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RESEARCH ON SATURATED AND UNSATURATED FLOW
MECHANISM OF CLAYSTONE
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Abstract Coupled unsaturated flow in claystone has high effect on strength and stability of underground engineering. Based on experimental results of unsaturated flow in claystone，mechanical and unsaturated flow coupled constitutive model is applied to simulate the shrinkage and swelling phenomena in claystone tunnel during excavation，concrete support and ventilation processes. The whole flow process in claystone from state of saturated to desaturated state and then to resaturated state is obtained from the numerical results. The achievements are quite useful to explain the argillization and collapse mechanism in practice，and have great theoretical and practical significance.
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Received: 24 December 2003
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LI Botao1, 2, 3, TAN Yuxuan1, LIN Haifei4, 5*, WEI Jianping1, 2, 3, ZHANG Hongtu1, 2, 3, LI Shugang4, 5, WEI Zongyong4, 5, WANG Pei4, LUO Rongwei4, LIU Yanwei1, 2, 3. Mechanical properties and mesoscopic damage evolution of coal under liquid-nitrogen freezing at different initial temperatures[J]. , 2026, 45(6): 1757-1772. |
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