区域土体膨胀率空间变异特征分析与三维模拟

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Abstract Goal is to analysis and model the spatial variability of soil expansive property quantitatively. With the collected data of boreholes and soil samples，the spatial variability patterns of soil expansibility of Binhu District，Hefei City，are explored in different direction and scale. And then，the three-dimensional expansibility variation model is constructed by using universal Kriging method as the mapping tool through GSIS2.0. Analysis results are validated by cross-validation method. Based on the above results，taking the local weather and distribution of water system into account，quantitative analysis and assessment of potential hazard from expansive soil are performed and some suggestions were proposed for civil planning and developing of the underground space. The research showed that three-dimensional analysis and modeling of subsurface geological environmental attributes is an effective，scientific，intuitive methodology for underground space planning and development，and it is also an effective mean for the attributes? quantitative analysis and assessment.

Key words： soil mechanics spatial variability universal Kriging variogram geological property modeling soil expansibility

Received: 17 November 2010

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http://www.rockmech.org/EN/Y2011/V30/IS2/3811

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