Internal Piping Erosion Evaluation of Embankment Dam Considering the Spatial Variability of Soil Properties

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Ruohan Wang
  • Guan Chen
  • Yong Liu

Externe Organisationen

  • Wuhan University
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Aufsatznummer04024006
Seitenumfang14
FachzeitschriftASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering
Jahrgang10
Ausgabenummer2
Frühes Online-Datum24 Jan. 2024
PublikationsstatusVeröffentlicht - 1 Juni 2024

Abstract

Piping erosion is a crucial trigger for dam breaches. However, the effects of inherent spatial variability on seepage properties have not been considered adequately, which could lead to a significant underestimation of the risk of piping-erosion-induced dam failure. Additionally, the complex formation mechanism of erosion pipe formation poses challenges in determining the seepage path. This study proposes a probabilistic evaluation framework which combines a hydraulic–mechanical coupling method with random finite-element analysis. Failure indicators, namely hydraulic gradient and kinetic energy, are utilized within this framework. Based on the proposed framework, the spatial variability of soil properties can be considered effectively, and three cases of dams were analyzed. The results show that the proposed framework can provide a macroscopic visualization of the erosion pipe process. In addition, this framework reveals piping erosion occurrence in approximately 40% of hydraulic samples, whereas deterministic analyses fail to detect any instances of piping erosion. This suggests that deterministic analysis considerably underestimates the risk of piping erosion in practice. The effects of the depth of antiseepage measurements on the formation process of piping erosion are discussed. The results indicate that a medium-depth cut-off wall can meet the impervious requirements and reduce the construction cost in engineering practice.

ASJC Scopus Sachgebiete

Zitieren

Internal Piping Erosion Evaluation of Embankment Dam Considering the Spatial Variability of Soil Properties. / Wang, Ruohan; Chen, Guan; Liu, Yong.
in: ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering, Jahrgang 10, Nr. 2, 04024006, 01.06.2024.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Wang, R, Chen, G & Liu, Y 2024, 'Internal Piping Erosion Evaluation of Embankment Dam Considering the Spatial Variability of Soil Properties', ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering, Jg. 10, Nr. 2, 04024006. https://doi.org/10.1061/AJRUA6.RUENG-1218
Wang, R., Chen, G., & Liu, Y. (2024). Internal Piping Erosion Evaluation of Embankment Dam Considering the Spatial Variability of Soil Properties. ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering, 10(2), Artikel 04024006. https://doi.org/10.1061/AJRUA6.RUENG-1218
Wang R, Chen G, Liu Y. Internal Piping Erosion Evaluation of Embankment Dam Considering the Spatial Variability of Soil Properties. ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering. 2024 Jun 1;10(2):04024006. Epub 2024 Jan 24. doi: 10.1061/AJRUA6.RUENG-1218
Wang, Ruohan ; Chen, Guan ; Liu, Yong. / Internal Piping Erosion Evaluation of Embankment Dam Considering the Spatial Variability of Soil Properties. in: ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering. 2024 ; Jahrgang 10, Nr. 2.
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note = "Funding Information: This research is supported by the National Natural Science foundation of China (Grant No. 52079099) and the International Joint Research Platform Seed Fund Program of Wuhan University (Grant No. WHUZZJJ202207). Ruohan Wang has received financial support from the China Scholarship Council (CSC). Guan Chen is grateful for the financial support of the Sino-German (CSCDAAD) Postdoc Scholarship Program.",
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AU - Liu, Yong

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