南昌工程学院学报2018，Vol.37Issue(3)：12-18,7.
鄱阳湖湖相深厚软土工程地质特性研究
Analysis of geological characteristics of deep soft soil project in Poyang Lake
摘要
Abstract
In exploring the project reconnaissance across Poyang Lake,we find that there is a layer of soft lake soil in Poyang Lake as thick as 50 ～ 60m along Duchang-Lushan eyot,which has special engineering characteristics. Employing DMAX-3C(CuKa,Ni filter),high power optical microscope and environmental scanning electron microscope(ESEM)experiment,we study the geological formation and spatial distribution regularity of soft soil at Poyang Lake,analyzing its mineral composi-tion,chemical composition,physical and mechanical properties,swell-shrink characteristics and its expansibility and the compaction in the bearing strength. The study shows that the soft soil at Poyang Lake mainly includes illite,kaolinite,chlo-rite and other clay minerals. The microstructure is dominated by the primary space,and the permeability of horizontal direc-tion is better than that of vertical direction and the clay is cemented. The swelling property of the original clay is not obvi-ous,but it increases after it is compacted. Under natural and loading conditions,the shear strength increases gradually with the increase of consolidation degree. The results of these experiments are of reference to the construction of the soft soil foun-dation of Poyang Lake.关键词
软土/微观结构/矿物分析/地质特性/抗剪强度Key words
soft soil/microstructure/mineral analysis/geological features/shear strength分类
建筑与水利引用本文复制引用
甘建军,李荐华..鄱阳湖湖相深厚软土工程地质特性研究[J].南昌工程学院学报,2018,37(3):12-18,7.基金项目
2016江西省水利技术项目(赣财农指(2016)84号) （赣财农指(2016）
国家自然科学基金应急管理项目(41641023) （41641023）
江西省科技厅科技计划项目(20161BBG70051) （20161BBG70051）
江西省教育厅科技研究项目(GJJ151124) （GJJ151124）
