Displacement prediction of tunnel surrounding rock based on space-time unification kriging model

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作者：
Key Laboratory of Metallogenic Prediction of Nonferrous Metals, Geological Environmental Monitoring, Ministry of Education, China [1 ]
不详 [2 ]
不详 [3 ]
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来源：
Intl. J. Earth Sci. Eng. | / 6卷 / 3040-3045期
关键词：
Tunnels; -; Forecasting;
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摘要：
Making interpolation into the classical Kriging spatial interpolation for space-time expansion, and establishing the displacement prediction model of tunnel surrounding rock by space-time semivariogram; analyzing the relation of parameters and transformation, giving the calculation procedure and method for spatial and temporal interpolation. On that basis, space-time unification Kriging interpolation model is applied to predict the crown settlement displacement value within a certain scope at front of tunnel face at any time during the period of tunnel construction. Analyzing and comparing the relation of actual measurement and predicted displacement to time curve taking Sunanshan Tunnel as test object. Computed results show that the model can reflect the development and variation tendency of crown settlement and displacement better, indicating that the precision of spatial and temporal unification Kriging model meets code requirements and it is effective and feasible in displacement prediction of surrounding rock of actual tunnel project. © 2015 CAFET-INNOVA TECHNICAL SOCIETY. All rights reserved.
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