三江平原沼泽土微观特性试验研究
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摘要
从微观形态、微结构特征、粒度分析、土颗粒间的排列方式、孔隙大小分布、有机质含量以及矿物成分等方面对三江平原的两种沼泽土和北京翠湖湿地土进行了一系列微观结构的对比试验。结果表明:沼泽白土和翠湖湿地土与一般软土性质相似,但沼泽黑土含水率、液性指数、孔隙比、孔隙数量、孔径和孔隙体积远远大于沼泽白土和翠湖湿地土,有机质含量最大,特性明显突出。研究成果有助于提高对沼泽土特性的认识,可为沼泽地陷落体救助和沼泽湿地保护和合理开发等工程建设提供参考。
Two typical swamp soils in Sanjiang Plain and another wetland soil in Cuihu,Beijing are tested in aspects of micromorphic,microstructure characteristic,mode arrangement of soil particles,pore-size distribution,organic content and mineral composition etc.Test results show that moisture content,liquidity index,void ratio,void number,void size,void volume and organic content of the black swamp soil are far more than that of the white swamp soil;and the wetland soil,which indicated that the properties of the swamp soil are obviously different.Study results can provide references for understanding properties of swamp soil,sinking salvage,protection,rational exploitation and engineering construction in swamp regions.
Two typical swamp soils in Sanjiang Plain and another wetland soil in Cuihu,Beijing are tested in aspects of micromorphic,microstructure characteristic,mode arrangement of soil particles,pore-size distribution,organic content and mineral composition etc.Test results show that moisture content,liquidity index,void ratio,void number,void size,void volume and organic content of the black swamp soil are far more than that of the white swamp soil;and the wetland soil,which indicated that the properties of the swamp soil are obviously different.Study results can provide references for understanding properties of swamp soil,sinking salvage,protection,rational exploitation and engineering construction in swamp regions.
引文
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[14]周旻,侯浩波,张大捷,等.湖泊底泥改性固化的强度特性和微观结构[J].岩土力学,2008,29(4):1010-1014.ZHOU Min,HOU Hao-bo,ZHANG Da-jie,et al.Strength characteristics and microstructure of solidified lake sludge[J].Rock and Soil Mechanics,2008,29(4):1010-1014.
[15]孟庆山,杨超,许孝祖,等.动力排水固结前后软土微观结构分析[J].岩土力学,2008,29(7):1759-1763.MENG Qing-shan,YANG Chao,XU Xiao-zu,et al.Analysis of microstructure of soft clay before and after its improvement with dynamic consolidation by drainage[J].Rock and Soil Mechanics,2008,29(7):1759-1763.
[16]李丽华,陈轮,高盛焱.沼泽土物理力学性质和微观结构的研究[J].工业建筑,2008,(10):61-64.LI Li-hua,CHEN Lun,GAO Sheng-yan.Study on physicomechanical properties and microstructure of swamp soil[J].Industrial Construction,2008,(10):61-64.
[2]牛作民.海洋细粒沉积物工程地质性质的研究[J].中国科学,1992,(4):434-442.NIU Zuo-min.Studied on the engineering geology of the marine fine deposit[J].Science in China,1992,(4):434-442.
[3]孔令伟,吕海波,汪稔,等.海口某海域软土工程特性的微观机制浅析[J].岩土力学,2002,3(1):36-40.KONG Ling-wei,LüHai-bo,WANG Ren,et al.Preliminary analysis of micro-mechanism of engineering properties for soft soil in a sea area of Haikou[J].Rock and Soil Mechanics,2002,3(1):36-40.
[4]雷华阳,肖树芳.天津海积软土微观结构与工程性质初探[J].地质与勘探,2002,38(6):81-85.LEI Hua-yang,XIAO Shu-fang.Primary exploration on engineering properties of marine soft soil microstructure in Tianjin region[J].Geology and Propecting,2002,38(6):81-85.
