Based on Transparent Soil Test to Carry out Research on the Soil Stability Discrimination under the Suffusion

Abstract:

For deep overburden embankment base, erosion-type internal tube surge is a key problem affecting the stable operation of dams. To study the fine view mechanism of erosion type tube surge in deep overburden, this paper integrates transparent soil technology, planar laser-induced fluorescence imaging technology, firstly, through self-developed transparent soil and visualization model test platform, carry out saturated transparent soil test research, so as to obtain the two-dimensional slice collection of transparent soil samples; then with the help of Avzio software to its three-dimensional reconstruction, split solid particles and pore liquid, the pore network model is generated in the three-dimensional model with Avzio software to obtain the pore-related parameters and throat-related parameters, and plot the pore equivalent diameter and throat diameter distribution; finally, the critical fine particle diameter distribution curve is predicted by combining the previous statistical throat diameter distribution curve, and then the internal stability of the soil is evaluated, and the accurate throat distribution curve obtained predicts the fine particle diameter distribution curve. The method is proposed to evaluate the internal stability of soil by predicting the fine particle size distribution curve from the obtained accurate throat distribution curve.

• Periodical: Engineering Headway (Volume 10)
• Pages: 43-49
• DOI: https://doi.org/10.4028/p-y6TYmh
• Online since: July 2024
• Authors: Yu Kun Liu, Jia Wei Wang*
• Keywords: Embankment, Internal Erosion, Throat Diameter, Transparent Soil

References

[1] Haijun Chen, Guangming Ren, Dexin Nie, Zongli Wan, Tianjun Yang. Geological characteristics and evaluation methods of deep overburden engineering in river valleys[J]. Geological Hazards and Environmental Protection,1996(04):54-60.)

[2] Zhenzhong Shen, Liting Qiu, Hualei Zhou. Research progress on seepage prevention technology of earth-rock dam on deep overburden[J]. Advances in Water Resources and Hydropower Science and Technology, 2015, 35 (05): 27-35.)

[3] Silveira, A., de Lorena Peixoto, T., and Nogueira, J. On void size distribution of granular materials. Proceedings of the 5th Pan American Conference on Soil Mechanics and Foundation Engineering, Buenos Aires,1975. p.161–177.

[4] Ziems, J. Beitrag Zur Kontakterosion Nichtbindiger Erdstoffe. Dissertation. Technische Universität Dresden,1968.

[5] Wang Y, Dallo Y a H. On estimation of the constriction size distribution curve for cohesionless soils[J]. European Journal of Environmental and Civil Engineering, 2014, 18(6): 683-698.

DOI: 10.1080/19648189.2014.909335

[6] Vaughan PR. (1994), Criteria for the use of weak and weathered rock for embankment fill and its compaction control, 13th International conference, Soil mechanics and foundation engineering. New Dehli, India, pp.195-206.

[7] You Gao, Dean Sun. Determination of basic parameters of unimodal and bimodal soil-water characteristic curves [J]. Chinese Journal of Geotechnical Engineering, 2017, 39(10): 1884-1891.

[8] Moraci N, Mandaglio M C, Ielo D. A new theoretical method to evaluate the internal stability of granular soils[J]. Canadian Geotechnical Journal, 2012, 49(1): 45-58.

DOI: 10.1139/t11-083