里底水电站河床式坝基扬压力监测分析  

Monitoring and Analysis of Uplift Pressure of Riverbed Dam Foundation in Lidi Hydropower Station

作　　者：刘千驹[1] 张云广 周期颐 齐道怀 LIU Qian-ju;ZHANG Yun-guang;ZHOU Qi-yi;QI Dao-huai(Power China Northwest Engineering Corporation Limited,Xian710065,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,陕西西安710065

出　　处：《云南水力发电》2021年第5期6-10,共5页Yunnan Water Power

摘　　要：结合里底水电站河床式坝基扬压力监测资料成果,对坝基扬压力分布进行纵向横向分析,并建立坝基扬压力统计回归模型,对河床式电站坝基扬压力进行全面系统的分析。主帷幕灌浆廊道内大部分测压管与上游水位有较好的相关性;坝基扬压力横纵向分布整体稳定,满足设计要求;扬压力的主要影响因素是库水位,且具有滞后性,温度和时效也对扬压力有影响。Based on the monitoring data of uplift pressure of riverbed dam foundation in Lidi Hydropower Station,the distribution of uplift pressure of dam foundation is analyzed longitudinally and transversely in this paper.Statistical regression model of uplift pressure of dam foundation is established and comprehensive and systematic analysis of uplift pressure of dam foundation of riverbed power station is carried out.Most of pressure measuring pipes in the main curtain grouting gallery have good correlation with the upstream water level.The transverse and longitudinal distribution of uplift pressure of dam foundation is stable as a whole and meets the design requirements.The main influencing factor of uplift pressure is reservoir water level with hysteresis.Temperature and aging also have influence on uplift pressure.

关 键 词：河床式水电站 扬压力监测 回归模型 坝基扬压力 

分 类 号：TV698.12[水利工程—水利水电工程]