| 黏粒含量对泥石流源区砾石土体强度影响的实验研究 |
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| 引用本文： | 杨成林,陈宁生,邓明枫,周伟.黏粒含量对泥石流源区砾石土体强度影响的实验研究[J].成都理工大学学报(自然科学版),2011,38(5):522-528. |
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| 作者姓名： | 杨成林 陈宁生 邓明枫 周伟 |
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| 作者单位： | 1. 中国科学院水利部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,成都610041;中国科学院研究生院,北京100049
2. 中国科学院水利部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,成都610041 |
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| 基金项目： | 中国科学院知识创新工程项目(KZCX2-YW-332); 水利部科技推广计划项目(TG1062) |
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| 摘 要： | 泥石流源区砾石土的黏粒颗粒含量对砾石土孔隙水压力和强度的影响是泥石流形成机理中的重要问题之一.采用室内静三轴实验研究云南东川蒋家沟支沟大凹子沟源区的砾石土体强度、孔隙水压力、湿陷性与黏粒颗粒含量的关系,发现黏粒的质量分数在3.75％～7.50％范围内的砾石土试样湿陷性较大;黏粒的质量分数为5％左右的砾石土湿陷性最大；黏...
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| 关 键 词： | 泥石流 砾石土 黏粒含量 最大剪应力 孔隙水压力 |
Experimental study of the influence of the clay content on the gravel soil mass from the upstream area of a debris flow |
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| YANG Cheng-lin,CHEN Ning-sheng,DENG Ming-feng,ZHOU Wei.Experimental study of the influence of the clay content on the gravel soil mass from the upstream area of a debris flow[J].Journal of Chengdu University of Technology: Sci & Technol Ed,2011,38(5):522-528. |
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| Authors: | YANG Cheng-lin CHEN Ning-sheng DENG Ming-feng ZHOU Wei |
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| Institution: | YANG Cheng-lin1,2,CHEN Ning-sheng1,DENG Ming-feng1,ZHOU Wei1,2 1.Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Key Lab of Mountain Hazards and Surface Processes,Chengdu 610041,China,2.Graduate University of Chinese Academy of Sciences,Beijing 100049 |
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| Abstract: | The clay content of the gravel soil from the upstream area of a debris flow has significant influence on the pore pressure and shearing strength.This is a problem that has to be solved in studying the debris flow initiation mechanism.Based on the three-axial experiment,this paper studies the relationship among the shearing strength,pore pressure,collapsibility and clay content of the sample from Jiangjia ravine of Dongchuan in Yunnan of China.The experiment indicates that(1) when the clay content is 3.75%~7... |
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| Keywords: | debris flow gravel soil clay content maximal shearing strength pore water pressure |
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