Geomechanics and Engineering

  • 제17권2호
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  • Pages.133-143
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  • 2019
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Optimization of hydraulic section of irrigation canals in cold regions based on a practical model for frost heave

  • Wang, Songhe (Institute of Geotechnical Engineering, Xi'an University of Technology) ;
  • Wang, Qinze (Institute of Geotechnical Engineering, Xi'an University of Technology) ;
  • An, Peng (College of Geology Engineering and Geomatics, Chang'an University) ;
  • Yang, Yugui (State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology) ;
  • Qi, Jilin (College of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture) ;
  • Liu, Fengyin (Institute of Geotechnical Engineering, Xi'an University of Technology)
  • 투고 : 2017.11.25
  • 심사 : 2018.01.03
  • 발행 : 2019.02.10
⟨ 이전 논문 다음 논문 ⟩

초록

An optimal hydraulic section is critical for irrigated water conservancy in seasonal frozen ground due to a large proportion of water leakage, as investigated by in-situ surveys. This is highly correlated with the frost heave of underlain soils in cold season. This paper firstly derived a practical model for frost heave of clayey soils, with temperature dependent thermal indexes incorporating phase change effect. A model test carried out on clay was used to verify the rationality of the model. A novel approach for optimizing the cross-section of irrigation canals in cold regions was suggested with live updated geometry characterized by three unique geometric constraints including slope of canal, ratio of practical flow section to the optimal and lining thickness. Allowable frost heave deformation and tensile stress in canal lining are utilized as standard in computation iterating with geometry updating while the construction cost per unit length is regarded as the eventual target in optimization. A typical section along the Jinghui irrigation canal was selected to be optimized with the above requirements satisfied. Results prove that the optimized hydraulic section exhibits smaller frost heave deformation, lower tensile stress and lower construction cost.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

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피인용 문헌

  1. Experimental Study on Normal Frost-Heave Force Generated from Loess upon Freezing considering Multiple Factors vol.2019, 2019, https://doi.org/10.1155/2019/1237105
  2. Experimental Study on Normal Frost-Heave Force Generated from Loess upon Freezing considering Multiple Factors vol.2019, 2019, https://doi.org/10.1155/2019/1237105
  3. Effect of Drainage Failure of Diversion Channel on Anti-Floating Characteristics of Inning Structure vol.719, pp.2, 2019, https://doi.org/10.1088/1755-1315/719/2/022064