干密度对黄土渗透系数的影响

马亚维; 谌文武; 毕骏; 郭桂红; 焦贵德

doi:10.11779/CJGE2018S1027

干密度对黄土渗透系数的影响 English Version

马亚维^{1, 2},
谌文武^1,2, ,,
毕骏^{1, 2},
郭桂红^{1, 2},
焦贵德^{1, 2}

1. 兰州大学土木工程与力学学院,甘肃兰州 730000;
2. 兰州大学西部灾害与环境力学教育部重点实验室,甘肃兰州 730000

基金项目: 国家重点基础研究发展计划（“973”计划）项目（2014CB744701）; 兰州大学中央高校基本科研业务费（lzujbky-2014-5）

详细信息

作者简介:
马亚维(1980- ),女,陕西户县人,博士研究生,主要从事岩土工程、非饱和土力学方面的研究和教学工作。E-mail: mayw@lzu.edu.cn。

通讯作者:
谌文武，E-mail：sungp@lzu.edu.cn

中图分类号: TU47
计量
- 文章访问数: 272
- HTML全文浏览量: 9
- PDF下载量: 170
出版历程
- 收稿日期: 2017-06-10
- 发布日期: 2018-08-24

Influence of dry density on coefficient of permeability of unsaturated loess

MA Ya-wei^{1, 2},
CHEN Wen-wu^1,2, ,,
BI Jun^{1, 2},
GUO Gui-hong^{1, 2},
JIAO Gui-de^{1, 2}

1. School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China;
2. Key Laboratory of Mechanics on Disaster and Environment in Western China, Lanzhou University, Ministry of Education, Lanzhou 730000, China

摘要

摘要: 非饱和渗透系数是研究非饱和土入渗规律的重要参数,同时也是研究边坡失稳和地基浸湿变形的重要基础。本文采用变水头法测量原状黄土和重塑黄土饱和渗透系数,基于Childs & Collis-Geroge模型,结合土水特征曲线和饱和渗透系数,详细探讨了原状黄土、不同干密度非饱和重塑黄土体积含水率与渗透系数的关系和规律。结果表明,原状黄土的饱和渗透系数远小于重塑样,重塑土样饱和渗透系数随着干密度的增大而减小;黄土非饱和渗透系数减小趋势随着干密度增大而减小,但在残余含水率附近,不同干密度下试样的渗透性基本相同。
- 非饱和土 /
- 渗透系数 /
- Childs & /
- Collis-Geroge模型 /
- 干密度 /
- 体积含水率
Abstract: The unsaturated permeability coefficient is one of the important parameters in the researches on the rules of unsaturated soil infiltration and the important basis of the researches on the instability of slopes and humidification deformation of foundations. The variable water head method is used to measure the permeability coefficients of undisturbed soil and remolded saturated loess. Combined with the soil-water characteristic curve and the saturated permeability coefficient, based on the Childs & Collis-George model, remolded unsaturated loess with different dry densities and the relationships between coefficient of permeability and volumetric moisture content as well as the rules of undisturbed loess are discussed. The results show that the saturated coefficient of permeability of the remolded loess samples is greater than that of the undisturbed loess samples, and it decreases with the increase of the dry density. The unsaturated coefficient of permeability of loess coefficient decreases as the moisture content is reduced, and the decrease trend decreases as the dry density increases. However, under about the residual moisture content, the permeability of the samples with different dry densities is basically identical.
- unsaturated soil /
- coefficient of permeability /
- Childs & /
- Collis-George model /
- dry density /
- volumetric moisture content

HTML全文

参考文献(26)

