土石混合体研究现状及发展趋势

在总结国内外有关土石混合体方面的研究资料的基础上,分别从土石混合体的细观结构特征、抗剪强度特征、宏观弹性参数特征、渗透性特征、细观结构与强度关系及细观力学数值试验等6个方面,对土石混合体研究成果进行了综述。在此基础上,对目前有关土石混合体物理力学性质研究方面存在的不足进行了总结,分析了其未来的发展趋势,指出综合利用地质学、几何学、计算科学、图像处理技术、形态学等多学科交叉技术对土石混合体的细观结构进行三维重建和随机生成;开发适用于复杂岩土介质的数值结构模型和新型实验设备,从细观结构层面深入研究土石混合体宏观变形与破坏机制并建立其结构化本构模型是未来发展的方向。

Research status and development trend of soil-rock mixture

Based on research data on soil-rock mixtures at home and abroad,the research status of soil-rock mixtures was analyzed in terms of meso-structure properties,shear strength properties,macro-elastic parameters,permeation properties,the relationship between meso-structure properties and shear strength properties,and the numerical tests of meso-mechanics of soil-rock mixtures.The deficiency of studies of physical and mechanical properties of soil-rock mixtures were summarized and its development trend was also analyzed on the basis of the research status of soil-rock mixtures.An interdisciplinary technology integrating geology,geometry,computational science,image processing technology,and morphology was used to three dimensions reconstruct and to randomly generate the meso-structure of the soil-rock mixture.The numerical structural model and new laboratory equipment applicable to the complex geotechnical media should be developed.The macroscopic deformation and failure mechanisms of soil-rock mixture should be studied in-depth at meso-structure level and the trend of development should move toward the establishment of a structural constitutive model.