[5]李萍,李培英,徐兴永,等.南黄海油气资源区粘性土物理力学性质及微结构特征[J].海洋科学进展,2005,23(4):482-486.LI Ping,LI Pei-ying,XU Xing-yong,et al.Physicomechanical properties and microstructure features of cohesive soil in the Southern Yellow sea oil and gas resource area[J].Advances in Marine Science,2005,23(4):482-486.
[6]张敏江,阎婧,初红霞.结构性软土微观结构定量化参数的研究[J].沈阳建筑大学学报(自然科学版),2005,21(5):455-460.ZHANG Min-jiang,YAN Jing,CHU Hong-xia.The quantitative analysis of microstructure parameter of soft soil[J].Journal of Shenyang Jianzhu University(Natural Science),2005,21(5):455-460.
[7]毛灵涛,薛茹,安里千,等.软土孔隙微观结构的分形研究[J].中国矿业大学学报,2005,34(5):600-604.MAO Ling-tao,XUE Ru,AN Li-qian,et al.Fractal approach on soft soil porosity microstructure[J].Journal of China University of Mining&Technology,2005,34(5):600-604.
[8]蒋希雁,张志红,屈建平.从黏性土微观结构的角度论述含水率变化对土的工程特性的影响[J].河北建筑工程学院学报,2002,20(3):14-16.JIANG Xi-yan,ZHANG Zhi-hong,QU Jian-ping.The analysis of the water content's effects on soil engineering properties from microcosmic structure[J].Journal of Hebei Institute of Architectural Engineering,2002,20(3):14-16.
[9]MASAHARU FUKUE,YOSHIO SATO,MITSUAKI YAMASHITA,et al.Change in microstructure of soils due to natural mineralization[J].Applied Clay Science,2003,23(1-4):169-177.
[10]邓津,王兰民,张振中,等.甘肃永登湿陷性新近堆积黄土的微观结构分析[J].西北地震学报,2005,27(3):267-271.DENG Jin,WANG Lan-min,ZHANG Zhen-zhong,et al.Analysis on microstructure of the recently cumulated collapsible loessinYongdeng County,Gansu Province[J].Northwestern Seismological Journal,2005,27(3):267-271.
[11]WANG Mei,BAI XIAOHONG.Collapse property and microstructure of loess[J].Unsaturated Soil,Seepage,and Environmental Geotechnics,2007,6(7):111-118.
[12]刘莹,王清.吹填土沉积后微观结构特征定量化研究[J].水文地质工程地质,2006,(3):124-128.LIU Ying,WANG Qing.Quantitative study of microstructure characteristics of dredger fills after sediment[J].Hydrogeology and Engineering Geology,2006,(3):124-128.
[13]张留俊,黄晓明,王攀,等.泥炭的微观结构及工程性质[J].中国公路学报,2007,20(1):47-52.ZHANG Liu-jun,HUANG Xiao-min,WANG Pan,et al.Microstructure and engineering properties of peat[J].China Journal of Highway and Transport,2007,20(1):47-52.
[14]周旻,侯浩波,张大捷,等.湖泊底泥改性固化的强度特性和微观结构[J].岩土力学,2008,29(4):1010-1014.ZHOU Min,HOU Hao-bo,ZHANG Da-jie,et al.Strength characteristics and microstructure of solidified lake sludge[J].Rock and Soil Mechanics,2008,29(4):1010-1014.
[15]孟庆山,杨超,许孝祖,等.动力排水固结前后软土微观结构分析[J].岩土力学,2008,29(7):1759-1763.MENG Qing-shan,YANG Chao,XU Xiao-zu,et al.Analysis of microstructure of soft clay before and after its improvement with dynamic consolidation by drainage[J].Rock and Soil Mechanics,2008,29(7):1759-1763.
[16]李丽华,陈轮,高盛焱.沼泽土物理力学性质和微观结构的研究[J].工业建筑,2008,(10):61-64.LI Li-hua,CHEN Lun,GAO Sheng-yan.Study on physicomechanical properties and microstructure of swamp soil[J].Industrial Construction,2008,(10):61-64.
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