[1]	FREDLUND D G.非饱和土土力学[M]. 陈仲颐, 张在明, 陈愈炯, 等译. 北京: 中国建筑工业出版社, 1997. (FREDLUND D G.Unsaturated soil mechanics[M]. CHEN Zhong-yi, ZHANG Zai-ming, CHEN Yu-jiong, et al, trans. Beijing: China Architecture and Building Press, 1997. (in Chinese))
[2]	陈正汉. 非饱和土与特殊土力学的基本理论研究[J]. 岩土工程学报, 2014, 36(2): 201-272. (CHEN Zheng-han.On basic theories of unsaturated soil and special soil[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(2): 201-272. (in Chinese))
[3]	蒋中明, 熊小虎, 曾铃. 基于FLAC^3D平台的边坡非饱和降雨入渗分析[J]. 岩土力学, 2014, 35(3): 855-861. (JIANG Zhong-ming, XIONG Xiao-hu, ZENG Ling.Based on FLAC^3D platform unsaturated slope rainfall infiltration analysis[J]. Rock and Soil Mechanics, 2014, 35(3): 855-861. (in Chinese))
[4]	NG C W W, SHI Q. A numerical investigation of the stability of unsaturated soil slopes subjected to transient seepage[J]. Computers and Geotechnics, 1998, 22(1): 1-28.
[5]	朱伟, 程南军, 陈学东, 等. 浅谈非饱和渗流的几个基本问题[J]. 岩土工程学报, 2006, 28(2): 235-240. (ZHU wei, CHENG Nan-jun, CHEN Xue-dong, et al. Introduction to several basic issues of unsaturated seepage flow[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(2): 235-240. (in Chinese))
[6]	MEHMET M B.Investigation of stability of slopes under drawdown conditions[J]. Computers and Geotechnics, 2007, 34(2): 81-91.
[7]	MITCHELL R J.Matrix suction and diffusive transport in centrifugemodels[J]. Canadian Geotechnical Journal, 1994, 31(3): 357-363.
[8]	BRUTSAERT W.Some methods of calculating unsaturated permeability[J]. American Society of Agricultural Engineers, 1967, 10(3): 400-404.
[9]	MUALEMY, DAGAN F. Hydraulic conductivity of soil: Unified approach to the statistical models[J]. Soil Science Society of America1978, 42(3): 392-ss395.
[10]	SNYDER V.Statistical hydraulic conductivity models and scaling of capillary phenomena in porous media[J]. Soil Science Society of America, 1996, 60(3): 771-774.
[11]	CRAWFORD J W.The relationship between structure and the hydraulic conductivity of soil[J]. European Journal of Soil Science, 2010, 45(45): 493-502.
[12]	PAPE H, RIEPE L, SCHOPPER J R.Interlayer conductivity of rocks-a fractal model of interface irregularities for calculating interlayer conductivity of natural porous mineral systems[J]. Colloids & Surfaces, 1987, 27(4): 97-122.
[13]	BOUMA J, LANEN H A J. Transfer functions and threshold values: from soil characteristics to land qualities[J]. Quantified Land Evaluation, 1986, 27(2): 106-110
[14]	VAN GENUCHTEN M T, LEIJ F J. On estimating the hydraulic properties of unsaturated soils[C]// Proc Int Worksh. on Indirect Methods of Estimating the Hydraulic Properties of Unsaturated Soils. California: University of California, Riverside, 1992: 1-14.
[15]	王成华, 李广信, 王真. 确定非饱和土渗透系数的间接方法简评[C]// 中国土木工程学会第九届土力学及岩土工程学术会议论文集(上册), 2003: 347-350. (WANG Cheng-hua, LI Guang-xin, WANG Zhen.Indirect method to determine the permeability coefficient of unsaturated soil profile[C]// China Civil Engineering Society of the 9th Academic Conference on Soil Mechanics and Geotechnical Engineering, 2003: 347-350. (in Chinese))
[16]	TOLEDO P G, NOVY R A, DAVIS H T, et al.Hydraulic conductivity of porous media at low water content[J]. Soil Science Society of America Journal, 1990, 54(3): 673-679.
[17]	BROADBRIDGE P, WHITE I.Constant rate rainfall infiltration: a ersatile nonlinear model 1. analytic solution[J]. Water Resources Research, 1988, 24(1): 145-154
[18]	AGUS S S, LEONG E C, SCHANZ T.Assessment of statistical model for indirect determination of permeability function from soil-water characteristic curve[J]. Géotechnique, 2003, 53(2): 279-282.
[19]	SAMINGAN A S.Mechanical and hydraulic properties of compacted tropical residual soils[J]. Polymer Korea, 2009, 33(33): 97-103.
[20]	GARG N K, GUPTA M.Assessment of improved soil hydraulic parameters for soil water content simulation and irrigation scheduling[J]. Irrigation Science, 2015, 33(4): 247-264.
[21]	KUNZE R J, UEHARA G, GRAHAM K.Factors important in the calculation of hydraulic conductivity[J]. Soil Science Society of America Proceedings, 1968, 32(6): 760-765.
[22]	ASSOULINE S.Modeling the relationship between soil bulk density and the water retention curve[J]. Vadose Zone Journal, 2006, 5(2): 554-563.
[23]	姚志华, 陈正汉, 黄雪峰, 等. 非饱和原状和重塑Q₃黄土渗水特性研究[J]. 岩土工程学报, 2012, 34(6): 1020-1027. (YAO Zhi-hua, CHEN Zheng-han, HUANG Xue-feng, et al.Hydraulic conductivity of unsaturated undisturbed and remolded Q₃ loess[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(6): 1020-1027. (in Chinese))
[24]	王铁行, 卢靖, 张建锋. 考虑干密度影响的人工压实非饱和黄土渗透系数的试验研究[J]. 岩石力学与工程学报, 2006, 25(11): 2364-2368. (WANG Tie-hang, LU Jing, ZHANG Jian-feng.Considering the influence of dry density of artificial compaction coefficient of permeability of unsaturated loess experimental study[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(11): 2364-2368. (in Chinese))
[25]	CHILDS E C, COLLIS-GEORGE G N. The permeability of porous materials[C]// Proceedings of the Royal Society of London Series A. London, 1950.
[26]	VAN GENUCHTEN M T.A closed-form equation for predicting the hydraulic conductivity for unsaturated soils[J]. Soil Science Society of America Journal, 1980, 44(5): 892-898.

施引文献(2)

期刊类型引用(2)

1.	王卫东，高文生，龚维明，林毅峰，刘永超，吴江斌. 基础工程技术的发展与创新. 土木工程学报. 2025(02): 97-117 . 百度学术
2.	舒方法，杨三元，陈韬. 海上风电工程大型构件姿态监测系统开发与应用研究. 港口航道与近海工程. 2024(02): 80-84 . 百度学术