Study the Monitoring and Numerical Analyses of Rockfill Dam; Case Study of Marvak Dam in Lorestan, Iran

In this study, the behavior of Marvak Rockfill Dam with clay core by 68 m height by using numerical modeling by GeoStudio software and monitoring results have been evaluated. In the first step of this study, Marvak dam has been numerically modeled by GeoStudio software and vertical stresses in the core and maximum settlement during construction have been determined. At the next step, results have been compared with monitoring results in the various parts of the dam. Comparison of the numerical and monitoring results depicted that at the elevation 1590 m, 31 m lower than the crest, the maximum settlement in the instrument INC 10 in which located 4 m upstream of dam body is 810 mm and numerical results is equal to 800 mm. Maximum settlement in the long term and arching occurs in the middle of the dam approximately. The value of the arching ratio is between 0.73-1 which indicates that Marvak Dam is in stable condition.