Investigation of Stability in earth dam using Ansys, and Geo –Studio Software

Abstract

Analysis of seepage and stability is considered as an important case in designing which today, with<br />advanced numeric software acceptable results will be obtained before and after Construction. In the<br />present study, the behavior of earth dam against effective factors was investigated by software<br />Ansys12. The studied dam is Maroun soil dam, which is located in 19Km north of Behbehan and<br />constructed on Maroun River. This dam is soil- gravely dam. It was tried in this research that stability<br />of dam be evaluated by finite element method and Ansys software, and then compare by software<br />results like Geo-studio. At first Following, the stability of dam slope was considered and the behavior<br />of dam was stimulated by several methods and there were relatively same results for the amount of<br />safety factor and unstable surface. Safety factor was 4.21 for upstream by bishop method in Ansys and<br />4.71 in Geo-studio and for downstream 1.5, 1.8, respectively. Finally, the maximum and minimum<br />amount of tension was determined by analyzing tension, strain and movement and the areas with<br />different sediments and possible cracking and subside regions were determined. In this part, both<br />softwares provided relatively same results and the maximum amount of movement in dam estimated<br />5-6 meters. However, both softwares are best ones in analyzing and finite method and completely<br />correct introducing of current conditions could have acceptable analyses.