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河北省中东部区域分布为地下咸水分布区。自大量开采地下淡水以来,出现了地下咸水入侵地下淡水资源问题,第四系地下淡水水质呈不断变差趋势,对宝贵的地下淡水资源构成威胁,其主要原因是地下淡水资源的超量开采和成井工艺不严格。本文分析了地下咸水入侵地下淡水机制及影响现状。 相似文献
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开发利用咸水是缓解河北平原水资源危机的有效措施 总被引:3,自引:0,他引:3
河北平原是严重缺水地区,由于长期超采地下淡水,致使河北平原产生一系列的环境地质问题。河北平原在严重缺乏淡水的同时,也蕴藏着大量的地下咸水,如何合理开发利用地下咸水已成为缓解河北平原水资源危机的关键问题。作者通过对河北平原地下咸水分布、用途、开发利用现状的分析,提出了合理开发利用地下咸水的建议和措施。 相似文献
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地下淡水演变与水致疾病 总被引:9,自引:0,他引:9
地下淡水是地球水圈中罕见的自然资源和敏感脆弱的环境要素,地下淡水演变与人类生存息息相关。地下淡水最严重的演变是其中N-浓度的持续增高,浅层地下水成为大陆氮的贮存库。许多环境是水致疾病。水致疾病的分布受水文地球化学分带控制。在氧化带易发生碘缺乏病,在还原带易发生氟中毒病,在富有机质和H2S的潮湿地带易发生克山病。 相似文献
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苏宏图地区地下淡水形成机制 总被引:3,自引:3,他引:0
本文在前人工作的基础上,通过进一步的地质、水文地质调查,地球物理勘探,水文地质钻探,在阿拉善北部苏宏图寻找了可资应用的地下淡水,依据地貌、地层结构、地质构造和补径排特征分析了该区地下淡水的赋存和运移机制,对于同类干旱区地下水的勘查具有重要的意义。 相似文献
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华北平原深层淡水在开采条件下接受上覆咸水越流补给——以天津平原为例 总被引:1,自引:5,他引:1
王家兵 《水文地质工程地质》2002,29(6):35-37
分析物探测井曲线和地下水位动态发现,天津平原深层孔隙地下淡水在开采条件下接受上覆咸水的越流补给,而且咸水底界未大量向下位移。本文讨论了咸质含水组底部钙化粘土微观粘粒与水溶液的相互作用,提出了“滤盐层”的概念。 相似文献
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开发地下咸水,用于城市居民生活,可节省58%淡水资源.还可腾出地下库容,增大降雨入渗,淡化地下咸水,改善生态环境. 相似文献
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地下淡水资源管理研究的发展方向 总被引:1,自引:0,他引:1
地下淡水资源管理研究是整个淡水资源管理研究的一个组成部分。淡水资源已在我国和世界上许多地方成为危机问题,今后十年内这个危机将更加严峻。研究解决淡水资源科学管理和利用是自然系统和环境问题科学研究内容之一,是当代科学技术的一个前沿问题。当代淡水资源管理研究方向:一是加强基础研究,即地球表层各圈层相互作用下的淡水资源形成发展规律研究;二是研究建立淡水资源管理新途径,其中重点新思路是加强基础建设和能力建设;三是继续加强与淡水资源管理和合理利用的各具体科学技术问题的研究和实际应用。 相似文献
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Gilles Serge Odin 《Comptes Rendus Geoscience》2002,334(6):409-414
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414. 相似文献
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Muriel Rocher Stéphane Baize Stéphane Jaillet Edward Marc Cushing Yannick Lozach Francis Lemeille 《Comptes Rendus Geoscience》2003,335(8):701-708
Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ1 roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003). 相似文献
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正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level 相似文献
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正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7), 相似文献
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正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci- 相似文献
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正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli- 相似文献
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正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.) 相似文献
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正20142002 Wei Hualing(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China);Zhou Guohua Element Content and Mineral Compositions in Different Sizes of Soil in Tongling Area,Anhui Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(11),2013,p.1861 相似文献
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正20141768 An Shaopeng(Institute of Rock and Soil Mechannics,Chinese Academy of Sciences,Wuhan 430071,China);Wei Lide Experimental Study on Mechanical Behavior of Xigeda Formation Siltstone and Structure Interface(Journal of Engineering Geology,ISSN1004-9665,CN11-3249/P,21(5),2013,p.702-708,9illus.,1 table,16 refs.) 相似文献