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通过大量土工试验,对鹤(岗)-大(连)公路路基草炭土密度、含水量与天然孔隙比及压缩系数进行相关性研究。发现草炭土密度与天然含水量存在较好的幂函数关系;密度与天然孔隙比及压缩系数存在较好的指数函数关系;含水量与天然孔隙比及压缩系数均存在很好的指数关系。通过对比发现,各参数之间的相关关系与理论公式吻合程度较好。比较吉林省其他地区草炭土物理力学指标的相关关系,均与鹤大草炭土显示出很好的相似性。结果表明:本文所建立的草炭土密度、含水量分别与天然孔隙比、压缩系数的相关关系,可以为吉林地区草炭土地基参数计算及预测提供重要参考。
A large number of soil tests were conducted to study the correlation between the soil moisture density, natural void fraction and compressibility of He-Kong-Da-Dalian highway embankment. It was found that there was a good power function relationship between the density of peat and the natural water content. There was a good exponential relationship between the density and the natural porosity ratio and the compressibility coefficient. There was a good exponential relationship between the water content and the natural porosity ratio and the compression coefficient. The comparison shows that the correlation between the parameters is in good agreement with the theoretical formula. Comparing the physical and mechanical indexes of peat soil in other areas of Jilin Province showed good similarity with that of Hecao peat soil. The results show that the correlation between soil porosity and water content and the natural porosity and compressibility established by this paper can provide important references for the calculation and prediction of peat soil parameters in Jilin area.