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At the foot of a spillway, the jump rating curve is below the tailwater curve at low flows and above it at high flows. The suitable type of energy dissipator for this situation is
- a)a ski-jump bucket
- b)a horizontal apron
- c)a sloping apron
- d)a stilling pool
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
At the foot of a spillway, the jump rating curve is below the tailwate...
Definition of stilling basin:
A depression in a channel or reservoir deep enough to reduce the velocity or turbulence of the flow.
IS code for stilling basin (IS 4997): Criteria for design of hydraulic jump type stilling basins with horizontal and sloping aprons.
How does the energy dissipation occur in stilling basin:
Aprons concrete impact basin is an energy-dissipating device located at the outlet of the spillway in which flow from the discharge conduit strikes a vertical hanging baffle. Energy dissipation occurs as the discharge strikes the baffle, thus, performance is not dependent on the tailwater.
Stilling basin energy dissipator with pool - MLL Concrete
Stilling basin energy dissipator with pooapronsl
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At the foot of a spillway, the jump rating curve is below the tailwate...
Suitable type of Energy Dissipator for a spillway with a jump rating curve below the tailwater curve at low flows and above it at high flows is a stilling pool.
Explanation:
Jump rating curve is the graphical representation of the relationship between the height of the hydraulic jump and the discharge passing through the spillway. On the other hand, the tailwater curve shows the relationship between the downstream water level and the discharge passing through the spillway.
When the jump rating curve is below the tailwater curve at low flows, it means that the downstream water level is higher than the height of the hydraulic jump. In this situation, the energy dissipation occurs naturally due to the turbulence in the downstream flow. However, at high flows, the jump rating curve is above the tailwater curve, indicating that the downstream water level is lower than the height of the hydraulic jump. This situation can cause significant erosion and damage to the downstream channel.
To prevent this, an energy dissipator is necessary to reduce the energy of the flowing water and prevent erosion. Among the various types of energy dissipators available, a stilling pool is the most suitable for this situation. A stilling pool is a basin constructed downstream of the spillway to absorb the energy of the flowing water and dissipate it safely.
Advantages of Stilling Pool:
- The stilling pool is a cost-effective solution for energy dissipation.
- It can handle a wide range of flow rates and discharge capacities.
- It is easy to construct and maintain.
- It has a low impact on the environment compared to other energy dissipators.
- It can be designed to accommodate different types of spillways and hydraulic conditions.
Explanation:
Jump rating curve is the graphical representation of the relationship between the height of the hydraulic jump and the discharge passing through the spillway. On the other hand, the tailwater curve shows the relationship between the downstream water level and the discharge passing through the spillway.
When the jump rating curve is below the tailwater curve at low flows, it means that the downstream water level is higher than the height of the hydraulic jump. In this situation, the energy dissipation occurs naturally due to the turbulence in the downstream flow. However, at high flows, the jump rating curve is above the tailwater curve, indicating that the downstream water level is lower than the height of the hydraulic jump. This situation can cause significant erosion and damage to the downstream channel.
To prevent this, an energy dissipator is necessary to reduce the energy of the flowing water and prevent erosion. Among the various types of energy dissipators available, a stilling pool is the most suitable for this situation. A stilling pool is a basin constructed downstream of the spillway to absorb the energy of the flowing water and dissipate it safely.
Advantages of Stilling Pool:
- The stilling pool is a cost-effective solution for energy dissipation.
- It can handle a wide range of flow rates and discharge capacities.
- It is easy to construct and maintain.
- It has a low impact on the environment compared to other energy dissipators.
- It can be designed to accommodate different types of spillways and hydraulic conditions.
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At the foot of a spillway, the jump rating curve is below the tailwater curve at low flows and above it at high flows. The suitable type of energy dissipator for this situation isa)a ski-jump bucketb)a horizontal apronc)a sloping aprond)a stilling poolCorrect answer is option 'D'. Can you explain this answer? for Civil Engineering (CE) 2025 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about At the foot of a spillway, the jump rating curve is below the tailwater curve at low flows and above it at high flows. The suitable type of energy dissipator for this situation isa)a ski-jump bucketb)a horizontal apronc)a sloping aprond)a stilling poolCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for At the foot of a spillway, the jump rating curve is below the tailwater curve at low flows and above it at high flows. The suitable type of energy dissipator for this situation isa)a ski-jump bucketb)a horizontal apronc)a sloping aprond)a stilling poolCorrect answer is option 'D'. Can you explain this answer?.
At the foot of a spillway, the jump rating curve is below the tailwater curve at low flows and above it at high flows. The suitable type of energy dissipator for this situation isa)a ski-jump bucketb)a horizontal apronc)a sloping aprond)a stilling poolCorrect answer is option 'D'. Can you explain this answer? for Civil Engineering (CE) 2025 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about At the foot of a spillway, the jump rating curve is below the tailwater curve at low flows and above it at high flows. The suitable type of energy dissipator for this situation isa)a ski-jump bucketb)a horizontal apronc)a sloping aprond)a stilling poolCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for At the foot of a spillway, the jump rating curve is below the tailwater curve at low flows and above it at high flows. The suitable type of energy dissipator for this situation isa)a ski-jump bucketb)a horizontal apronc)a sloping aprond)a stilling poolCorrect answer is option 'D'. Can you explain this answer?.
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At the foot of a spillway, the jump rating curve is below the tailwater curve at low flows and above it at high flows. The suitable type of energy dissipator for this situation isa)a ski-jump bucketb)a horizontal apronc)a sloping aprond)a stilling poolCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for At the foot of a spillway, the jump rating curve is below the tailwater curve at low flows and above it at high flows. The suitable type of energy dissipator for this situation isa)a ski-jump bucketb)a horizontal apronc)a sloping aprond)a stilling poolCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of At the foot of a spillway, the jump rating curve is below the tailwater curve at low flows and above it at high flows. The suitable type of energy dissipator for this situation isa)a ski-jump bucketb)a horizontal apronc)a sloping aprond)a stilling poolCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
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