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黏土抗剪强度演化与酸雨引发滑坡的关系——以三峡库区滑坡为例
RELATION BETWEEN EVOLUTION OF CLAY SHEAR STRENGTH AND LANDSLIDE INDUCED BY ACID RAIN桾AKING LANDSLIDES IN THREE GORGES RESERVOIR AREA FOR EXAMPLE

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赵宇 1   崔鹏 1   胡良博 2  
文摘 研究由酸雨诱发的土体抗剪强度变化对滑坡形成可能产生的影响.样品取自三峡库区滑坡新出露的滑面及其邻近面.测试结果显示,滑面上蒙脱石含量明显高于邻近面,相反,邻近面上伊利石含量明显高于滑面.在实验室内用弱酸溶液浸泡蒙脱石、伊利石、高岭石3种重塑土试件,测试不同浸泡时间后试件矿物成分和抗剪强度的变化,以此模拟现场酸雨作用下滑面的形成过程.试验揭示,经酸液浸泡后试件内摩擦角的变化最明显,降低幅度超过1/3,同时黏土矿物成分从含部分伊利石和伊/蒙混层矿物演化成以蒙脱石为主.然后,内摩擦角回升,并消耗蒙脱石生成新的高岭石,此阶段黏聚力的变化微弱.伊利石和高岭石重塑土试件则相对稳定.最后讨论黏土的化学-力学模型.
其他语种文摘 Possible effects of changes in soil shear strength induced by acid rain on landslide formation are investigated. Soil samples from freshly exposed slip surface and adjacent surface have been studied at two landslides in the Three Gorges Reservoir area, China. A visibly higher smectite content at the slip surface and a dominant content of illite in the adjacent surface are observed. In laboratory, remolded soils are subjected to acid water immersion and tested for changes in their mineral compositions and shear strength after immersion with different durations. The largest change occurs in the internal friction angle, which drops over one-third, going with the change of the original smectitic soil with a substantial illite component into completely smectite dominated soil. Subsequently the internal friction angle rises back, simultaneously with neoformation of kaolinite at the expense of the smectite component. Changes in cohesion are much less significant. The original koalinite-rich and illite-rich samples are found to be much more stable. A chemo-mechanical model of clay is discussed at last.
来源 岩石力学与工程学报 ,2009,28(3):576-582 【核心库】
关键词 边坡工程 ; 抗剪强度演化 ; 滑面 ; 黏土 ; 酸雨 ; 重塑土 ; 三峡库区
地址

1. 中国科学院 成都山地灾害与环境研究所, 中国科学院山地灾害与地表过程重点实验室, 四川, 成都, 610041  

2. 杜克大学, 美国, 达勒姆, 27708

语种 中文
文献类型 研究性论文
ISSN 1000-6915
学科 地质学
基金 国家自然科学基金 ;  美国国家科学基金 ;  中国科学院山地灾害与地表过程重点实验室资助项目
文献收藏号 CSCD:3626082

参考文献 共 17 共1页

1.  MOORE R. Physico-chemical effects on the behaviour of a coastal mudslide. GEOTECHNIQUE,1996,46(2):259-278 被引 4    
2.  JABOYEDOFF M. The effect of weathering on Alpine rock instability. QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY,2004,37(2):95-103 被引 6    
3.  SHUZUI H. Process of slip-surface development and formation of slip-surface clay in landslide in Tertiary volcanic rocks,Japan. Engineering Geology,2001,61(4):199-219 被引 26    
4.  SHUZUI H. Landsliding of ignimbrite subject to vapor-phase crystallization in the Shirakawa pyroclastic flow,northem Japan. Engineering Geology,2002,66(1/2):111-125 被引 2    
5.  EGASHIRA K. Colloid-chemical and mineralogical differences of smectites taken from argillized layers,both from within and outside the slip surfaces in the Kamenose landslide. Applied Clay Science,1988,3(3):253-262 被引 1    
6.  MOON V G. Microstructure controls on the geomechanical behaviour of ignimbrite. Engineering Geology,1993,35(1/2):19-31 被引 4    
7.  H(U)RLIMANN M. Characterisation of a volcanic residual soil and its implications for large landslide phenomena:application to Tenerife,Canary Islands. Engineering Geology,2001,59(1/2):115-132 被引 1    
8.  APPELO C A J. Geochemistry,groundwater and pollution,1999 被引 1    
9.  杨贤为. 长江三峡库区酸雨分布特征分析. 气象,2002,28(10):14-18 被引 6    
10.  MITCHELL J K. Fundamentals of soil behavior(3rd edition),2005 被引 3    
11.  BRINKMAN R. Clay transformation:aspects of equilibrium and kinetics. Soil Chemistry B.Physico-chemical Models,1976:433-457 被引 1    
12.  GRIMALDI C. Behaviour of chemical solutes during a Storm in a rainforested headwater catchment. Hydrological Processes,2004,18(1):93-106 被引 1    
13.  AMRAM K. The combined effect of pH and temperature on smectite dissolution rate under acidic conditions. Geochimica et Cosmochimica Acta,2005,69(10):2535-2546 被引 6    
14.  HUECKEL T. Water-mineral interaction in hygro-mechanics of clays exposed to environmental loads:a mixture theory approach. Canadian Geotechnical Journal,1992,29(6):1071-1086 被引 10    
15.  HUECKEL T. Reactive plasticity for clays during dehydration and rehydration.part 1:concepts and option. Intemational Journal of Plasticity,2002,18(31):281-312 被引 5    
16.  HU L B. Creep of saturated materials as a chemically enhanced rate dependent damage process. Intemational Journal for Numerical and Analytical Methods in Geomechanics,2007,31(14):1537-1565 被引 1    
17.  KOHLER S J. An experimental study of illite dissolution kinetics as a function of pH from 1.4 to 12.4 and temperature from 5℃to 50℃. Geochimica et Cosmochimica Acta,2003,67(191):3583-3594 被引 5    
引证文献 16

1 刘剑 水土化学作用对土体黏聚力的影响--以蒙脱石-石英砂重塑土为例 岩土力学,2017,38(2):419-427,434
被引 6

2 伍艳 总磷对黏土物理力学性质影响的试验研究 岩土力学,2014,35(10):2823-2830
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