Simulation of Cofferdam Calculations Using Geo-Studio Application in Peusangan Hydropower Dam Construction

Hermansyah Hermansyah; Irwan Irwan; Habib Satria; Indri Dayana; Rudi Salam

doi:10.25077/aijaset.v3i2.82

Authors

Hermansyah Hermansyah Universitas Medan Area, Indonesia
Irwan Irwan Universitas Medan Area, Indonesia
Habib Satria Universitas Medan Area, Indonesia
Indri Dayana Universitas Medan Area, Indonesia
Rudi Salam Universiti Brunei Darussalam, Brunei Darussalam

DOI:

https://doi.org/10.25077/aijaset.v3i2.82

Abstract

Cofferdam is a building in the form of earth, stone, concrete or masonry filling and holds water, prevents flooding, provides irrigation. The building has many functions such as for agriculture, power generation, and tourist attractions. Cofferdam will also be very helpful in flood control which will control flood water so that it will not overflow excessively which endangers the surrounding community. Besides having great benefits. If the cofferdam collapses (broken) it will cause flash floods that result in casualties. Therefore the cofferdam must be designed safely and technically feasible. The research approach used in this study is a quantitative approach using the 2012 GEO-SLOPE program. The conclusions from the analysis of slope seepage and seepage stability are the Critical Safety Factors for cofferdam stability according to the results of the analysis after running SLOPE/W are 1.711 & 1.512 because it is higher than 1.5 (SNI 8460:2017 Geotechnical Requirements Design, This means that the stability of the cofferdam is safe. The modeling results show that the seepage discharge is 1.81x10-7 m3/s = 1.81x10-4 liters/sec = 15.64 liters/day which is smaller than the maximum allowable discharge of 50 liters/day. So it can be concluded that the seepage discharge is safe.

Author Biographies

Hermansyah Hermansyah, Universitas Medan Area, Indonesia

Faculty of Engineering, Universitas Medan Area, Medan, Indonesia

Irwan Irwan, Universitas Medan Area, Indonesia

Faculty of Engineering, Universitas Medan Area, Medan, Indonesia

Indri Dayana, Universitas Medan Area, Indonesia

Faculty of Engineering, Universitas Medan Area, Medan, Indonesia

Rudi Salam, Universiti Brunei Darussalam, Brunei Darussalam

Faculty of Integrated Technologies, Universiti Brunei Darussalam, Brunei Darussalam

References

D. Xie, X. Li, T. Zhou, and Y. Feng, “Estimating the contribution of environmental variables to water quality in the postrestoration littoral zones of Taihu Lake using the APCS-MLR model,” Sci. Total Environ., vol. 857, 2023, doi: 10.1016/j.scitotenv.2022.159678.

S. Chen et al., “Deformation and Force Analysis of Wood-Piled Island Cofferdam Based on Equivalent Bending Stiffness Principle,” Buildings, vol. 12, no. 8, 2022, doi: 10.3390/buildings12081104.

M. Gutierrez and S. H. Prassetyo, “Cellular Cofferdams for Hydropower Generation,” in World Congress on Civil, Structural, and Environmental Engineering, 2022. doi: 10.11159/icgre22.179.

C. Qin, L. Duan, D. Wang, B. Duan, M. Fan, and H. Wang, “Three-dimensional numerical simulation of wave-induced seabed response around a dumbbell-shaped cofferdam,” Appl. Ocean Res., vol. 134, 2023, doi: 10.1016/j.apor.2023.103501.

T. A. Madanayaka and N. Sivakugan, “Validity of the Method of Fragments for Seepage Analysis in Circular Cofferdams,” Geotech. Geol. Eng., vol. 38, no. 2, 2020, doi: 10.1007/s10706-019-01111-9.

T. Matsuda, N. Naito, and K. Miura, “MODEL TESTS ON SAND BOILING AROUND COFFERDAM CONSIDERING THE EFFECT OF GEOMATERIAL PROPERTIES,” Int. J. GEOMATE, vol. 24, no. 102, 2023, doi: 10.21660/2023.102.g12218.

T. A. Madanayaka and N. Sivakugan, “Simple solutions for square and rectangular cofferdam seepage problems,” Can. Geotech. J., vol. 56, no. 5, 2019, doi: 10.1139/cgj-2018-0295.

L. DengSong, Y. KeChen, and Z. Shunwen, “Effect of residual cofferdam at the diversion tunnel inlet on the index of river closure and the dumped materials: A Case study,” Ain Shams Eng. J., vol. 13, no. 3, 2022, doi: 10.1016/j.asej.2021.10.011.

L. Chen and D. S. Jeng, “Study on the seabed response around a dumbbell cofferdam under combined wave and current loading,” Ocean Eng., vol. 256, 2022, doi: 10.1016/j.oceaneng.2022.111456.

P. Jiang, Y. Huang, Z. Tao, J. Zhu, N. Wang, and J. Qiao, “Deformation Characteristics and Safety Evaluation of the Throw Filling Soft Clay Cofferdam under Super-Historical Flood Conditions,” Adv. Civ. Eng., vol. 2022, 2022, doi: 10.1155/2022/9578477.

B. Feng, C. Y. Zhang, X. J. Wang, and Y. J. Qian, “Mechanical properties of film-bag sand cofferdam: theoretical analysis and numerical study,” J. Asian Archit. Build. Eng., 2023, doi: 10.1080/13467581.2023.2165882.

Z. Lin, S. Wang, S. Fu, and J. Huo, “Numerical study on effects of the cofferdam area in liquefied natural gas storage tank on the leakage and diffusion characteristics of natural gas,” Chinese J. Chem. Eng., vol. 29, 2021, doi: 10.1016/j.cjche.2020.07.049.

A. F. Uribe-Henao, L. G. Arboleda-Monsalve, D. A. Aguirre-Molina, and D. G. Zapata-Medina, “Construction-induced effects in a cofferdam excavation using Hypoplasticity and Shotcrete models,” Tunn. Undergr. Sp. Technol., vol. 124, 2022, doi: 10.1016/j.tust.2022.104446.

Y. Hu et al., “The Influence of Water-Level Fluctuation on the Instability and Seepage Failure of Dump-Fill Cofferdam,” Adv. Civ. Eng., vol. 2022, 2022, doi: 10.1155/2022/5845340.

D. Li, N. Q. Zhou, X. N. Wu, and J. C. Yin, “Seepage–stress coupling response of cofferdam under storm surge attack in Yangtze estuary,” Mar. Georesources Geotechnol., vol. 39, no. 5, 2021, doi: 10.1080/1064119X.2020.1712630.

A. Kamanbedast and A. Delvari, “Analysis of earth dam: Seepage and stability using ansys and geo-studio software,” World Appl. Sci. J., vol. 17, no. 9, 2012.

S. M. Sadiq, F. A. Kubba, and F. K. I. Ahmed, “2-D steady seepage flow model to simulate the contaminates transportation through homogeneous earth dam using Geo–Studio software,” in IOP Conference Series: Materials Science and Engineering, 2020, vol. 870, no. 1. doi: 10.1088/1757-899X/870/1/012028.

M. Th Al-Hadidi and S. H. Hashim, “Finite element analysis of seepage for Kongele earth dam Using Geo- Studio software,” in Journal of Physics: Conference Series, 2021, vol. 1895, no. 1. doi: 10.1088/1742-6596/1895/1/012003.