吉林西部湖沼相淤泥工程特性研究

Research on engineering characteristics of lacustrine silt in the west of Jilin Province

吉林西部湖沼相淤泥呈流塑状,矿物成分以石英为主,细颗粒含量高,具有含水率高、有机质含量高、孔隙比大、压缩性高、渗透性差、排水固结特性差的工程特性。由于历史沉积的原因,流塑状淤泥层埋藏深厚且空间分布不均,各区段淤泥层厚度不均且物理力学特性存在差异。本文从物理力学性质、现场监测成果、反演分析等方面进行分析,得到湖沼相淤泥的工程特性,为工程实际提供了参考,得出的结论及建议可推广到吉林西部类似工程建设的应用。

The lacustrine silt in the west of Jilin Province is fluid-plastic and its mineral composition is mainly quartz, with high content of fine particles. It has engineering characteristics of high water content, high content of organic matter, large pore ratio, high compressibility, poor permeability and poor drainage consolidation characteristics. Due to historical sedimentation, the fluid-plastic silt layer is deeply buried and unevenly distributed in space, and the thickness of the silt layer in different sections is uneven and the physical and mechanical properties are different. Based on the analysis of physical and mechanical properties, field monitoring results, inversion analysis and other aspects, the engineering characteristics of lacustrine silt are obtained, which provides a reference for engineering practice. The conclusions and suggestions drawn can be applied to similar projects in the west of Jilin Province.