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EFFECT OF KEEPING CORE SOIL ON STABILITY OF TUNNEL WORKING FACE
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Abstract Based on the fact that the vertical displacements of ground surface are much greater than the permissible value in the period of the 1st Shenzhen urban tunneling operation and by means of the three-dimensional finite element method，the effect of the length of bench and core soil on the squeezing of tunnel working face，the displacement ahead of the face and stress distribution on the face are analyzed. Some valuable conclusions for the shallow tunnel construction are proposed.
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Received: 25 June 2003
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MAO Yuting1, 2, HE Manchao1, 2, LIU Fangzhou3, BAI Xing4, YANG Xiaojie1, 2, TAO Zhigang1, 2*. Development and application of a large-scale physical model system for tunnel creep testing[J]. , 2026, 45(6): 1627-1638. |
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