李家峡水电站坝址渗流水化学特征及评价  

Hydrochemical Feature Analysis and Assessment of Seepage Water at Lijiaxia Hydropower Station

作　　者：白羡斌 宋汉周[1] 

机构地区：[1]河海大学地球科学与工程学院,江苏南京210098

出　　处：《水电能源科学》2016年第4期35-39,共5页Water Resources and Power

基　　金：国家自然科学基金项目(41272265)

摘　　要：处于运行阶段的水电站坝址环境水质的形成及演变是自然和人为双重因素综合影响下的产物,其变化对工程的安全运行具有深远影响。以李家峡水电站为例,通过对渗漏水微观动态——水质特征的分析来反映坝址区地下水的补、排特征,利用系统聚类法对不同位置的监测水样进行划分并对各族群内的水质指标进行统计分析,以此评价库水的渗漏和环境水侵蚀问题。研究表明,坝址区存在较强的绕坝渗流,且多集中于大坝左岸坡,其强度与范围均大于右岸,坝址区地下水近年来仍以硫酸盐类侵蚀作用为主。The formation and evolvement of water quality at hydropower stations in running phases result from a combination of natural and man-made sources.It directly influences the safety of a project operation.Taking Lijiaxia Hydropower Station as an example,this paper analyzes the microcosmic status（quality）of percolating water to research the storing and draining features of underground water.Hierarchical cluster analysis method is used to evaluate the leakage status as well as the water corrosion situation by dividing and analyzing water samples taken from different sections.The research results show that the seepage exists around the dam,and water collects mostly on the left bank in intensity and range,underground water still suffers with sulfate erosion in recent years.

关 键 词：水文化学 坝址环境水 水化学分析 聚类分析 

分 类 号：X143[环境科学与工程—环境科学]