Tidal Effect on Grouting and Blocking of Flowing Water in Karst Fractures: Numerical Implementation and Its Application

Bu, Zehua; Zhang, Yichi; Pan, Dongdong; Jin, Qing; Li, Zhaofeng; Xu, Zhenhao

doi:10.1061/ijgnai.gmeng-7982

Cited by 1 publication

(2 citation statements)

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“…Thus, based on the E-E method, we developed a new numerical simulation method. 44,45 The elapsed time of slurry is termed as the transport time, which can be solved by a convection-diffusion equation. By solving the transport time and use as the calculation basis of viscosity function, the spatial variation characteristics of viscosity can be solved more accurately.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, as the viscosity of certain slurry cluster is determined by the time span from being injected to the “present,” the viscosity of the slurry cluster at any location can be expressed by a function of elapsed time. Thus, based on the E‐E method, we developed a new numerical simulation method 44,45 . The elapsed time of slurry is termed as the transport time, which can be solved by a convection‐diffusion equation.…”

Section: Introductionmentioning

confidence: 99%

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Numerical investigation of slurry property effect on grouting and blocking of flowing water in rock fractures

Pan

Zhang

et al. 2023

Num Anal Meth Geomechanics

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In order to investigate the slurry flow behavior, our newly proposed numerical method is applied to simulate the fracture grouting with flowing water condition. First, by numerical validation and experiment comparison, the advantages of this method in computation efficiency and accuracy are shown. Second, the initial velocity of water and slurry properties at different levels are selected as the influencing factors, the water reduction effect, grouting pressure, and slurry deposition behavior in different cases are investigated, and the variation characteristics of flow field and slurry outflow are analyzed. The simulation results show that within the range of slurry properties and flow velocity given in this paper, cement slurry cannot seal the water inflow. Instead, quick setting slurry with different material ratios can effectively seal the fracture. The sealing efficiency is more sensitive to the initial flow rate than the slurry property. When the groundwater flow rate is low, the effect of slurry proportion on sealing can be ignored. Meanwhile, slurry properties have more influence on the final grouting pressure. There is an obvious surge in grouting pressure after sealing, which can be used as a criterion for fracture sealing.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%