黑方台马兰黄土固结条件下孔隙变化特征

罗浩 伍法权 常金源 许江波 包含

罗浩, 伍法权, 常金源, 许江波, 包含. 2014: 黑方台马兰黄土固结条件下孔隙变化特征. 工程地质学报, 22(5): 845-850. doi: 10.13544/j.cnki.jeg.2014.05.11
引用本文: 罗浩, 伍法权, 常金源, 许江波, 包含. 2014: 黑方台马兰黄土固结条件下孔隙变化特征. 工程地质学报, 22(5): 845-850. doi: 10.13544/j.cnki.jeg.2014.05.11
LUO Hao, WU Faquan, CHANG Jinyuan, XU Jiangbo, BAO Han. 2014: PORE CHARACTERISTICS OF MALAN LOESS UNDER COMPRESSION TEST AT HEIFANG PLATFORM. JOURNAL OF ENGINEERING GEOLOGY, 22(5): 845-850. doi: 10.13544/j.cnki.jeg.2014.05.11
Citation: LUO Hao, WU Faquan, CHANG Jinyuan, XU Jiangbo, BAO Han. 2014: PORE CHARACTERISTICS OF MALAN LOESS UNDER COMPRESSION TEST AT HEIFANG PLATFORM. JOURNAL OF ENGINEERING GEOLOGY, 22(5): 845-850. doi: 10.13544/j.cnki.jeg.2014.05.11

黑方台马兰黄土固结条件下孔隙变化特征

doi: 10.13544/j.cnki.jeg.2014.05.11
基金项目: 

中国地质调查局工作项目(1212011140001),中国地质调查局工作项目(12120113007700)资助

详细信息
    作者简介:

    罗浩,男,博士研究生,主要从事活动构造和地质灾害方面的工作. Email: hy-luo@163.com

  • 中图分类号: P64

PORE CHARACTERISTICS OF MALAN LOESS UNDER COMPRESSION TEST AT HEIFANG PLATFORM

  • 摘要: 甘肃临夏地区的黑方台由于长期的农业灌溉导致台缘滑坡频发,整个台面普遍下沉3m以上。文章通过原状黄土的增湿固结实验、压汞试验和环境扫描电镜等对黑方台顶部和底部的原状黄土进行孔隙特征的分析。黑方台顶部黄土颗粒排列极为疏松、孔隙较大、黏土含量较低。底部黄土排列较为紧密,具有一定的孔隙,黏土含量较高。顶部黄土在固结实验中,21%含水量的黄土发生孔隙比突降,黄土的微观结构强度此时迅速减小或丧失。然而底部黄土没有发生明显的突变,水敏性不强。利用压汞试验确定了黑方台顶部黄土的孔隙主要压缩区间为孔径大于100m、孔径5~20m之间; 底部黄土的孔隙主要压缩区间为孔径大于100m、孔径1~10m之间。而且孔径小于0.1m的孔隙随含水量的升高具有增加的趋势。
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出版历程
  • 收稿日期:  2014-05-30
  • 修回日期:  2014-07-31
  • 刊出日期:  2014-10-25

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