| 怀柔应急备用地下水源地减采热备影响分析 |
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| 引用本文： | 李阳,张景华,董佩,陈鲁.怀柔应急备用地下水源地减采热备影响分析[J].城市地质,2016(4):66-70. |
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| 作者姓名： | 李阳 张景华 董佩 陈鲁 |
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| 作者单位： | 1. 北京市地质工程勘察院,北京,100048;2. 北京市水文地质工程地质大队,北京,100195;3. 环境保护部核与辐射安全中心,北京,100082 |
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| 基金项目： | 北京市京密引水管理处怀柔应急备用地下水源地地下水动态监测。 |
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| 摘 要： | 综合怀柔应急水源地多年气象及地下水动态监测资料,重点分析了2015年9月份水源地减采热备前后地下水水位、水质、水源井动水位等监测资料,评价了应急水源地热备涵养对水源地及周边地下水系统的影响。结果表明,水源地运行至2015年8月31日,中心区地下水位已累计下降31.34m。水源地减采热备后,应急水源地及周边地下水位恢复明显,相对于2015年8月31日至2015年12月底,区域地下水位平均上升了1.69m,中心区升幅最大,南部地区升幅大于北部地区。水源浅井动水位平均上升了8.07m,水源深井动水位平均上升了18.34m。减采初期,深层承压含水层水质有所恶化,接近于浅层承压水。随着时间的延续,地下水位的升高,水质恢复到减采前水平。怀柔应急水源地作为首都最大的应急备用水源地,在南水北调来水后的新水情下进行热备涵养,对于保障首都供水安全有着重要意义。
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| 关 键 词： | 怀柔应急水源地 减采 热备 动态监测 地下水涵养 |
Analysis on the Inlfuence to reduce exploitation of the Huairou Emergency Wellhead |
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| LI Yang,ZHANG Jinghua,DONG Pei,CHEN Lu.Analysis on the Inlfuence to reduce exploitation of the Huairou Emergency Wellhead[J].City Geology,2016(4):66-70. |
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| Authors: | LI Yang ZHANG Jinghua DONG Pei CHEN Lu |
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| Abstract: | On the basis of themeteorological and groundwater monitoring data for many years in Huairou emergency wellhead, this paper analyzes the groundwater level, water quality and dynamic water level before and after the Huairou emergency wellhead reducing exploitation in September 2015. At the same time, the evaluation of emergency wellhead conservation effects on water source and the surrounding groundwater system has also been carried out. The results show that the groundwater level in the central area of Huairou emergency wellhead has declined to 31.34m till August 31, 2015. After the water source is reduced, the water level in the emergency water source area and the surrounding area is obviously recovered. Compared to August 31, 2015, average of region ground water level has increased 1.69m on December 31, 2015.The largest increase occurred in the central area and the southern region’s increase is larger than that of the northern region. The average dynamic water level of shallow wells is increased by 8.07m and the average dynamic water level of deep wells increased by 18.34m. In the early stage of the reduction, the water quality of the deep conifned aquifer is deteriorated, which is close to the shallow conifned water. As the time goes by, the ground water level is increased and the water quality is restored to the level before the reduction. As the capital's largest emergency wellhead , Huairou emergency wellhead for conservation in the case of new water resources of South-to-North Water Diversion, has important signiifcance to ensure the safety of water supply in the capital. |
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| Keywords: | Huairou emergency wellhead Reducing exploit Standby application Dynamic monitoring Groundwater conservation |
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