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A STUDY ON THE CRITICAL DEPTH OF DEEP ENTRY WITH
CATASTROPHE THEORY
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Abstract Analysis show that there is a critical depth below which remarkable deformation will occur in the surrounding rock of the entry. The entry deeper than the critical depth is defined as deep entry in this paper. The potential energy function of the surrounding rock system of the entry is gained on the basis of the elastoplastic theory. Then the cusp catastrophic model of the surrounding rock system of the entry is established. Thereby，the method for determining the critical depth is presented for support design of the deep entry，and a practical case is given.
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Received: 20 May 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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