[1]马婧,鲁春辉,吴吉春,等.一种可增加海岛地下淡水资源储量的方法研究[J].水文地质工程地质,2020,47(3):1-7.[doi:10.16030/j.cnki.issn.1000 -3665.201909048]
 MA Jing,LU Chunhui,WU Jichun,et al.A method for improving the fresh groundwater storage of oceanic islands[J].Hydrogeology & Engineering Geology,2020,47(3):1-7.[doi:10.16030/j.cnki.issn.1000 -3665.201909048]
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一种可增加海岛地下淡水资源储量的方法研究()
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《水文地质工程地质》[ISSN:1000-3665/CN:11-2202/P]

卷:
47卷
期数:
2020年3期
页码:
1-7
栏目:
水 文 地 质
出版日期:
2020-05-15

文章信息/Info

Title:
A method for improving the fresh groundwater storage of oceanic islands
文章编号:
1000 -3665(2020)03 -0001 -07
作者:
马婧12鲁春辉12吴吉春3罗剑4
1.河海大学水利水电学院,江苏 南京210098;2.河海大学水文水资源与水利工程科学国家重点实验室,江苏 南京210098;3.南京大学地球科学与工程学院,江苏 南京210023;4.美国佐治亚理工学院土木与环境工程系,佐治亚州 亚特兰大30331
Author(s):
MA Jing12 LU Chunhui12 WU Jichun3 LUO Jian4
1.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, Jiangsu210098, China;2.State Key Laboratory of Hydrology -Water Resources and Hydraulic Engineering, Hohai University, Nanjing, Jiangsu210098,China; 3.School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu210023,China;4.School of Civil and Environmental Engineering, Atlanta, Georgia30331,US
关键词:
海岛淡水透镜体渗透系数室内实验数值模拟
Keywords:
oceanic island fresh water lens low K zone laboratory experiments numerical simulations
分类号:
P641;X173
DOI:
10.16030/j.cnki.issn.1000 -3665.201909048
摘要:
淡水透镜体作为海岛上珍贵的地下淡水资源,对于满足居民生活用水与维护生态系统具有重要作用,增加海岛地下淡水资源储量可有效缓解海岛地区普遍存在的水资源短缺问题。本研究提出通过在海岛外部区域采用低渗透性介质材料增加海岛地下淡水资源储量的方法,采用室内物理模型实验与基于变密度地下水流溶质运移模型的数值模拟相结合的方法对提出方法的有效性进行了验证,并通过野外尺度的数学模型分析工程实施可能性。实验与数值模拟结果较吻合,表明该方法具有抵御海水入侵、增加海岛地下淡水资源储量的巨大潜力。通过基于野外尺度的数值模拟分析工程实施的可能性,发现对于降雨入渗补给强度为0.005 7 m/d、长度为200 m,孔隙度为0.3的狭长形均质海岛,地下淡水储量为66.5 m3/m,在海岛外部区域采用渗透系数为1 m/d、厚度为5 m的低渗透性介质材料后,淡水透镜体经过约8 a时间可再次达到稳态,地下淡水储量为343.8 m3/m,增加约4倍,工程实施具备一定可能性。本研究为缓解海岛地区缺水问题、实现淡水资源可持续利用提供了一种新方法。
Abstract:
There are many natural and artificial islands in our country, where the freshwater lens are precious freshwater resource and play an important role in supporting domestic water and the health of the groundwater -dependent ecosystems. Improving the groundwater storage of islands can effectively mitigate the widespread issues of water resources shortage of islands. This study presents some methods capable of improving oceanic fresh groundwater storage by using a low -permeability medium along the shore line. The effectiveness of the proposed method is validated through experimental and numerical studies. Field -scale numerical models are developed to analyze the possibility of the field application. The experimental fresh water -saltwater interface result is in good agreement with the numerical result, indicating that the proposed method has a great potential in preventing seawater intrusion and improving the freshwater storage. The numerical results show that for an imaginary island, the fresh groundwater storage can be increased by about 5 times after 8 years since the project is implemented. This study provides a new method for alleviating the issue of water resources shortage and realizing sustainable use of freshwater resources in island areas.

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相似文献/References:

[1]盛冲,许鹤华,张文涛.地貌变化对永兴岛淡水透镜体影响的数值模拟[J].水文地质工程地质,2018,45(06):7.[doi:10.16030/j.cnki.issn.1000-3665.2018.06.02]
 SHENG Chong,XU Hehua,ZHANG Wentao.Numerical simulation of the effect of geomorphologic changes on freshwater lens in the Yongxing Island[J].Hydrogeology & Engineering Geology,2018,45(3):7.[doi:10.16030/j.cnki.issn.1000-3665.2018.06.02]

备注/Memo

备注/Memo:
收稿日期: 2019 -09 -18; 修订日期: 2019 -10 -19
基金项目: 国家重点研发计划(2016YFC0402800);国家自然科学基金资助项目(51679067)
第一作者: 马婧(1994 -),女,硕士生,研究方向为海岸带地下水。E -mail:jma@hhu.edu.cn
通讯作者: 鲁春辉(1981 -),男,教授,博士生导师,主要从事海岸带地下水、地下水动力及溶质运移、地下多相流等研究。E -mail:clu@hhu.edu.cn
更新日期/Last Update: 2020-05-15