Analytical Investigation of Sediment Formation and Transport in the Vicinity of the Water Intake Structures - A Case Study of the Dez Diversion Weir in Greater Dezful
Sedimentation process resulting from soil erosion in
the water basin especially in arid and semi-arid where poor
vegetation cover in the slope of the mountains upstream could
contribute to sediment formation. The consequence of sedimentation
not only makes considerable change in the morphology of the river
and the hydraulic characteristics but would also have a major
challenge for the operation and maintenance of the canal network
which depend on water flow to meet the stakeholder-s requirements.
For this reason mathematical modeling can be used to simulate the
effective factors on scouring, sediment transport and their settling
along the waterways. This is particularly important behind the
reservoirs which enable the operators to estimate the useful life of
these hydraulic structures. The aim of this paper is to simulate the
sedimentation and erosion in the eastern and western water intake
structures of the Dez Diversion weir using GSTARS-3 software. This
is done to estimate the sedimentation and investigate the ways in
which to optimize the process and minimize the operational
problems. Results indicated that the at the furthest point upstream of
the diversion weir, the coarser sediment grains tended to settle. The
reason for this is the construction of the phantom bridge and the
outstanding rocks just upstream of the structure. The construction of
these along the river course has reduced the momentum energy
require to push the sediment loads and make it possible for them to
settle wherever the river regime allows it. Results further indicated a
trend for the sediment size in such a way that as the focus of study
shifts downstream the size of grains get smaller and vice versa. It
was also found that the finding of the GSTARS-3 had a close
proximity with the sets of the observed data. This suggests that the
software is a powerful analytical tool which can be applied in the
river engineering project with a minimum of costs and relatively
accurate results.
[1] Hedayat.N, (2005), Improving the Performance of Water Delivery In
The Dez & Moghan Irrigation Schemes In Iran, PhD Thesis, Cranfield
University, UK (2005).
[2] Shafaaee Bejestan,.M (1994), Sedimentation Hydraulics, first Edition,
University Of Chamran, Iran
[3] Ashkarian. S, Kiamanesh. H and Hedayat. N (2010), Simulation of the
flow pattern using Flow 3D software- a case study in the Dez diversion
Weir in Dezful, Iran. Proceedings: National Conference in water, soil,
palnt and mechanization, Islamic Azad University, Dezful, Iran.
[4] Shirin, Hedayat, N, and kiamaness.H, (2010). Analytical investigation of
the sedimentation process and their underlying cause- a case study in the
Dez Diversion Weir in Dezful, Iran. Proceedings: National Conference
in water, soil, palnt and mechanization, Islamic Azad University, Dezful,
Iran.
[5] Qamari.M et al (2010). Estimating sediments entry into water intake
using GSTARS-3 - A case study of the Karkheh Dam west of Dezful.
Iran. Conference Paris.
[6] A.H. Sajedipoor, N. Hedayat and M. Mashal "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" Proceedings of WASET International Conference in Paris
28-30 July 2010.
[1] Hedayat.N, (2005), Improving the Performance of Water Delivery In
The Dez & Moghan Irrigation Schemes In Iran, PhD Thesis, Cranfield
University, UK (2005).
[2] Shafaaee Bejestan,.M (1994), Sedimentation Hydraulics, first Edition,
University Of Chamran, Iran
[3] Ashkarian. S, Kiamanesh. H and Hedayat. N (2010), Simulation of the
flow pattern using Flow 3D software- a case study in the Dez diversion
Weir in Dezful, Iran. Proceedings: National Conference in water, soil,
palnt and mechanization, Islamic Azad University, Dezful, Iran.
[4] Shirin, Hedayat, N, and kiamaness.H, (2010). Analytical investigation of
the sedimentation process and their underlying cause- a case study in the
Dez Diversion Weir in Dezful, Iran. Proceedings: National Conference
in water, soil, palnt and mechanization, Islamic Azad University, Dezful,
Iran.
[5] Qamari.M et al (2010). Estimating sediments entry into water intake
using GSTARS-3 - A case study of the Karkheh Dam west of Dezful.
Iran. Conference Paris.
[6] A.H. Sajedipoor, N. Hedayat and M. Mashal "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" Proceedings of WASET International Conference in Paris
28-30 July 2010.
@article{"International Journal of Earth, Energy and Environmental Sciences:63890", author = "M.karavanmasjedi and N.Hedayat and A.Rohani and H.Shirin", title = "Analytical Investigation of Sediment Formation and Transport in the Vicinity of the Water Intake Structures - A Case Study of the Dez Diversion Weir in Greater Dezful", abstract = "Sedimentation process resulting from soil erosion in
the water basin especially in arid and semi-arid where poor
vegetation cover in the slope of the mountains upstream could
contribute to sediment formation. The consequence of sedimentation
not only makes considerable change in the morphology of the river
and the hydraulic characteristics but would also have a major
challenge for the operation and maintenance of the canal network
which depend on water flow to meet the stakeholder-s requirements.
For this reason mathematical modeling can be used to simulate the
effective factors on scouring, sediment transport and their settling
along the waterways. This is particularly important behind the
reservoirs which enable the operators to estimate the useful life of
these hydraulic structures. The aim of this paper is to simulate the
sedimentation and erosion in the eastern and western water intake
structures of the Dez Diversion weir using GSTARS-3 software. This
is done to estimate the sedimentation and investigate the ways in
which to optimize the process and minimize the operational
problems. Results indicated that the at the furthest point upstream of
the diversion weir, the coarser sediment grains tended to settle. The
reason for this is the construction of the phantom bridge and the
outstanding rocks just upstream of the structure. The construction of
these along the river course has reduced the momentum energy
require to push the sediment loads and make it possible for them to
settle wherever the river regime allows it. Results further indicated a
trend for the sediment size in such a way that as the focus of study
shifts downstream the size of grains get smaller and vice versa. It
was also found that the finding of the GSTARS-3 had a close
proximity with the sets of the observed data. This suggests that the
software is a powerful analytical tool which can be applied in the
river engineering project with a minimum of costs and relatively
accurate results.", keywords = "Erosion, sedimentation, Dez Diversion weir,
GSTARS-3", volume = "4", number = "11", pages = "615-3", }