Application of Numerical Simulation and Analytical Methods to Estimate Hydraulic Parameters of Foundation Pit in Hydropower Stations
Chen Xiaolian
Wen Zhang
Hu Jinshan
Min Yongzhang
Liang Xing
Sun Ronglin
Li Runchao
Abstract：A hydropower station located on Dadu River of Sichuan Province is under construction now.The construction of its impervi-ous walls have been completed basically,however,the discharge of water is still large in the foundation pit of hydropower station.In order to evaluate the performance of impervious walls,two pumping tests was conducted between the two impervious walls.According to the boundary conditions of this area,the comprehensive well function was used to obtain the hydrogeological parameters.On the ba-sis,numerical model is established by using GMS (groundwater modeling system)software to obtain the aquifer parameters after iden-tifying and verifying the model.The results indicate that the hydraulic conductivity of aquifer is between 19.13-32.24 m/d by analytical method,and 26.00 m/d by numerical simulation.In addition,the hydraulic conductivity of impervious walls is very small (0.01 -0.02 m/d),it is found that the performance of impervious walls is good.
Keywords：foundation pit of hydropower stationimpervious wallanalytical methodnumerical simulationgroundwaterhydrogeology
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 701-710 )