Analytical Study of Sedimentation Formation in Lined Canals using the SHARC Software- A Case Study of the Western Intake Structure in Dez Diversion Weir in Dezful, Iran
Sedimentation is a hydraulic phenomenon that is
emerging as a serious challenge in river engineering. When the flow
reaches a certain state that gather potential energy, it shifts the
sediment load along channel bed. The transport of such materials can
be in the form of suspended and bed loads. The movement of these
along the river course and channels and the ways in which this could
influence the water intakes is considered as the major challenges for
sustainable O&M of hydraulic structures. This could be very serious
in arid and semi-arid regions like Iran, where inappropriate watershed
management could lead to shifting a great deal of sediments into the
reservoirs and irrigation systems. This paper aims to investigate
sedimentation in the Western Canal of Dez Diversion Weir in Iran,
identifying factors which influence the process and provide ways in
which to mitigate its detrimental effects by using the SHARC
Software.
For the purpose of this paper, data from the Dezful water authority
and Dezful Hydrometric Station pertinent to a river course of about 6
Km were used.
Results estimated sand and silt bed loads concentrations to be 193
ppm and 827ppm respectively. Given the available data on average
annual bed loads and average suspended sediment loads of 165ppm
and 837ppm, there was a significant statistical difference (16%)
between the sand grains, whereas no significant difference (1.2%)
was find in the silt grain sizes. One explanation for such finding
being that along the 6 Km river course there was considerable
meandering effects which explains recent shift in the hydraulic
behavior along the stream course under investigation. The sand
concentration in downstream relative to present state of the canal
showed a steep descending curve. Sediment trapping on the other
hand indicated a steep ascending curve. These occurred because the
diversion weir was not considered in the simulation model.
[1] N .Hedayat, (2005). " Improving the performance of water delivery in
the Dez and Moghan irrigation schemes in Iran ", PhD thesis, Crandfieid
University, UK.
[2] N. Hedayat, Z. Tamoradi and H. Kiamanesh, A . Sh. Afroos,
(2010).Proceedings of the National Conference in water, Soil, Plant and
agricultural Mechanization, Islamic, Azad University, Dezful, Iran
[3] H. Shirin (2009), "Investigating the sedimentation process using the
SHARC software- A case study of the in the Eastern water intake of the
Dez Diversion Weir in Dezful". M.Sc dissertation, I.Azad University,
Dezful, Iran.
[4] A.H. Sajedi, M. Mashal and N. Hedayat, (2010), " Analytical study of
the sediment formation using the SHARC computer model- A case study
of the western water Intake in the Dez diversion weir in Dezful", Iran.
[5] H. Shirin , N. Hedayat and H. Kiamanesh (2010), " Investigating the
sedimentation process using the SHARC software- A case study of the
in the Eastern water intake of the Dez Diversion Weir in Dezful",
Proceedings of the National Conference in water, Soil, Plant and
agricultural Mechanization, Islamic, Azad University, Dezful, Iran.
[6] A.H. Sajedi, (2010), " Analytical study of the sediment formation using
the SHARC computer model- A case study of the western water Intake
in the Dez diversion weir in Dezful", Iran. M.Sc dissertation, I.Azad
University, Dezful, Iran.
[1] N .Hedayat, (2005). " Improving the performance of water delivery in
the Dez and Moghan irrigation schemes in Iran ", PhD thesis, Crandfieid
University, UK.
[2] N. Hedayat, Z. Tamoradi and H. Kiamanesh, A . Sh. Afroos,
(2010).Proceedings of the National Conference in water, Soil, Plant and
agricultural Mechanization, Islamic, Azad University, Dezful, Iran
[3] H. Shirin (2009), "Investigating the sedimentation process using the
SHARC software- A case study of the in the Eastern water intake of the
Dez Diversion Weir in Dezful". M.Sc dissertation, I.Azad University,
Dezful, Iran.
[4] A.H. Sajedi, M. Mashal and N. Hedayat, (2010), " Analytical study of
the sediment formation using the SHARC computer model- A case study
of the western water Intake in the Dez diversion weir in Dezful", Iran.
[5] H. Shirin , N. Hedayat and H. Kiamanesh (2010), " Investigating the
sedimentation process using the SHARC software- A case study of the
in the Eastern water intake of the Dez Diversion Weir in Dezful",
Proceedings of the National Conference in water, Soil, Plant and
agricultural Mechanization, Islamic, Azad University, Dezful, Iran.
[6] A.H. Sajedi, (2010), " Analytical study of the sediment formation using
the SHARC computer model- A case study of the western water Intake
in the Dez diversion weir in Dezful", Iran. M.Sc dissertation, I.Azad
University, Dezful, Iran.
@article{"International Journal of Earth, Energy and Environmental Sciences:51653", author = "A.H. Sajedipoor and N. Hedayat and M. Mashal", title = "Analytical Study of Sedimentation Formation in Lined Canals using the SHARC Software- A Case Study of the Western Intake Structure in Dez Diversion Weir in Dezful, Iran", abstract = "Sedimentation is a hydraulic phenomenon that is
emerging as a serious challenge in river engineering. When the flow
reaches a certain state that gather potential energy, it shifts the
sediment load along channel bed. The transport of such materials can
be in the form of suspended and bed loads. The movement of these
along the river course and channels and the ways in which this could
influence the water intakes is considered as the major challenges for
sustainable O&M of hydraulic structures. This could be very serious
in arid and semi-arid regions like Iran, where inappropriate watershed
management could lead to shifting a great deal of sediments into the
reservoirs and irrigation systems. This paper aims to investigate
sedimentation in the Western Canal of Dez Diversion Weir in Iran,
identifying factors which influence the process and provide ways in
which to mitigate its detrimental effects by using the SHARC
Software.
For the purpose of this paper, data from the Dezful water authority
and Dezful Hydrometric Station pertinent to a river course of about 6
Km were used.
Results estimated sand and silt bed loads concentrations to be 193
ppm and 827ppm respectively. Given the available data on average
annual bed loads and average suspended sediment loads of 165ppm
and 837ppm, there was a significant statistical difference (16%)
between the sand grains, whereas no significant difference (1.2%)
was find in the silt grain sizes. One explanation for such finding
being that along the 6 Km river course there was considerable
meandering effects which explains recent shift in the hydraulic
behavior along the stream course under investigation. The sand
concentration in downstream relative to present state of the canal
showed a steep descending curve. Sediment trapping on the other
hand indicated a steep ascending curve. These occurred because the
diversion weir was not considered in the simulation model.", keywords = "SHARC model, sedimentation, Western canal, Dezdiversion weir", volume = "4", number = "8", pages = "332-3", }