古田溪四级大坝坝基扬压水位异常成因分析
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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.
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.
引文
[1]李珍照.大坝安全监测.北京:中国电力出版社,1997.
[2]李富强,王振宇.大坝监测数据分析中信息扩散估计的应用.水力发电学报,2006,25(4):122-125.
[3]吴雄伟,程伟平.基于奇异值分解算法的大坝监测数据回归模型.水电自动化与大坝监测,2007,31(3):53-55.
[4]罗起,夏世法,陈志年.古田溪四级大坝坝基扬压力观测问题.中国农村水利水电,2003,21(11):64-66.
[5]郑东健,卢秋生.基于扬压力实测资料的古田溪四级大坝稳定分析.水电自动化与大坝监测,2003,27(6):56-58.
[6]张培仁,刘成龙,王志敏,等.华北地区部分井孔稀有气体异常研究.地震地质,2002,24(2):215-221.
[2]李富强,王振宇.大坝监测数据分析中信息扩散估计的应用.水力发电学报,2006,25(4):122-125.
[3]吴雄伟,程伟平.基于奇异值分解算法的大坝监测数据回归模型.水电自动化与大坝监测,2007,31(3):53-55.
[4]罗起,夏世法,陈志年.古田溪四级大坝坝基扬压力观测问题.中国农村水利水电,2003,21(11):64-66.
[5]郑东健,卢秋生.基于扬压力实测资料的古田溪四级大坝稳定分析.水电自动化与大坝监测,2003,27(6):56-58.
[6]张培仁,刘成龙,王志敏,等.华北地区部分井孔稀有气体异常研究.地震地质,2002,24(2):215-221.
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