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本文根据华北平原地质和水文地质条件,对可调蓄地层、调蓄空间、调蓄水源以及调蓄有利地带进行了系统分析。在此基础上,计算出华北平原地下水最大可调蓄空间为1478.05×108m3,现状地下水位埋深条件下的可调蓄空间为326.29×108m3。制定了地下水调蓄有利地带的选取原则,华北平原地下水调蓄的最好地带是山前冲洪积扇和中东部平原的古河道带。本文在山前冲积扇地带选择了7处地下水调蓄有利地带进行专门研究,提出了各调蓄有利地带调蓄空间、调蓄水源以及调蓄方式。7处调蓄有利地带利用当地水源调蓄方案实施后,地下水可增加补给量为16.68×108m3/d。运用地下水数值模拟方法对3处有利地带的调蓄效果进行了模拟分析,结果表明地下水调蓄方案实施后对地下水供水环境的恢复效果十分明显。
Based on the geologic and hydrogeological conditions in the North China Plain, this paper systematically analyzes the adjustable stratum, the reservoir space, the reservoir water source and the favorable land for regulation and storage. On this basis, it is calculated that the maximum adjustable storage space of groundwater in North China Plain is 1478.05 × 108m3, and the adjustable storage space under current conditions of groundwater depth is 326.29 × 108m3. The principle of selection of favorable groundwater storage and storage was formulated. The best groundwater storage and storage in the North China Plain is the alluvial fan in front of the mountain and the ancient river channel in the middle eastern plain. In this paper, seven favorable areas for groundwater regulation and control are selected in the alluvial fan belt before the piedmont for special study, and the regulation and storage space for regulation and storage, water regulation and storage and regulation methods are put forward. After the implementation of the regulation and storage of the favorable land in 7 places using the local water source regulation and storage program, the recharge of groundwater can be increased to 16.68 × 108m3 / d. The groundwater simulation method is used to simulate and analyze the regulation and storage of three favorable zones. The results show that the recovery effect of the groundwater supply environment after the implementation of the groundwater regulation scheme is very obvious.