The Numerical Simulation Study on Aquifer Recharge in the Groundwater Funnel Area in Linqing City, Shandong Province
>Well-canal combined irrigation mode is adopted in the lower reaches of irrigated area in the Yellow River flood plain. The diversion time and volume are limited by the upper reaches. In addition, the shallow groundwater overdraft is serious in this area. In this study, based on the engineering technology, how to increase the recharge volume of groundwater in the limited diversion time to ease the long-term downward trend of water table was discussed. The numerical simulation was carried out to the open canal-underground perforated pipe-shaft system which was implemented in the groundwater funnel area in Linqing city based on Hydrus-2D model in two scenarios: the open canal and underground perforated pipe respectively; the diversion time was 7 days in the actual engineering operation and numerical simulation. The simulation results show that: during the whole simulation period, the level which is under the open canal rose 13 m in scenario one; the level which is under the perforated pipe rose 8.5 m and the level between two pipes rose 2.3 m in scenario two. In the meantime, the perforated pipe can efficiently increase the recharge volume of underground water. To the end of the simulation, the recharge volume of the open canal was 18,026 m3, and that of three perforated pipes was 56,224 m3 which was 75.7% of the total recharge volume. The result was basically accorded with the actual monitoring value. Therefore the system plays a good role in recharging underground water in the groundwater funnel area.
文章引用: 黄 强 , 孙广浩 , 李锦超 , 王维平 (2015) 临清市地下水漏斗区含水层补给的数值模拟研究。 水资源研究， 4， 567-575. doi: 10.12677/JWRR.2015.46071
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