土工基础

›› 2012, Vol. 26 ›› Issue (4): 123-125.

• 工程实录 • 上一篇    下一篇

贵州玄武岩残积土现场渗透试验研究

 田小波1，刘鑫2   

  1. 1.贵州省交通规划勘察设计研究院股份有限公司，贵阳 550001;2.河南省煤田地质局资源环境调查中心，郑州 450003
  • 收稿日期:2012-04-21 出版日期:2012-08-20 发布日期:2012-09-07
  • 作者简介:田小波(1973-)，男，高级工程师，研究方向为公路勘察与施工技术研究与管理。
  • 基金资助:

    交通部西部交通建设科技项目（2009 318 802 074）

Insitu Permeability Tests in Guizhou Basalt Residual Soils

TIAN Xiaobo1, LIU Xin2   

  1. 1.Guizhou Transportation Planning Survey & Design Academy Co., Ltd. Guiyang, 550001;
    2.Henan Provincial Coalfield Geology Bureau, Zhengzhou 450003
  • Received:2012-04-21 Online:2012-08-20 Published:2012-09-07

摘要： 针对毕威高速公路赫章境内玄武岩残积土边坡工程设计要求，选取不同风化程度的玄武岩残积土进行现场双环法注水渗透试验。试验结果表明：棕红色残积土的渗透系数大于黄褐色残积土，且风化程度较强的边坡两侧残积土的渗透系数略大于风化程度较弱的边坡中部残积土，且渗透系数随残积土密实度的增大而呈递减趋势。

关键词: 玄武岩残积土, 双环注水, 渗透性, 密实度

Abstract: Insitu permeability tests in the basalt residual soils were required in the Biwei Expressway in Guizhou. The doublering permeability method was selected for the basalt saprolite soils with different degrees of weathering. The test results demonstrate that the coefficient of permeability of the reddish brown residual soil is greater than that of yellowish brown soil. The colluvial soils with large degrees of weathering at both sides of the natural slope are slightly more permeable than soils with less degrees of weathering in the middle. The permeability decreases with the increase of the unit weight of the residual soils.

Key words: Basalt Residual Soil, DoubleRing Method, Permeability, Unit Weight