马兰黄土渗气率与饱和渗透系数的关系研究

利用改进的ZC-2015型渗气仪和TST-55型渗透仪进行马兰黄土渗气和饱和渗透试验,确定稳定渗气率对应的稳定渗径,进而探讨渗气率ks和饱和渗透系数K。的关系。研究结果表明:ks不仅能描述非饱和土孔隙和结构特征,也能用于预测kw气体渗气率随着渗径的增大而减小,最终趋于稳定,原状和重塑黄土的稳定渗径均约8eln。ks和kw间呈明显的双对数线性关系,不同深度的原状风干黄土和不同粒组的重塑土的l酚。和lgKw间的相关性都比较明显,但原状风干黄土和重塑土之间的拟合公式有很大差异。另外,黏粒含量较高时,重塑土拟合直线的斜率口和截距n明显增大。不同含水率下,重塑土拟合公式有很大的差异,当含水率较大时,随着...

Full description

Saved in:
Bibliographic details
Volume: 44
Main Author: 刘锦阳;李喜安;简涛;郭泽泽
Format: Journal Article
Language: Chinese
Place of publication: 国土资源部岩土工程开放研究实验室,陕西西安710054 2017
长安大学地质工程与测绘学院,陕西西安,710054%长安大学地质工程与测绘学院,陕西西安710054
published in: 水文地质工程地质 Vol. 44; no. 6; pp. 154 - 162
Data of publication: 2017
ISSN: 1000-3665
Alternate Title: A study of the relationship between gas permeability and saturated coefficient of permeability of the Malan loess
Classification Codes:
Bibliography: LIU Jinyang1 , LI Xi' an1,2, JIAN Tao1 , GUO Zezel ( 1. School of Geological Engineering and Geomatics, Chang' an University, Xi' an, Shaanxi 710054, China ; 2. Open Research Laboratory of Geotechnical Engineering, Ministry of Land and Resources, Xi'an, Shaanxi 710054, China)
11-2202/P
gas permeability; stable permeability diameter; saturated permeability coefficient; double-logarithmic linear relationship; Malan loess; content of day particles
A series of gas and saturated penetration tests for the Malan loess are conducted by using the improved ZC-2015 air permeameter and TST-55 permeameter. We firstly determine the stable permeability diameter of the corresponding ka, and then explore the relationship between air permeability ka and saturation coefficient of permeability Kw. The research results show that ka not only describes the pore and structural characteristics of unsaturated soils, but also can be used to predict Kw. ka decreases with the increasing permeability diameter, and ultimately this trend becom
Subjects:
Online Access: available in Bonn?
Database: 中文科技期刊数据库
中文科技期刊数据库-CALIS站点
中文科技期刊数据库-7.0平台
中文科技期刊数据库-自然科学
中文科技期刊数据库- 镜像站点
Wanfang Data Journals - Hong Kong
WANFANG Data Centre
Wanfang Data Journals
万方数据期刊 - 香港版
China Online Journals (COJ)
China Online Journals (COJ)
Database information Databases - DBIS