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陈笛 《国土资源导刊(湖南)》2006,3(2):51-52
拟建的南太水库座落在碳酸盐岩岩溶发育区,库区南北向河是库区主干流河,呈狭窄条带,分布有顺河逆冲断层F1、推覆断层F2、正断层F3等,处于断层破碎带控制之中,形成渗漏网络、排泄网络,渗漏严重是拟建水库最大障碍。 相似文献
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弹性波法在水库坝基检测中的应用 总被引：1，自引：0，他引：1
许多水库大坝，特别是土、石坝，由于长年自然因素和人为破坏，普遍存在渗漏现象。为了维护水库的正常使用，对水库大坝的隐患进行检测，显得尤其重要。采用弹性波法中的垂直反射波法和瞬态面波法，利用坝基缺陷可能造成的反射波场和速度变化特征，给出了综合检测水库土、石坝基缺陷情况的方法技术。通过实践，验证了采用综合方法技术进行检测的有效性和实用性。 相似文献
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桂西岩溶地区的两个大型水库——大化、岩滩水库建成蓄水后，由于水位大幅度抬高，造成岩溶管道回水，使在其周边数县市境内岩溶地区的地下水位升高，在雨季洪水汇滥时造成岩溶浸没性内涝灾害。文中指出内涝灾害带来的严重后果，分析了其原因，提出了减灾、救灾的措施和今后防治内涝灾害的建议。 相似文献
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研究目的主要在于通过查明板文地下河的汇水区范围以及板文地下河中下游段的分布轨迹及水文地质特征，岩溶水的补给来源与动态特征等，了解东兰县纳巴片岩溶内涝与岩滩水库蓄水后所引起的板文地下河岩溶浸没之间的关系，提出解决岩溶内涝的途径与措施，为纳巴片岩溶内涝治理提供依据。研究表明，纳巴片的岩溶内涝，除了与特殊的岩溶水文地质条件和大量集中降雨密切有关外，岩滩水库蓄水后，使库水沿板文地下河倒灌，地下水位升高，是造成纳巴片岩溶浸没范围增大，延长浸没时间的主要原因 相似文献
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硫酸盐超标是辛安泉域岩溶水水质恶化的主要现象之一。识别岩溶水中硫酸盐的来源对于全面理解岩溶水水文地球化学过程,合理开发利用和保护岩溶水资源具有重要意义。通过野外水文地质调查、水样采集和水化学同位素测试,采用硫氧双同位素示踪技术,分析识别了辛安泉域岩溶水中硫酸盐的物质来源。研究结果表明,泉域内岩溶水中的硫酸盐主要来源于石膏溶解、地表水渗漏和矿坑水入渗,且以石膏溶解和地表水渗漏混合居多。研究成果为辛安泉域岩溶水资源的保护与合理开发利用提供了重要的环境和水文地质学依据。 相似文献
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许多水库大坝,特别是土、石坝,由于长年自然因素和人为破坏,普遍存在渗漏现象.为了维护水库的正常使用,对水库大坝的隐患进行检测,显得尤其重要.采用弹性波法中的垂直反射波法和瞬态面波法,利用坝基缺陷可能造成的反射波场和速度变化特征,给出了综合检测水库土、石坝基缺陷情况的方法技术.通过实践,验证了采用综合方法技术进行检测的有效性和实用性. 相似文献
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文章对我国历年来在因渗漏而出现病险的水库水文地质勘察工作进行系统的总结和归纳,在此基础上提出渗漏病险水库的水文地质勘察应包含的内容和需采取的手段,为渗漏病险水库的水文地质勘察提供可操作性的建议。 相似文献
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红水河岩滩水电站位于广西红水河中游的巴马、都安两县交界的岩滩河段上,属一项大型工程,是红水河上目前正在施工的第三个梯级电站。坝址座落在辉绿岩上,而水库区则分布约占区域面积60％的碳酸盐岩,因此,水电站的建设必须考虑岩溶渗漏的工程地质问题。 在初步设计之初,分析前人工作成果,经过勘测研究,结合卫片、航片解译,首先确定了 相似文献
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文瀛湖水库受周边地下水大规模开采影响,水位逐年下降,加之库区、堤基和堤身的渗漏,致使水库干枯。笔者结合库区及周边已有资料,阐述分析文瀛湖水库渗漏原因对库区的防渗治理提供地质依据。 相似文献
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Based on the hydrographic data in austral summer during the 22nd Antarctic Expedition of China(2005/2006),some features can be found about the northern margin of Emery ice shelf as follows.The heat content in the surface layer(0-50 m) at the eastern end and the western end of the ice-shelf margin is much higher than that at the middle.The upper mixing-layer depth and the seasonal thermocline depth at the middle of the ice-shelf northern margin are much shallower than those at the both ends.However there is much less difference between the middle and the ends in the bottom layer.The remote sensing photos show that the inhomogeneity in the surface-layer water is closely related to the spatial distribution of the floes and polynia in the area. 相似文献
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Phylogenetic analysis based on 16S rDNA of 8 strains of cultivable bacteria isolated from Arctic sea-ice was studied.The results showed that strain BJ1 belonged to genus Planococcus,which was a genus of low mole percent G C gram-positive bacteria;strain BJ6 belonged to genus Burkholderia of β-proteobacteria and the rest 6 strain all belonged to γ-proteobacteria,of which strain BJ8 was a species of Pseudoalteromonas,strain BJ2-BJ5 and BJ7 were members of genus Psychrobacter.Phylogenetic analysis also indicated that bacteria of genus Psychrobacter of the isolates formed a relatively independent phylogenetic cluster in comparison with other bacteria belonged to genus Psychrobacter. 相似文献
