A grouting simulation method for quick-setting slurry in karst conduit: The sequential flow and solidification method

Xu, Zhenhao; Pan, Dongdong; Li, Shucai; Zhang, Yichi; Bu, Zehua; Liu, Jie

doi:10.1016/j.jrmge.2021.11.006

Cited by 18 publications

(3 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides, in order to avoid the massive computation work caused by redundant sequences, the solidified slurry is combined by sequential fusion. By comparing the previous experiments, the accuracy of this method in the simulation of fracture grouting and karst conduit grouting can be verified 43 . The SFS method has been applied to the numerical simulation of karst conduit grouting considering the flow control technology, and it is verified that the flow control technology is effective for accelerating conduit sealing 15,43 .…”

Section: Introductionmentioning

confidence: 74%

“…By comparing the previous experiments, the accuracy of this method in the simulation of fracture grouting and karst conduit grouting can be verified. 43 The SFS method has been applied to the numerical simulation of karst conduit grouting considering the flow control technology, and it is verified that the flow control technology is effective for accelerating conduit sealing. 15,43 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.…”

Section: Introductionmentioning

confidence: 93%

“…43 The SFS method has been applied to the numerical simulation of karst conduit grouting considering the flow control technology, and it is verified that the flow control technology is effective for accelerating conduit sealing. 15,43 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.…”

Section: Introductionmentioning

confidence: 93%

See 2 more Smart Citations

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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 74%