Seepage Analysis of Ghazi Barotha Hydro Power proj

Abstract

Seepage analysis is performed at design stage of a project to determine seepage losses and hydraulic gradients at various points in the dam body. V notch flumes are installed to monitor the actual discharge through the foundation and dam body. The actual discharge is compared with the theoretical discharge. If the actual discharge is less than the acceptable limits than the operator is satisfied. However, if the actual discharge exceeds the discharge by a substantial margin than it is concluded that the embankment is not performing its designed function and the entire design is critically reviewed and additional measures are taken to ensure that detrimental hydraulic gradient are with in safe limits. In the study reported here is a comparison between design discharge and the actual discharge measured. The design discharge was obtained from the consultants reports and a detailed seepage analysis was performed by our syndicate using computer software, SEEP/W. Actual discharge data was obtained from WAPDA. The work done in this project will Insha Allah be a very effective and useful tool for the students who want to gain knowledge regarding Seepage Analysis and how it is carried out