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Solution to the Breach of the Dike of Keur Bara KAIRE, Located in the Commune of Notto Diobasse in the Department of Thiès, Senegal

Received: 16 July 2024     Accepted: 22 August 2024     Published: 28 November 2024
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Abstract

This article studies the rupture of the Keur Bara KAIRE dike, located in the commune of Notto Diobasse in the department of Thiès in Senegal. The village is crossed by a stream which collects rainwater from the west to the east, following a natural slope. The overflow of this stream causes serious flooding, leading to the total cutting of the road and the isolation of the population. These floods had tragic consequences, resulting in two losses of human life. To regulate the water level, prevent flooding and protect agricultural and urban areas from overflows, the Senegalese authorities initiated the project to build the Keur Bara KAIRE dike in 2004, unfortunately the latter gave way in 2017. The geotechnical analysis was carried out on samples taken from various points on the site, revealing that the terrain is mainly composed of fine sand and the embankment is made with clayey sand. Morphometric and hydrological investigations highlight that the watershed of the Keur Bara KAIRE dike covers an area of 3.72 km², with a projected flow of 54.99 m³/s. The resizing of the dike revealed the following data: a length of 132 meters and a height of 3 meters. The spillway is 52.99 meters long with a reservoir height of 1.22 meters. The bay walls have a thickness of 50 cm and the embankments have a slope of ½ upstream and downstream. The stability calculation on the broken dike reveals a sliding safety factor (FSG) of 1.84 which complies with the standard and an overturning safety factor (FSR) of 0.13 which is not verified. The surface of the watershed which is equal to 3.72 km², also the smallest height of precipitation is equal to 234.9 mm and the largest 664.4 mm, the ORSTOM and CIEH methods for hydraulic calculations.

Published in Journal of Civil, Construction and Environmental Engineering (Volume 9, Issue 6)
DOI 10.11648/j.jccee.20240906.13
Page(s) 197-210
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Keur Bara KAIRE, Dike, Geotechnical, Topography Surveys, Watershed, Stability

References
[1] ANSD, «Projection of the population of the Thiès region» 2022.
[2] C. Sophie and L. Jean, “Drinking water service: From the logic of supply to the control of demand,” Jwarp, 1996. Concrete dikes. [Performance]. 2020.
[3] I. SEYE, Design of a rainwater sanitation network integrated into a geographic information system in the Sampathé district, Thiés: UFR SI, 2019, p. 9.
[4] C. MERLIN, “Drinking Supply Project for Cities in the Central and Coastal Zone. Dakar,” (July 2010).
[5] S. Faye, “Hydrodynamic modeling of the aquifers of the northern coast between Kayar and Saint-Louis. Impact of future withdrawals envisaged within the framework of the water supply of Dakar and its surroundings,” Dakar, 1995.
[6] B. Igor and G. Didier, “Tool to aid in the diagnosis of the drinking water network for the city of Chisinau by spatial and temporal analysis of hydraulic dysfunctions,” jwarp, 2004.
[7] M. AVERETTE, 2005. [Online]. Available:
[8] SETICO/CONCEPT, “Possible variants of water resource mobilization,” 2013.
[9] C. M. S. SONES, “Mobilization of alternative water resources for irrigation in the Dakar region. 79 p.,” 2007.
[10] M. D. KHOUSSA, “Study of the dike,” at Hydrological Analysis-Diagnostic of the Sibidiang dam in the commune of Medina Gounass, UFR-SET, 2020, p. 60.
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  • APA Style

    Camara, N., Niane, B., Tamba, S. (2024). Solution to the Breach of the Dike of Keur Bara KAIRE, Located in the Commune of Notto Diobasse in the Department of Thiès, Senegal. Journal of Civil, Construction and Environmental Engineering, 9(6), 197-210. https://doi.org/10.11648/j.jccee.20240906.13

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    ACS Style

    Camara, N.; Niane, B.; Tamba, S. Solution to the Breach of the Dike of Keur Bara KAIRE, Located in the Commune of Notto Diobasse in the Department of Thiès, Senegal. J. Civ. Constr. Environ. Eng. 2024, 9(6), 197-210. doi: 10.11648/j.jccee.20240906.13

