Hydraulic Evaluation Analysis

Oct 13, 2025 by wbrum.org 19 views

Introduction

The Belutu Irrigation Region Dam, located in Serdang Berdai Regency, North Sumatra Province, is a crucial structure that plays a significant role in supporting irrigation water needs in the region. As part of the Indonesian government's efforts to achieve food self-sufficiency, this weir is designed to irrigate an area of 5,032 hectares, making its success a vital factor in ensuring food security in the area. In this article, we will evaluate the draft of the Belutu Irrigation Area Dam, focusing on two main aspects: hydraulic evaluation and structural evaluation.

Hydraulic Evaluation Analysis

Hydraulic evaluation is a critical aspect of the Belutu Irrigation Area Dam draft, as it assesses the ability of the weir to meet the needs of irrigation water. The results of the hydraulic evaluation show that the irrigation water needs for the irrigation areas reach 1.67 liters per second per hectare, with a total irrigation water requirement of 10,085 liters per second. This figure is essential to ensure that plants in the area receive adequate water supply for their growth. The effectiveness of the Belutu Irrigation Areas in providing irrigation water will have a significant impact on the surrounding agricultural productivity.

Structural Evaluation and Dam Safety

From a structural perspective, the Belutu irrigation region weir shows an encouraging safety rate. Under normal conditions without an earthquake, the weir has a safety number of bolsters (FG) of 2.35, a safety number of soil carrying capacity (Σ) of 8.93 t/m², and safety rates for shear (FS) of 4.86. These numbers indicate that the weir can last well under normal load. However, when tested in earthquake conditions, the security rate for bolster (FG) decreased to 1.75, although the security rate for the carrying capacity of the soil (σ) increased to 12.03 t/m² and the safety number of shear (FS) to 2.02. This shows that although there is a decrease in stability to the bolster during an earthquake, the carrying capacity of the soil is strong and the sliding rate that is still safe enough to give a positive signal about the ability of the weir to continue to function in an emergency.

Plan Flood Analysis

During the plan flood plan, the Belutu weir shows quite good results. Under conditions without earthquakes, the safety rate for the bolster reached 3.9, the carrying capacity of the land was 11.05 t/m², and the sliding rate was 2.61. However, in earthquake conditions, the safety number of rolling (FG) to 2.52, the carrying capacity of the soil (σ) 14.49 t/m², and the slide rate (FS) 2.49. These results indicate that the Belutu irrigation area weir has a fairly reliable design, although it still needs more attention in terms of safety to bolsters in extreme conditions.

Conclusion

The evaluation of the Belutu Irrigation Area Dam draft provides a positive picture of the ability of this dam to support irrigation needs in the area. With data showing good stability both in normal conditions and when facing an earthquake, this weir is expected to play an effective role in realizing food self-sufficiency in Indonesia. However, further handling in the design and maintenance of weir structures is still needed to anticipate the potential risks that can arise in the future.

Recommendations

Based on the results of the evaluation, the following recommendations are made:

Improvement of Bolster Stability: The Belutu irrigation area weir needs more attention in terms of safety to bolsters in extreme conditions. Improving the stability of the bolster will ensure that the weir can withstand earthquakes and other extreme conditions.
Regular Maintenance: Regular maintenance of the weir structure is essential to ensure that it remains safe and functional. This includes regular inspections, repairs, and replacements of damaged or worn-out parts.
Monitoring of Water Levels: The Belutu irrigation area weir needs to be monitored regularly to ensure that the water levels are within the safe limits. This will prevent overtopping and damage to the weir structure.
Public Education: Public education and awareness programs should be conducted to inform the local community about the importance of the Belutu irrigation area weir and the potential risks associated with it.

Future Research Directions

The evaluation of the Belutu Irrigation Area Dam draft has provided valuable insights into the performance of the weir. However, there are still many areas that require further research and investigation. Some of the future research directions include:

Advanced Modeling Techniques: The use of advanced modeling techniques, such as computational fluid dynamics (CFD) and finite element analysis (FEA), can provide more accurate and detailed information about the performance of the Belutu irrigation area weir.
Sensitivity Analysis: Sensitivity analysis can be used to investigate the effects of various parameters, such as water levels, flow rates, and soil properties, on the performance of the weir.
Risk Assessment: Risk assessment can be used to identify potential risks associated with the Belutu irrigation area weir and to develop strategies for mitigating these risks.