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《极地研究(英文版)》2014,(3)
正1 Aims and Scope Advances in Polar Science(APS)is an international,peer-reviewed journal jointly sponsored by the Polar Research Institute of China and the Chinese Arctic and Antarctic Administration.APS is a comprchensive academic journal dedicated to presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research.Its primary purpose is to publish achievements in fundamental research,applied 相似文献
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《山地科学学报》2014,(4):I0004-I0009
<正>AIMS AND SCOPE(Editorial Policy)The Journal of Mountain Science(JMS)is devoted to mountains and their surrounding lowlands-ecoregions of particular global importance,with a particular emphasis on the important highlands/mountains in the world,such as the Tibetan Plateau,the Himalayas,the Alps,the Andes,the Rockies and many other mountain ranges of our planet. 相似文献
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《山地科学学报》2014,(4)
<正>The Journal of Mountain Science(JMS),founded in2004,is an international English-language journal on mountain sciences.JMS is supervised by the Chinese Academy of Sciences(CAS),sponsored by the Chengdu Institute of Mountain Hazards and Environment,CAS,published by Science Press China,and distributed by Springer exclusively throughout the world(excluding Mainland China).The JMS is published bimonthly,fulltexted in SpringerLink and CNKI,indexed/abstracted by 相似文献
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References： 《极地研究(英文版)》2007,18(1):73-83
Using the NCEP/NCAR reanalysis monthly 500 hPa height data on a 2.5 latitude-longitude grid and 1°×1° sea ice data,the polar vortex area,intensity index and arctic sea ice area index are calculated respectively,and the meridional distribution,period variation and the abrupts in the long range trend are analyzed to study their relationship.The results show that the meridional distribution of sea ice and polar vortex h-ave distinctive difference,the relative positions of them are different in the eastern and western hemispheres,and exept they have periods of 4 months,quasi half year,quasi year,4-5 years and 10 years commonly,and each of them has its own respective variation as well.The sea ice area is decreasing apparently since 1980's,so is the polar vortex area,but their abrupt changge time are different totally.The area of sea ice and polar vortex has prominent positive correlation,but the relationship of sea ice intensity,polar vortex intensity,polar vortex area is complicated. 相似文献
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《中国海洋大学学报(英文版)》2014,(3):I0001-I0001
<正>The Journal of Ocean University of China(Oceanic and Coastal Sea Research)is a comprehensive academic quarterly sponsored by the Ocean University of China,published one volume per year.This journal is devoted to the publication of the theoretical and applied research 相似文献