古田溪四级大坝坝基扬压水位异常成因分析  

Cause Analysis of Abnormal Uplift Water Level of Gutianxi Dam Ⅳ

作　　者：何金平[1,2] 施玉群[1,2] 卢秋生 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北省武汉市430072 [2]武汉大学水利水电学院,湖北省武汉市430072 [3]华电福建发电有限公司古田溪水力发电厂,福建省古田市352258

出　　处：《水电自动化与大坝监测》2010年第2期45-48,共4页HYDROPOWER AUTOMATION AND DAM MONITORING

摘　　要：古田溪四级大坝坝基渗1号测压孔扬压水位存在着变化过程骤升和骤降、部分时期扬压水位明显偏高等异常现象,通过建立渗1号测压孔扬压水位统计模型,分析了扬压水位与上游水位之间的相关关系以及6号坝段坝基扬压力横向分布状态,研究了渗1号测压孔扬压水位异常的可能成因,评价了6号坝段坝基防渗帷幕的工作状态。There exist some abnormal phenomena at 1 # pressure tap of the dam base of Gutianxi Dam IV, because the changing process of the uplift water level jumps suddenly and falls sharply and sometimes the uplift water level is obviously on the high side. By establishing the statistical model of the uplift water level at 1 # pressure tap, this paper analyzes the correlation between the uplift water level and the upstream water level, as well as the horizontal distribution status of the uplift pressure in the foundation of 6# dam block. The possible causes of the abnormal uplift water level at 1 # pressure tap are also studied, and the working condition of the anti-seepage curtain in the foundation of 6 # dam block is evaluated.

关 键 词：大坝 坝基 异常 扬压力监测 统计模型 

分 类 号：TV223.4[水利工程—水工结构工程]