河北工业科技2024，Vol.41Issue(6)：426-433,8.DOI:10.7535/hbgykj.2024yx06004
有机质含量对高分解度泥炭土工程性质的影响研究
Study on the influence of organic matter content on the engineering properties of peat soil with high degree of decomposition
摘要
Abstract
To explore the relationship between the physical and mechanical properties of peat soil and the organic matter content in the soil,peat with high organic matter content and peat soil with low organic matter content were mixed in different proportions to obtain peat soil with different organic matter contents.Basic physical and mechanical property tests were conducted separately,and the influence of organic matter content on the physical properties,compression characteristics,and strength characteristics of peat soil was discussed.The experimental results show that the liquid limit,plastic limit,and plasticity index of peat soil are significantly positively correlated with organic matter content,while the specific gravity of soil particles is significantly negatively correlated with organic matter content;As the organic matter content in the soil increases,both the compression coefficient and compression index increase,while the compression modulus decreases;The influence of organic matter content on unconfined compressive strength and quick shear strength is inconsistent,with the former showing a negative correlation and the latter showing a positive correlation;With regard to the quick shear strength parameters,there is a significant positive correlation between cohesion and organic matter content,with a range of 1.58 kPa to 27.68 kPa;The internal friction angle is negatively correlated with the organic matter content,with a range of of 11.1° to 12.3°.The research results can provide a basis for the engineering construction in peatland areas.关键词
岩土力学/泥炭土/有机质含量/物理性质/强度特征Key words
geotechnical mechanics/peat soil/organic matter content/physical property/strength characteristics分类
建筑与水利引用本文复制引用
杨必进,王立娜,李育红,申显飞,韩嘉源,张连星..有机质含量对高分解度泥炭土工程性质的影响研究[J].河北工业科技,2024,41(6):426-433,8.基金项目
国家自然科学基金(52108346) （52108346）
云南省科技厅基础研究专项计划基金(202101AT070253) （202101AT070253）
云南农业大学学生科技创新创业基金(2023Y0854) （2023Y0854）
