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“易滑地层的工程地质性质研究”项目经过多年的攻关,通过对甘肃省三类典型易滑地层的物质组成、物理、水理和力学性质研究,分析了黄土脆性破坏特征的峰-残强降比与含水量间存在三阶段变化趋势;建立了土体微结构定量化指标(孔隙形态分形维数)与土抗剪强度指标间的升维生成型分形模型;验证了邓肯—张双曲线模型在描述炭质千枚岩类易滑地层大尺寸剪切本构关系方面的适用性;建立了炭质千枚岩类特殊易滑地层的指数动力本构模型。在炭质千枚岩、板岩类易滑地层工程地质性质研究方面达到国际先进水平。
After years of research, through the study of the material composition, physical, hydraulic and mechanical properties of three typical slippery strata in Gansu Province, this paper analyzes the characteristics of the peak - There is a three-stage trend between the ratio of residuals and the ratio of water content to water content. A fractal model of ascending-generating type was established between quantitative indexes of soil microstructure (pore morphology fractal dimension) and soil shear strength index. Hyperbolic model in describing the large-scale shear constitutive relationship of carbonaceous phyllite slippery strata; exponential dynamic constitutive model of carbonaceous phyllite slippery formation is established. In carbonaceous phyllite, slate slippery stratum engineering geological properties of research reached the international advanced level.