A Systematic Operation Program of a Hydropower Plant Based on Minimizing the Principal Stress: Haditha Dam Case Study

Li, Jing; Ameen, Ameen Mohammed Salih; Mohammad, Thamer Ahmad; Al‐Ansari, Nadhir; Yaseen, Zaher Mundher

doi:10.3390/w10091270

Cited by 9 publications

(4 citation statements)

References 30 publications

(15 reference statements)

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“…The current authors' observation on the water loss indicates that the reservoir recharges the groundwater and this is a good indication for intensively karstified area of the reservoir. Li et al (2018) performed a dynamic analysis of the Haditha earthfill dam, integrated with a hydropower plant system containing six vertical Kaplan turbines. They concluded that understanding the effects of running hydropower plant turbines on the dam body is one of the major safety concerns for the earthfill dam, besides other safety concerns such as karstification.…”

Section: Previous Studiesmentioning

confidence: 99%

Karstification Problems in the Haditha Dam, West Iraq

Sissakian

Adamo²,

Al‐Ansari

et al. 2021

UKH J SCI ENG

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Haditha Dam is constructed on the Euphrates River in the western part of Iraq completed in 1988 and located 14 km west of Haditha town. Haditha Dam is a combined earthfill and concrete dam with a total length of 9064 m. The maximum height of the dam is 57 m from the deepest point at the river channel and dam crest level is 154.00 m (a.s.l.). The storage capacity is 6×109 m3 at normal operation water level of 143 m (a.s.l.). The exposed formations in the dam site and reservoir area are the Euphrates (Lower Miocene) and Fatha (Middle Miocene) formations. Both formations are well known in Iraq to be karstified at different intensities. The right bank of the Euphrates River is severely karstified with tens of sinkholes of different shapes, dimensions and activities. The presence of the karstified rocks is the main reason the dam has a very long grout curtain which extends along its entire length and includes the concrete powerhouse and spillway structure in the river channel, and the right and left bank extensions. The right bank extension of the grout curtain is exceptionally long due to the extent of the sinkhole area. Grouting was performed here in boreholes drilled at one-meter spacing to reduce water penetration and movement through the flank of the dam. The grout curtain under the embankment in the river section was done in two rows, while under the concrete structure it is comprised of three rows of holes. The left bank extension has two rows. The depths of all parts of the curtain varied following the karstification zones and intensities. The main aim of the current study is to elucidate and discuss the influence of the karstified rocks at the dam site and reservoir on the design and especially the length of the dam and the need for side extensions.

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Section: Previous Studiesmentioning

confidence: 99%

Karstification Problems in the Haditha Dam, West Iraq

Sissakian

Adamo²,

Al‐Ansari

et al. 2021

UKH J SCI ENG

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“…Haditha Dam is an earthfall Dam located at 34 • 120 latitudes and 42 • 210 longitudes on the narrow stretch of the Euphrates River, about 8 km northwest of Haditha city, which Located about 270 km northwest of Baghdad .Haditha Dam was constructed for multi-functional purposes and is used for hydroelectricity generation, regulating the flow of the Euphrates River and irrigation of field water (see Figure 1). After the Mosul Dam, the Haditha Dam is considered the second largest electrical supplier of power [27].…”

Section: Haditha Dam Case Studymentioning

confidence: 99%

“…Euphrates River [27] The total length of the Haditha dam is around 9 km, and the maximum height is 57 m high from the deepest point of the river. The total Dam storage is 6 trillion cubic meters at a normal operating level.…”

Section: Figure 1 Map Of Location and Layout Of Haditha Dam On Thementioning

confidence: 99%

Modelling of Flow Patterns over Spillway with CFD (Case Study: Haditha Dam in Iraq)

Almawla¹,

Kamel²,

Lateef³

2021

IJDNE

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Spillways are designing to release surplus water over a volume of storage. The excess water flows from the top of the reservoir and is carried back to the river by a spillway. Many radial gates were destroyed under hydrodynamic load. Radial gate connectors are susceptible to fatigue failure due to excessive vibration; therefore, gate vibration during operation must be investigated to confirm safe operation at the design water pressure. Several studies were carried out to analyse and simulation of flow over the spillway. In this article, the flow pattern over the Haditha dam spillway has been simulated using computational fluid dynamics (CFD). The numerical model was performed using Ansys Fluent 2020 R1 to simulate the flow properties; determination of cavitation damage at three discharges corresponding in the design of Haditha dam are 4700, 7140, and 7900 m3/s. In addition to finding the effect of gate vibration under dynamic water loads. The Realisable k-ɛ turbulence model was utilised with the volume of fluid (VOF) model to simulate the interaction between air and water phases. The validation of the numerical model was achieved by comparing it with a physical model. The physical model of the Haditha Dam spillway was made from iron with a scale of 1:110. It has been designed and constructed in a hydraulic laboratory according to the modelling principle of the hydraulic structure. The results showed that a high agreement between the physical and numerical model and the k-ɛ turbulence model could simulate the Haditha dam spillway with low cost and few times. The cavitation damage may occur at the region start at the end of the arching spillway to stretches downstream, and there is no damage of gate vibration under dynamic water load.

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“…In the case of run-off-the-river dams, the potential energy in the flowing water is converted by a powerhouse into electrical energy [68]. The two factors that determine the annual potential power output of any hydropower plant are the available head and water discharge [69,70]. In the powerhouse, the potential energy of the flowing water is converted via a simple concept to a force that turns the turbine; the turning of the turbine provides the required mechanical energy to power a generator for electricity generation [12].…”

Section: Powerhousementioning

confidence: 99%

State-of-the Art-Powerhouse, Dam Structure, and Turbine Operation and Vibrations

Yaseen‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬

Ameen

Aldlemy

et al. 2020

Sustainability

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Dam and powerhouse operation sustainability is a major concern from the hydraulic engineering perspective. Powerhouse operation is one of the main sources of vibrations in the dam structure and hydropower plant; thus, the evaluation of turbine performance at different water pressures is important for determining the sustainability of the dam body. Draft tube turbines run under high pressure and suffer from connection problems, such as vibrations and pressure fluctuation. Reducing the pressure fluctuation and minimizing the principal stress caused by undesired components of water in the draft tube turbine are ongoing problems that must be resolved. Here, we conducted a comprehensive review of studies performed on dams, powerhouses, and turbine vibration, focusing on the vibration of two turbine units: Kaplan and Francis turbine units. The survey covered several aspects of dam types (e.g., rock and concrete dams), powerhouse analysis, turbine vibrations, and the relationship between dam and hydropower plant sustainability and operation. The current review covers the related research on the fluid mechanism in turbine units of hydropower plants, providing a perspective on better control of vibrations. Thus, the risks and failures can be better managed and reduced, which in turn will reduce hydropower plant operation costs and simultaneously increase the economical sustainability. Several research gaps were found, and the literature was assessed to provide more insightful details on the studies surveyed. Numerous future research directions are recommended.

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A Systematic Operation Program of a Hydropower Plant Based on Minimizing the Principal Stress: Haditha Dam Case Study

Cited by 9 publications

References 30 publications

Karstification Problems in the Haditha Dam, West Iraq

Karstification Problems in the Haditha Dam, West Iraq

Modelling of Flow Patterns over Spillway with CFD (Case Study: Haditha Dam in Iraq)

State-of-the Art-Powerhouse, Dam Structure, and Turbine Operation and Vibrations

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