Abstract
Water and sand gushing will lead to the destruction of upper cohesive soil that further form cavity, and the ground collapse caused by the development of soil cavity adversely affects the geotechnical building or foundation. In this study, the theory of elastic mechanics clamped beam was used to establish the arbitrary point stress calculation model and the stress solution of the clay soil under the action of gravity was derived. According to the equilibrium state of ultimate stress and unified strength theory, the formula for calculating the critical radius of cavity induced by water and sand gushing was obtained. The parametric study of above formulas shows that the cavity radius decreases with the increased depth of clay layer and Poisson’s number of clay layer. The higher the clay cohesion is, the higher is the cavity clay. Moreover, the limit radius of cavity first increases and then decreases with the increased of clay thickness. The results of theoretical analysis of critical collapse radius and the results of model test demonstrate that the calculating value of critical collapse radius based on unified strength theory is consistent with the test results.
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References
Chen F, Wang YC, Jiang W (2021) Numerical simulation of ground movement induced by water and sand gushing in subway through fault based on DEM-CFD. Computer and Geotechnics 139:104282
Ding HJ, Huang DJ, Wang HM (2005) Analytical solution for fixed end beam subjected to uniform load. Journal of Zhejiang University 6A(8):779–783, DOI: https://doi.org/10.1007/s10483-006-1002-z
Huang Z, Bai YC, Xu HJ (2017) A theoretical model to predict the critical hydraulic gradient for soil particle movement under two-dimensional seepage flow. Water 828(9):1–14, DOI: https://doi.org/10.3390/w9110828
Indraratana B, Vafai F (1997) Analytical model for particle migration within base soil-filter system. Journal of Geotechnical and Geoenvironmental Engineering 123(6):600–600, DOI: https://doi.org/10.1061/(ASCE)1090-0241(1997)123:2(100)
Indratna B, Nguyen VT, Rujiatkamjorn C (2011) Assessing the potential of internal erosion and suffusion of granular soils. Journal of Geotechnical and Geoenvironmental Engineering 137(5):550–554, DOI: https://doi.org/10.1061/(ASCE)GT.1943-5606.0000447
Israr J, Indraratna B (2019) Study of critical hydraulic gradients for seepage-induced failures in granular soils. Journal of Geotechnical and Geoenvironmental Engineering 145(7):04019025, DOI: https://doi.org/10.1061/(ASCE)GT.1943-5606.0002062
Kenney T, Lau D (1985) Internal stability of granular filters. Canadian Geotechnical Journal 22(2):215–225, DOI: https://doi.org/10.1016/0148-9062(86)91751-1
Korff M, Mair RJ, van Tol AF, Kaalberg FJ (2011) The response of piled buildings to deep excavations. 7th international symposium on geotechnical aspects of underground construction in soft ground, May 17–19, Rome, Italy
Li M, Fannin RJ (2012) A theoretical envelope for internal instability of cohesionless soil. Geotechnique 62(1):77–80, DOI: https://doi.org/10.1680/geot.10.T.019
Mao CX (2005) Study on piping and filters: Part I of piping. Rock and Soil Mechanics 26(2):209–215, DOI: https://doi.org/10.16285/j.rsm.2005.02.008
Wang ZC, Li GD (2020) Experimental study on stratigraphic subsidence induced by sand leakage in tunnel lining cracks. Journal of Civil Engineering 24(8):2345–2352, DOI: https://doi.org/10.1007/s12205-020-1958-1
Wu ZS, Li S, Tu YL, Wang YQ (2020) Study on safety thickness theory of palm surface outburst prevention based on unified strength theory. Chinese Journal of Underground Space and Engineering 16(6):1705–1710 (in Chinese)
Wu QH, Zhang W, Liu Y, Cui HD (2018) Quantifying the process of karst collapse by a physical model. Journal of Yangtze River Scientific Research Institute 35(3):52–58, DOI: https://doi.org/10.11988/ckyyb.20171079
Xu ZL (2006) Theory of elasticity. Higher Education Press, Beijing, China, 37–46
Yang J, Yin ZY, Zhang DM (2018) A coupled hydro-mechanical modeling of tunnel leakage in sand layer. 4th GeoShanghai international conference on tunneling and underground construction, May 27–30, Shanghai, China
Yu MH, Wu XX, Shi J, Zhou GG (2020) A new strategy for determining failure criteria of soil. Journal of Xi’an Jiaotong University 54(8):1–10, DOI: https://doi.org/10.7652/xjtuxb202008001
Zheng G, Dai X, Diao Y, Zeng CF (2016) Experimental and simplified model study of the development of ground settlement under hazards induced by loss of groundwater and sand. Natural Hazards 82:1869–1893, DOI: https://doi.org/10.1007/s11069-016-2275-3
Zhong Z, Yu T (2007) Analytical solution of a cantilever functionally graded beam. Composites Science and Technology 67(3–4):481–488, DOI: https://doi.org/10.1016/j.compscitech.2006.08.023
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Financial supports from Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Grant NO. Z020014 is sincerely acknowledged.
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Chen, F., Wang, Y., Li, Y. et al. Investigation on the Collapse Mechanism of Overlying Clay Layer Based on the Unified Strength Theory. KSCE J Civ Eng 26, 3734–3740 (2022). https://doi.org/10.1007/s12205-022-1884-5
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DOI: https://doi.org/10.1007/s12205-022-1884-5