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在黔中喀斯特地区通过野外调查及室内试验的方法研究了土壤机械分维特征及其与土壤黏聚力c、内摩擦角φ及土壤紧实度的关系。结果表明,研究区土壤分形维数D一般在2.80~2.93之间,当直径小于0.002 mm的土壤颗粒含量超过50%时,其分形维数则大于2.90。相关性分析表明,土壤机械分维与土壤黏聚力、土壤紧实度呈极显著正相关,土壤黏聚力和紧实度随机械分维增大而增大;土壤机械分维与内摩擦角呈极显著负相关,土壤内摩擦角随机械分维增大而减小。
Field investigation and laboratory tests were conducted to investigate the fractal dimension of soil mechanics and its relationship with soil cohesion c, internal friction angle φ and soil compaction in the karst area of central Guizhou. The results showed that the fractal dimension D of soils in the study area was generally between 2.80 and 2.93, and the fractal dimension was more than 2.90 when the soil particles with the diameter less than 0.002 mm exceeded 50%. Correlation analysis showed that soil mechanical fractal dimension had a significant positive correlation with soil cohesion and soil compaction, and soil cohesion and compaction increased with the increase of mechanical fractal dimension. Soil mechanical fractal dimension and internal friction The angle was extremely significant negative correlation, soil friction angle with the mechanical fractal dimension increases and decreases.