李家峡水电站坝址环境水化学特征与演变

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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Bibliographic details
Volume: 45
Main Author: 霍吉祥;李子阳;马福恒;宋汉周
Format: Journal Article
Language: Chinese
Place of publication: 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%河海大学地球科学与工程学院,江苏南京,210098 2018
published in: 水文地质工程地质 Vol. 45; no. 1; pp. 1 - 7
Data of publication: 2018
ISSN: 1000-3665
Alternate Title: Characteristics and evolution of environmental hydrochemistry around the dam-site of the Lijiaxia Hydropower Station
Classification Codes:
Bibliography: environmental water around a dam-site; hydroehemical diagrams; coefficient of variation
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 pre
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