Hydraulic Model Investigation on Stepped Spillway's Plain and Slotted Roller Bucket
In ogee spillway, the released flood water from crest to toe possesses a high amount of kinetic energy causing scour and erosion on the spillway structure. The dam projects normally have a stilling basin as an energy dissipater which has specific energy dissipation limitations. The stepped spillway is a better option to minimize kinetic energy along the chute and safely discharge water in the river domain. The Khadakwasla dam is situated in Pune, Maharashtra (India), and has scouring and erosion issues on the chute of ogee spillway and on the stilling basin. The present study develops a physical hydraulic model for the dam spillway with steps, plain and slotted roller bucket as per IS Code 6934 (1998) and IS Code 7365 (2010). Experiments were performed at heads of 4m (low head) and 6m (high head) on the developed physical models, namely on the plain and slotted roller bucket model for the ogee spillway and the plain and slotted roller bucket model for the stepped spillway. It was found that the plain roller bucket of ogee spillway dissipates 81.26% of energy at the low head, whereas the stepped spillway with slotted roller bucket dissipates the 83.86% of the energy at the high head.
M. Ashiq, A. Sattar, “Optimization of Energy Dissipation Works for Nai Gaj Dam Project”, World Environmental and Water Resource Congress, Rhode Island, USA, May 16-20, 2010
M. R. Chamani, N. Rajaratnam, “Characteristics of skimming flow over stepped spillways”, Journal of Hydraulic Engineering, Vol. 125, No. 4, pp. 361-368, 1999
G. C. Christodoulou, “Energy dissipation on stepped spillway”, Journal of Hydraulic Engineering, Vol. 119, No. 5, pp. 644-649, 1993
H. Chanson, “Comparison of energy dissipation nappe and skimming flow regime on stepped chutes”, Journal of Hydraulic Research, Vol. 32, No. 2, pp. 213-218, 1994
G. Degoutte, “Skimming flow in stepped spillway, discussion”, Journal of Hydraulic Engineering-ASCE, Vol. 118, No. 1, pp. 111-113, 1992
N. Rajaratnam, K. Subramanya, “Profile of the hydraulic jump”, Journal of Hydraulic Division, Vol. 94, No. 3, pp. 663-674, 1998
J. G. Chatila, B. R. Jurdi, “Stepped spillway as an energy dissipator”, Canadian Water Resource Journal, Vol. 29, No. 3, pp. 147-158, 2004
R. M. Sorensen, “Stepped spillway hydraulic model investigation”, Journal of Hydraulic Engineering, Vol. 111, No. 12, pp. 1461-1472, 1985
A. Liaghat, A. Adib, H. R. Gafouri, “Evaluating the effects of dam construction on the morphological changes of downstream meandering rivers (Case study: Karkheh River)”, Engineering, Technology & Applied Science Research ,Vol. 7, No. 2, pp. 1515-1522, 2017
Y. K. Tung, L. W. Mays, “Optimum design of stilling basins for overflow spillway”, Journal of the Hydraulic Division, Vol. 108, No. 10, pp. 1163-1178, 1982
R. M. Khatsuria, Hydraulics of Spillways and Energy Dissipators, CRC Press, 2004
S. K. Mazumder, P. L. Patel, “Model Study of a Ski-Jump Type Energy Dissipator”, National Conference on Hydraulics and Water Resources-HYDRO 2001, pp. 425-432, 2001
V. V. Bhosekar, M. R. Bhajantri, B. S. Sunderlal, S. Patnaik, “Limitations of spillway roller bucket”, Water and Energy International, Vol. 69, No. 7, pp. 47-54, 2012
P. B. Nangare, A. S. Kote, “Experimental investigation of an ogee stepped spillway with plain and slotted roller bucket for energy dissipation”, International Journal of Civil Engineering and Technology, Vol. 8, No. 8, pp. 1549-1555, 2017
Bureau of Indian Standards, IS 6934 (1998): Hydraulic Design of High Ogee Overflow Spillways-Recommendations, Bureau of Indian Standards, 1998
C. Chafi, A. Hazzab, A. Seddini, “Study of flow and energy dissipation in stepped spillway”, Jordan Journal of Civil Engineering, Vol. 4, No. 1, pp. 1-11, 2010
L. Peyras, P. Royet, G. Degoutte, “Flow and energy dissipation over stepped gabion weirs”, Journal of Hydraulic Engineering, Vol. 118, No. 5, pp. 707-717, 1992
A. H. K. Al-Shukur, S. K. H. Aal-Khalaf, I. M. A. Al-Sharifi, “Study of optimum safe hydraulic design of stepped spillway by physical models”, International Journal of Scientific and Engineering Research, Vol. 5, No. 1, pp. 1356-1365, 2014
Bureau of Indian Standards, IS 7365 (2010): Criteria for Hydraulic Design of Bucket Type Energy Dissipators, Bureau of Indian Standards, 2010
W. H. Hager, L. Damei, “Sill-controlled energy dissipator”, Journal of Hydraulic Research, Vol. 30, No. 2, pp. 165-181, 1992
MetricsAbstract Views: 204
PDF Downloads: 171
Authors who publish with this journal agree to the following terms:
- Authors retain the copyright and grant the journal the right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) after its publication in ETASR with an acknowledgement of its initial publication in this journal.
Most read articles by the same author(s)
- A. S. Kote, D. V. Wadkar, Modeling of Chlorine and Coagulant Dose in a Water Treatment Plant by Artificial Neural Networks , Engineering, Technology & Applied Science Research: Vol. 9 No. 3 (2019): June, 2019