Presenting a typical river training plan for ephemeral streams, with the flood controlling purpose - A Case study in Ahoodarreh, Khomein
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Nadergholi Ebrahimi , Aliakbar Davodirad *  |
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Abstract: (7742 Views) |
Erosion and sediment control are provided by river organization in the mountainous areas in dry lands, planting, tree in suitable areas, and creating a small aquifer. In order to provide a model for controlling and enhancing the productivity of seasonal river in the Ahoodareh region in the Chenar village of Khomein town, 21 gabion constructions were implemented with different features with height of 1 to 2 meters and width of the crown 1 to 1.6 meters. The hydraulic aspect of gabion effects were analyzed using the discharge data in the outlet by monitoring of gabion construction from various aspects of hydraulic, structural and sedimentation. The results show that most of the effects of gabion on the Ahoodarreh River hydraulic structures on changing shear force and the speed graphs, water level changes and flow power are evident. These effects decreased the flow rate in the range of the gabion effect and subsequently the Froude number, as the flow regime index, become in the subcritical range. Also, the effects of water level changes on the hydraulic structures (current profile) are obvious for the return periods of 2, 10, and 25 years along the river and location of the gabions.
of 2, 10, and 25 years along the river and location of the gabions.
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Keywords: Ahoodarreh, ephemeral stream, flood, gabion, river organization. |
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Full-Text [PDF 4240 kb]
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Type of Study: Research |
Subject:
Special Received: 2016/03/15 | Accepted: 2016/03/15 | Published: 2016/03/15
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