ASSESSMENT OF STRESS DISTRIBUTION IN DARAB'S ROODBAL EMBANKMEND DAM USING COMMERCIAL CODE FLAC

Yashar Ostovar KASHKOOLI, Mohammad Mehdi JABBARI
1.439 511

Abstract


Abstract. Evaluation of performance and behavior of a dam is viable by monitoring of dam using instrumentation. Stress and deformation analysis during end of construction is one of the important parameters in analysis, design, and stability of an embankment dam. In this study, a comparison between various models in stress and deformation analysis of Roodbal dam during end of construction using finite element method in FLAC software was established. The results showed that Mohr-Coulomb model has good accuracy in analysis of vertical settlement of dam core. It was also known that vertical displacement of Darab's Roodbal dam is slow ascending which is slower in upstream than downstream shell. The overall stress in dam body is also slow ascending that shifted from lower level near the core to middle lower level of core during first impoundment through the end of first 10-year utilization period. The analysis over whole body showed that after completion of construction and then initial impoundment of dam pore water pressure in the core of dam is 370 kPa which was the same in middle level of core. According to analysis conducted over whole body of dam, displacement reached 96 cm after completion of construction which was also the same for one-third middle level of core.


Full Text:

PDF


References


Pagano, L. Sica, S. and Desideri, A. (2006), "Representativeness of measurments in the interpretation of earth dam behavior" Canadian Geotechnical Journal .Vol 43, pp. 87-99.

Zolfaghari, M. (2004), "Monitoring of Gavoshan dam using instrumentation data during construction and prediction of behavior at the end of construction period", Msc. thesis, university of shahid chamran of Ahvaz.

Clough, R.W. and Woodward, R.J. (1967), "Analysis of embankment stresses and deformation" Journal of the Soil Mechanics and Foundation Division, Vol.93 (SM4), pp. 529-549.

Ziayi, M. (2013), "Variation of pore water pressure in core of embankment dams during utilization", the 7th National Congress on Civil Engineering, Zahedan, Iran.

Rattue, D.A. Hammamji, Y. Tournier, J.P. (2000), "Deformation of the Sante Marguerite 3 dam during construction and reservoir filling" 20th International Conference on Large Dams, vol.3.

Ebrahim nezhad, S. Emami Tabrizi, Barari, (2000), "Monitoring of foundation and body of Alavian dam during utilization", 4th Conference on Dam Construction, Tehran, Iran.

Bemani Yazdi, P. (2002) "Monitoring of Karkheh dam using instrumentation data after impoundment", Msc. thesis, University of Amirkabir, Department of civil and environmental engineering.

Duncan, J.M. (1996), State of the art: Limit equilibrium and finite-element analysis of slopes. ASCE, Journal of Geotechnical Engineering, Vol 122 (7), pp. 577-595.

Zamiran, S. (2012), "Modeling and analysis of earthen and rock-fill structures in FLAC", Noavar Publication.

Technical reports and instrumentation of Roodbal dam, Parab Fars Consulting Eng. Co.