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Experimental and Numerical Studies of Self-Expansible Polyurethane Slurry Diffusion Behavior in a Fracture Considering the Slurry Temperature

Author

Listed:
  • Heyang Jia

    (School of Hydraulic and Civil Engineering, Zhengzhou University, Zhengzhou 450001, China
    National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology, Zhengzhou 450001, China)

  • Fuming Wang

    (National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology, Zhengzhou 450001, China)

  • Xiaolong Li

    (School of Hydraulic and Civil Engineering, Zhengzhou University, Zhengzhou 450001, China
    National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology, Zhengzhou 450001, China)

  • Yunxiang Gui

    (School of Hydraulic and Civil Engineering, Zhengzhou University, Zhengzhou 450001, China
    National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology, Zhengzhou 450001, China)

  • Yanhui Zhong

    (School of Hydraulic and Civil Engineering, Zhengzhou University, Zhengzhou 450001, China
    National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology, Zhengzhou 450001, China)

  • Bei Zhang

    (School of Hydraulic and Civil Engineering, Zhengzhou University, Zhengzhou 450001, China
    National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology, Zhengzhou 450001, China)

Abstract

Polyurethane grouting material (polymer) has been widely used in rock mass fracture grouting. The previous test of polymer slurry grouting in planar fracture did not consider the influence of temperature; therefore, in this paper, a test of polymer slurry grouting in planar fracture was firstly conducted in order to explore the diffusion characteristics of polymer slurry. The results show that the preheating temperature of polymer slurry has a great influence on the diffusion of slurry in fractures, which should be considered in the research of polymer fracture grouting. In addition, the slurry temperature is related to the chemical reaction of the polymer itself. However, the existing polymer fracture grouting models ignore the influence of temperature and the chemical reaction of the polymer slurry itself, which lack the rationality to reveal the diffusion behavior of the polymer slurry in fracture. Therefore, in this paper, a chemical reaction-fluid dynamic (CF) model was established. In addition, the Particle Swarm Optimization (PSO) algorithm was used to obtain the chemical reaction kinetic parameters of the polymer slurry. Based on the CF model, the diffusion characteristics of the polymer slurry during the fracture diffusion process were calculated. The applicability of the CF model was verified by comparing the experimental data with the calculated results. Finally, the influence of polymer preheating temperature and ambient temperature on slurry fracture grouting behavior was explored by the CF model. The research in this article provides some theoretical reference for the design of grouting parameters in fracture grouting engineering.

Suggested Citation

  • Heyang Jia & Fuming Wang & Xiaolong Li & Yunxiang Gui & Yanhui Zhong & Bei Zhang, 2023. "Experimental and Numerical Studies of Self-Expansible Polyurethane Slurry Diffusion Behavior in a Fracture Considering the Slurry Temperature," Sustainability, MDPI, vol. 15(11), pages 1-21, May.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:11:p:8563-:d:1155237
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    References listed on IDEAS

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    1. Heyang Jia & Xiaolong Li & Meimei Hao & Yang Li & Yanhui Zhong & Bei Zhang, 2021. "Test Method for the Solubility Model of Physical Blowing Agent of Self-Expanding Polymer," Mathematical Problems in Engineering, Hindawi, vol. 2021, pages 1-10, April.
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