Monitoring Model And System Study Of The Seepage Of Xiluodu Hydropower Station

In recent years,with the rapid development of the hydroelectricity,the construction investment of hydraulic engineering has become more and more.The project scale is huge,and the construction of The hydraulic structures is moving in the direction of "high,big".The technical difficulties and security issues faced by hydraulic engineering are becoming more and more prominent.The dam safety monitoring as an important means to ensure the safe operation of the dam has a great importance.In this paper,through the data analysis of the seepage of dam foundation,understanding the Basic situation and development trend of dam foundation osmotic pressure to provide the basis for the safe operation of the dam.The main works include:(1)Through the analysis of the monitoring data of the riverbed dam section and the bank slope section of Xiluodu arch dam and calculating the seepage coefficient after the curtain,the monitoring data analysis results show that the dam foundation permeability coefficient is smaller than the Xiluodu arch dam design value,The anti-seepage effect of the curtain of Xiluodu Hydropower Station is good.(2)According to the cause analysis,the dam foundation is divided into water level component,temperature component and aging component.The stepwise regression and partial least squares regression method are used to establish the dam foundation pressure monitoring model.The statistical model analysis results both show that the fitting effect of the monitoring model is good,and it is in line with the general understanding of the law of dam foundation pressure change.The monitoring model shows that the water level component is the main component,and as the dam enters the operating period from the initial storage period,the aging component gradually decreases.(3)The data management and analysis system of Xiluodu Hydropower Station(referred to as safety monitoring system)includs the main use of data management,data analysis,system management.In this paper,the description of the monitoring system is introduced in detail,and the statistical model of dam foundation pressure is embedded in the safety monitoring system,which is convenient for real-time monitoring and forecasting the trend of dam foundation seepage.