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On-line Access: 2024-08-27
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Visualizing the dynamic progression of backward erosion piping in a Hele-Shaw cell
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Gang ZHENG, Jing-bo TONG, Tian-qi ZHANG, Zi-wu WANG, Xun LI, Ji-qing ZHANG, Chun-yu QI, Hai-zuo ZHOU, Yu DIAO. Visualizing the dynamic progression of backward erosion piping in a Hele-Shaw cell[J]. Journal of Zhejiang University Science A, 2022, 23(11): 945-954.
@article{title="Visualizing the dynamic progression of backward erosion piping in a Hele-Shaw cell",
author="Gang ZHENG, Jing-bo TONG, Tian-qi ZHANG, Zi-wu WANG, Xun LI, Ji-qing ZHANG, Chun-yu QI, Hai-zuo ZHOU, Yu DIAO",
journal="Journal of Zhejiang University Science A",
volume="23",
number="11",
pages="945-954",
year="2022",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A2100686"
}
%0 Journal Article
%T Visualizing the dynamic progression of backward erosion piping in a Hele-Shaw cell
%A Gang ZHENG
%A Jing-bo TONG
%A Tian-qi ZHANG
%A Zi-wu WANG
%A Xun LI
%A Ji-qing ZHANG
%A Chun-yu QI
%A Hai-zuo ZHOU
%A Yu DIAO
%J Journal of Zhejiang University SCIENCE A
%V 23
%N 11
%P 945-954
%@ 1673-565X
%D 2022
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A2100686
TY - JOUR
T1 - Visualizing the dynamic progression of backward erosion piping in a Hele-Shaw cell
A1 - Gang ZHENG
A1 - Jing-bo TONG
A1 - Tian-qi ZHANG
A1 - Zi-wu WANG
A1 - Xun LI
A1 - Ji-qing ZHANG
A1 - Chun-yu QI
A1 - Hai-zuo ZHOU
A1 - Yu DIAO
J0 - Journal of Zhejiang University Science A
VL - 23
IS - 11
SP - 945
EP - 954
%@ 1673-565X
Y1 - 2022
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A2100686
Abstract: With the utilization of underground space, backward erosion piping (BEP) has been observed in many underground structures (e.g., shield tunnels) founded on sandy aquifers. However, due to invisibility, the geometry of the eroded pipe and its spatial evolution with time during the piping process was still not clear. In this study, we developed a hele-Shaw cell to visualize the dynamic progression of BEP. With imaging process technology, we obtained a typical process of BEP (the erosion process can be divided into a piping progression phase and a piping stabilization phase), quantitatively characterized the formation of erosion pipes, and compared the patterns of erosion (e.g., the erosion area A and the maximum erosion radius Rmax) that spontaneously develop under different fluxes of water. The most interesting finding is that the sand grains in a thicker Hele-Shaw model are easier to dislodge, which is possibly due to the granular system in a thicker model having more degrees of freedom, reducing the stability of the sand grains.
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