from the nearby land-based potential pollution-source areas. Consequently, Scenario 3 represents the optimal choice based on yield, reliability, and risk. In conclusion, this study demonstrates the effectiveness of the analytical-numerical workflow for optimizing riverside well field layouts. The findings provide decision support for the Luan River project and offer a practical reference for similar systems under comparable hydrogeological conditions.
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@article{Li2026analytical,
title = {An analytical-numerical method for optimizing the extraction layout of riverside well field: a case study of the Luan River, China},
author = {Xiaoyuan Li and Wenzhong Wang and Shenghua Song},
journal = {Environmental Earth Sciences},
year = {2026},
doi = {10.1007/s12665-026-13074-1},
url = {https://doi.org/10.1007/s12665-026-13074-1}
}FAQ
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