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WHOLE SPACE COMPREHENSIVE ADVANCED GEOLOGICAL PREDICTION TECHNIQUE FOR SHALLOW-BURIED SECTION OF TUNNEL UNDER COMPLICATED GEOLOGICAL CONDITION |
| LEI Mingfeng，PENG Limin，SHI Chenghua |
| (School of Civil Engineering and Architecture，Central South University，Changsha，Hunan 410075，China) |
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Abstract Taking Guanchong tunnel on Hengyang Yanling expressway as engineering background，a whole space comprehensive advanced geological prediction scheme for shallow-buried section of tunnel under complicated geological condition is established by technical means of surface spatial differential detection combined with tunnel face TSP203 system. Then it is tested and applied in this project as an example. The prediction result shows that the formations along tunnel are mainly fully weathered to strong weathered slate with rock broken zones，abundant groundwater and potential slip surface. Even more，the range between spandrel and vault stretches into the gravel clays. All of these are unsafe for tunnel construction and suggests carrying out pre-supporting by using f108 mm pipes with the length 40 m. By comparing the results of prediction and in-situ measurement，the whole space comprehensive advanced geological prediction scheme has encouraged prediction effect.
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Received: 07 August 2008
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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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