龙开口水电站大坝渗流量监测分区改造  

Reconstruction of Seepage Monitoring Zoning for Longkaikou hydropower Station Dam

作　　者：杨光 李加裕 薄明辉 贾思旭 YANG Guang;LI Jiayu;BO Minghui;JIA Sixu(HuanengLongkaikou Hydropower Co.,Ltd,Dali 671505,China)

机构地区：[1]华能龙开口水电有限公司,云南大理671505

出　　处：《云南水力发电》2025年第3期60-64,共5页Yunnan Water Power

摘　　要：渗流量监测是碾压混凝土重力坝安全监测项目的关键内容之一,受设计、施工等因素影响,龙开口水电站坝体、坝基的渗流量观测一直未实现分区测量。对比分析历年人工比测数据,发现部分测点的自动化测值与人工测值相差较大,对及时掌握坝体、坝基渗流量变化情况及变化规律造成了一定的影响。综合现场检查情况、历史数据评估及现场测试成果,依据相应规范对大坝渗流量监测进行分区改造,修正相应测点的自动化计算公式。大坝渗流量监测分区改造及自动化计算公式修正后,实现了龙开口水电站坝体、坝基的渗流量观测的分区测量,大幅减小了自动化测值与人工测值的差值,可为掌握大坝渗流的分布区域、强度、来源、流向及其变化规律等情况提供重要依据,进而判断坝体、坝基有无比较严重的集中渗流,保障大坝安全稳定运行。相关的改造成果对大坝的稳定运行具有重要意义,同时可为各电站类似问题提供参考依据。The monitoring of seepage flow is one of the key contents of the safety monitoring project for roller compacted concrete gravity dams.Due to factors such as design and construction,the observation of seepage flow in the dam body and foundation of Longkaikou Hydropower Station has not been achieved through zoning measurement.By comparing and analyzing the manual comparison data over the years,it was found that there were significant differences between the automated and manual measurements of some measuring points,which had a certain impact on timely understanding of the changes and patterns of seepage flow in the dam body and foundation.Based on the comprehensive on-site inspection,historical data evaluation,and on-site testing results,the seepage monitoring of the dam is partitioned and modified according to the corresponding specifications,and the automatic calculation formula of the corresponding measuring points is corrected.After the transformation of the dam seepage monitoring zoning and the correction of the automated calculation formula,the zoning measurement of seepage observation for the dam body and foundation of Longkaikou Hydropower Station has been achieved,greatly reducing the difference between automated and manual measurement values.This can provide important basis for understanding the distribution area,intensity,source,flow direction,and variation rules of dam seepage,and further determine whether there is severe concentrated seepage in the dam body and foundation,ensuring the safe and stable operation of the dam.The relevant transformation results are of great significance for the stable operation of the dam,and can also provide reference for similar problems in various power stations.

关 键 词：龙开口水电站 渗流量监测 分区改造 自动化测值 人工测值 

分 类 号：TV698.233[水利工程—水利水电工程]