Conclusion

In conclusion, the evaluation of the Belutu Irrigation Area Dam draft has provided a comprehensive analysis of the performance of the weir. The results of the evaluation have shown that the Belutu irrigation area weir has a fairly reliable design, although it still needs more attention in terms of safety to bolsters in extreme conditions. The recommendations made in this article are aimed at improving the stability of the bolster, regular maintenance, monitoring of water levels, and public education. Future research directions include advanced modeling techniques, sensitivity analysis, and risk assessment.

Q: What is the purpose of the Belutu Irrigation Area Dam?

A: The Belutu Irrigation Area Dam is a crucial structure that plays a significant role in supporting irrigation water needs in the region. It is designed to irrigate an area of 5,032 hectares, making its success a vital factor in ensuring food security in the area.

Q: What are the main aspects of the Belutu Irrigation Area Dam draft evaluation?

A: The evaluation of the Belutu Irrigation Area Dam draft includes two main aspects: hydraulic evaluation and structural evaluation. Hydraulic evaluation focuses on meeting the needs of irrigation water, while structural evaluation assesses the stability and safety of weir buildings.

Q: What are the results of the hydraulic evaluation?

A: The results of the hydraulic evaluation show that the irrigation water needs for the irrigation areas reach 1.67 liters per second per hectare, with a total irrigation water requirement of 10,085 liters per second. This figure is essential to ensure that plants in the area receive adequate water supply for their growth.

Q: What are the results of the structural evaluation?

A: From a structural perspective, the Belutu irrigation region weir shows an encouraging safety rate. Under normal conditions without an earthquake, the weir has a safety number of bolsters (FG) of 2.35, a safety number of soil carrying capacity (Σ) of 8.93 t/m², and safety rates for shear (FS) of 4.86. However, when tested in earthquake conditions, the security rate for bolster (FG) decreased to 1.75, although the security rate for the carrying capacity of the soil (σ) increased to 12.03 t/m² and the safety number of shear (FS) to 2.02.

Q: What are the recommendations for improving the Belutu irrigation area weir?

A: Based on the results of the evaluation, the following recommendations are made:

Improvement of Bolster Stability: The Belutu irrigation area weir needs more attention in terms of safety to bolsters in extreme conditions. Improving the stability of the bolster will ensure that the weir can withstand earthquakes and other extreme conditions.
Regular Maintenance: Regular maintenance of the weir structure is essential to ensure that it remains safe and functional. This includes regular inspections, repairs, and replacements of damaged or worn-out parts.
Monitoring of Water Levels: The Belutu irrigation area weir needs to be monitored regularly to ensure that the water levels are within the safe limits. This will prevent overtopping and damage to the weir structure.
Public Education: Public education and awareness programs should be conducted to inform the local community about the importance of the Belutu irrigation area weir and the potential risks associated with it.

Q: What are the future research directions for the Belutu irrigation area weir?

A: The evaluation of the Belutu Irrigation Area Dam draft has provided valuable insights into the performance of the weir. However, there are still many areas that require further research and investigation. Some of the future research directions include:

Advanced Modeling Techniques: The use of advanced modeling techniques, such as computational fluid dynamics (CFD) and finite element analysis (FEA), can provide more accurate and detailed information about the performance of the Belutu irrigation area weir.
Sensitivity Analysis: Sensitivity analysis can be used to investigate the effects of various parameters, such as water levels, flow rates, and soil properties, on the performance of the weir.
Risk Assessment: Risk assessment can be used to identify potential risks associated with the Belutu irrigation area weir and to develop strategies for mitigating these risks.

Q: What are the benefits of the Belutu irrigation area weir?

A: The Belutu irrigation area weir has several benefits, including:

Food Security: The weir provides irrigation water to the surrounding agricultural areas, ensuring food security for the local community.
Economic Benefits: The weir supports the local economy by providing water for agriculture, which in turn supports the livelihoods of farmers and other stakeholders.
Environmental Benefits: The weir helps to maintain the water table and prevent soil erosion, which can have negative impacts on the environment.

Q: What are the potential risks associated with the Belutu irrigation area weir?

A: The Belutu irrigation area weir is not without risks. Some of the potential risks associated with the weir include:

Earthquake Damage: The weir is vulnerable to earthquake damage, which can compromise its stability and safety.
Over-topping: The weir can be prone to over-topping, which can lead to damage to the structure and surrounding environment.
Soil Erosion: The weir can contribute to soil erosion, which can have negative impacts on the environment.

Q: How can the Belutu irrigation area weir be maintained and improved?

A: The Belutu irrigation area weir can be maintained and improved through regular inspections, repairs, and replacements of damaged or worn-out parts. Additionally, the weir can be improved through the use of advanced modeling techniques, sensitivity analysis, and risk assessment.