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    AMA Style

    Camara N, Niane B, Tamba S. Solution to the Breach of the Dike of Keur Bara KAIRE, Located in the Commune of Notto Diobasse in the Department of Thiès, Senegal. J Civ Constr Environ Eng. 2024;9(6):197-210. doi: 10.11648/j.jccee.20240906.13

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  • @article{10.11648/j.jccee.20240906.13,
      author = {Ndiouga Camara and Birane Niane and Séni Tamba},
      title = {Solution to the Breach of the Dike of Keur Bara KAIRE, Located in the Commune of Notto Diobasse in the Department of Thiès, Senegal
    },
      journal = {Journal of Civil, Construction and Environmental Engineering},
      volume = {9},
      number = {6},
      pages = {197-210},
      doi = {10.11648/j.jccee.20240906.13},
      url = {https://doi.org/10.11648/j.jccee.20240906.13},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jccee.20240906.13},
      abstract = {This article studies the rupture of the Keur Bara KAIRE dike, located in the commune of Notto Diobasse in the department of Thiès in Senegal. The village is crossed by a stream which collects rainwater from the west to the east, following a natural slope. The overflow of this stream causes serious flooding, leading to the total cutting of the road and the isolation of the population. These floods had tragic consequences, resulting in two losses of human life. To regulate the water level, prevent flooding and protect agricultural and urban areas from overflows, the Senegalese authorities initiated the project to build the Keur Bara KAIRE dike in 2004, unfortunately the latter gave way in 2017. The geotechnical analysis was carried out on samples taken from various points on the site, revealing that the terrain is mainly composed of fine sand and the embankment is made with clayey sand. Morphometric and hydrological investigations highlight that the watershed of the Keur Bara KAIRE dike covers an area of 3.72 km², with a projected flow of 54.99 m³/s. The resizing of the dike revealed the following data: a length of 132 meters and a height of 3 meters. The spillway is 52.99 meters long with a reservoir height of 1.22 meters. The bay walls have a thickness of 50 cm and the embankments have a slope of ½ upstream and downstream. The stability calculation on the broken dike reveals a sliding safety factor (FSG) of 1.84 which complies with the standard and an overturning safety factor (FSR) of 0.13 which is not verified. The surface of the watershed which is equal to 3.72 km², also the smallest height of precipitation is equal to 234.9 mm and the largest 664.4 mm, the ORSTOM and CIEH methods for hydraulic calculations.
    },
     year = {2024}
    }
    

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    AB  - This article studies the rupture of the Keur Bara KAIRE dike, located in the commune of Notto Diobasse in the department of Thiès in Senegal. The village is crossed by a stream which collects rainwater from the west to the east, following a natural slope. The overflow of this stream causes serious flooding, leading to the total cutting of the road and the isolation of the population. These floods had tragic consequences, resulting in two losses of human life. To regulate the water level, prevent flooding and protect agricultural and urban areas from overflows, the Senegalese authorities initiated the project to build the Keur Bara KAIRE dike in 2004, unfortunately the latter gave way in 2017. The geotechnical analysis was carried out on samples taken from various points on the site, revealing that the terrain is mainly composed of fine sand and the embankment is made with clayey sand. Morphometric and hydrological investigations highlight that the watershed of the Keur Bara KAIRE dike covers an area of 3.72 km², with a projected flow of 54.99 m³/s. The resizing of the dike revealed the following data: a length of 132 meters and a height of 3 meters. The spillway is 52.99 meters long with a reservoir height of 1.22 meters. The bay walls have a thickness of 50 cm and the embankments have a slope of ½ upstream and downstream. The stability calculation on the broken dike reveals a sliding safety factor (FSG) of 1.84 which complies with the standard and an overturning safety factor (FSR) of 0.13 which is not verified. The surface of the watershed which is equal to 3.72 km², also the smallest height of precipitation is equal to 234.9 mm and the largest 664.4 mm, the ORSTOM and CIEH methods for hydraulic calculations.
    
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Author Information
  • Geotechnical Department, UFR Engineering Sciences, Iba Der THIAM University of Thiès, Thiès, Sénégal

  • Geotechnical Department, UFR Engineering Sciences, Iba Der THIAM University of Thiès, Thiès, Sénégal

  • Civil Engineering Department, Polytechnic School of Thiès, Thiès, Sénégal

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