基于渗流动态的富春江大坝基础运行性态分析评价  

Analysis and Evaluation of Fuchunjiang Dam Foundation Operating Performance Based on Seepage Dynamic

作　　者：罗黎[1] 王健平 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 [2]富春江水力发电厂,浙江桐庐311504

出　　处：《水电能源科学》2016年第2期60-64,共5页Water Resources and Power

基　　金：国家自然科学基金项目(41272265);国网新源水电有限公司科技项目(5256001350BZ)

摘　　要：渗流动态往往能反映大坝基础运行性态的正常与否。以富春江大坝为例,统计分析了区内渗流宏观及微观动态监测资料,进而评价了坝基的运行性态。结果表明,近年来坝基扬压力总体上保持稳定,排水量无明显变化趋势,地下水水质向碱性化和矿化的趋势演变,渗水析出物组成亦无明显异常;但少数坝段(C5、C6、G4、P3、P4坝段)具有较大排水量,且渗漏水的pH值、温度等指标相对接近其补给源。由此认为,大坝运行性态总体"健康",坝基帷幕体的防渗效果仍显著;但存在局部的防渗缺陷,而处于"亚健康"状态,应加强监测。In this paper,the operating performance of dam foundation in a case is analyzed from the macro-micro monitoring statistical data in Fuchunjiang dam.The following five aspects can be identified：Dam foundation uplift pressure is stable on the whole;The flow-rate from drainage hole was no obvious trend;Groundwater quality showed a trend of alkalization and mineralization;Elutes had no obvious exception;A few dam section（C5,C6,G4,P3,P4 dam section）had a larger displacement,and its data,which include groundwater＇s pH and temperature,was close to its source.As a conclusion,it could be drawn from the above that the dam running state in general belongs to the＂health＂,and the curtain＇s seepage prevention effect is still significant.But a few dam sections have defects of seepage prevention,and are in a state of＂sub-health＂.These sub-healthy sections need to be strengthened monitoring.

关 键 词：大坝基础 渗流 宏观动态 微观动态 综合评价 

分 类 号：TV698[水利工程—水利水电工程]