ANALYZING PROCESSES OF SEDIMENTATION AND CONSOLIDATION OF COHESIVE SEDIMENTS IN DEZ DAM RESERVOIR

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SAMADI BOROUJENI H.; SHAFAEI BAJESTAN MAHMOUD; FATHI MOGHADAM MANOUCHEHR

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Journal: Journal of Water and Soil Science Year:2007 | Volume:11 | Issue:40 (A) Page(s): 1-11

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Title

ANALYZING PROCESSES OF SEDIMENTATION AND CONSOLIDATION OF COHESIVE SEDIMENTS IN DEZ DAM RESERVOIR

Author(s)

SAMADI BOROUJENI H. | SHAFAEI BAJESTAN MAHMOUD | FATHI MOGHADAM MANOUCHEHR | Issue Writer Certificate

Keywords

SEDIMENTATIONQ2

PHYSICAL MODELQ2

CONSOLIDATION PARAMETERSQ3

EFFECTIVE STRESSQ3

Abstract

SEDIMENTATION and consolidation of cohesive sediments near the dam body can cause many problems such as clogging the bottom outlets and entering the sediments into the hydropower intakes. Flushing of these sediments through the bottom outlet will be successful only if the hydraulic conditions are designed according to the physical and mechanical properties of consolidated sediments. During the past decades many researches have been conducted on the distribution of non cohesive sediments in the reservoir, yet little information is available for cohesive sediments. Therefore the main purpose of this study is to conduct a PHYSICAL MODEL study to investigate the process of SEDIMENTATION and consolidation of cohesive sediments in the dam reservoir. The experimental tests were conducted in a settling column test with a height of 3.8 m and diameter of 0.3m. The sediment samples were collected from the Dez dam reservoir since it is predicted that in less than 5 years the sediment will reach to such an elevation that can enter into the hydropower intakes. The obtained results show that there is an algorithmic relationship between the time and changing of the sediment concentration during the SEDIMENTATION and self-weight consolidation processes. This process can be divided into four separate phases. It is also of note that in this paper the EFFECTIVE STRESS-void ratio and coefficient of permeability – void ratio relationship were obtained as a power relationship, which are in agreement with the results obtained by other investigators. These relationships can be used as primary data in the mathematical model of SEDIMENTATION and consolidation.

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APA: Copy

SAMADI BOROUJENI, H., SHAFAEI BAJESTAN, MAHMOUD, & FATHI MOGHADAM, MANOUCHEHR. (2007). ANALYZING PROCESSES OF SEDIMENTATION AND CONSOLIDATION OF COHESIVE SEDIMENTS IN DEZ DAM RESERVOIR. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 11(40 (A)), 1-11. SID. https://sid.ir/paper/14661/en

Vancouver: Copy

SAMADI BOROUJENI H., SHAFAEI BAJESTAN MAHMOUD, FATHI MOGHADAM MANOUCHEHR. ANALYZING PROCESSES OF SEDIMENTATION AND CONSOLIDATION OF COHESIVE SEDIMENTS IN DEZ DAM RESERVOIR. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2007;11(40 (A)):1-11. Available from: https://sid.ir/paper/14661/en

IEEE: Copy

H. SAMADI BOROUJENI, MAHMOUD SHAFAEI BAJESTAN, and MANOUCHEHR FATHI MOGHADAM, “ANALYZING PROCESSES OF SEDIMENTATION AND CONSOLIDATION OF COHESIVE SEDIMENTS IN DEZ DAM RESERVOIR,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 11, no. 40 (A), pp. 1–11, 2007, [Online]. Available: https://sid.ir/paper/14661/en

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