| 李家峡水电站坝址环境水化学特征与演变 |
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| 引用本文： | 霍吉祥,李子阳,马福恒,宋汉周.李家峡水电站坝址环境水化学特征与演变[J].水文地质工程地质,2018,0(1):1-7. |
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| 作者姓名： | 霍吉祥 李子阳 马福恒 宋汉周 |
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| 作者单位： | 1 南京水利科学研究院/水文水资源与水利工程科学国家重点实验室，江苏 南京210029；2 河海大学地球科学与工程学院，江苏 南京210098 |
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| 基金项目： | 国家自然科学基金项目(51139001；51409167；51609150）；中国博士后科学基金（2016M590477）；水利部公益性行业科研专项（201501033；201501036）；河南省水利科技攻关计划项目（GG201546）；中央级公益性科研院所基本科研业务费专项资金项目(Y716017) |
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| 摘 要： | 坝址环境水质及其时空变化隐含了丰富的信息，可以揭示水、岩、帷幕间的相互作用情况以及渗流条件的改变。以李家峡水电站为例，对坝址不同部位渗流水进行采样检测的基础上，综合运用水化学图示、统计分析等方法，研究了坝址环境水质空间分布特征，并与之前的检测结果对比分析水质变化趋势。研究显示，廊道内渗水总体上呈现出“高矿化”的特征，且坝基部位较两岸坝肩尤甚，表明两岸部位帷幕前后水力联系相对活跃；从时间演变看，左岸及坝基廊道部位的水质与此前检测分布较为一致，表明对应部位防渗性能变化稳定；右岸水样两次检测情况变化较大，表明右岸廊道部分部位渗流条件变化较大。
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| 关 键 词： | 坝址环境水 水化学图示法 变异系数 相关性分析 主成分分析 李家峡水电站 |
| 收稿时间： | 2017-05-10 |
| 修稿时间： | 2017-07-14 |
Characteristics and evolution of environmental hydrochemistry around the dam-site of the Lijiaxia Hydropower Station |
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| HUO Jixiang,LI Ziyang,MA Fuheng,SONG Hanzhou.Characteristics and evolution of environmental hydrochemistry around the dam-site of the Lijiaxia Hydropower Station[J].Hydrogeology and Engineering Geology,2018,0(1):1-7. |
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| Authors: | HUO Jixiang LI Ziyang MA Fuheng SONG Hanzhou |
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| Institution: | 1.Nanjing Hydraulic Research Institute, State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing, Jiangsu210029, China; 2.College of Earth Sciences and Engineering, Hohai University, Nanjing, Jiangsu210098, China |
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| Abstract: | Water quality and its spatial-temporal variation around a dam-site imply abundant information, which may reveal the interaction among water, rock and curtain and the change in seepage conditions. The Lijiaxia Hydropower Station is taken as an example, and the seepage water samples from different parts of the dam-site are tested. The spatial distribution characteristics are analyzed by using hydrochemical diagrams and conducting statistical analyses. The detection results are compared with those of the corresponding parts conducted before. The results show that the seepage water in the corridor is generally of high salinity, especially in the dam foundation. It suggests that the hydraulic connection in both sides of the dam abutment is more active than the one in the dam foundation. From the point of view of time evolution, the detection results in the corridors of the left bank and dam foundation are consistent with the previous ones, indicating that the corresponding parts of the anti-seepage performance show overall change. While the change in water samples on the right bank corridor is larger, which indicate that the hydraulic connection between some locations in the right bank corridor and the reservoir water before the curtain was more active than other places. |
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