[1]王铁行,王娟娟,张龙党.冻结作用下非饱和黄土水分迁移试验研究[J].西安建筑科技大学学报:自然科学版,2012,(01):7-13,71.[doi:10.15986/j.1006-7930.2012.01.002]
 WANG Tie-hang,WANG Juan-juan,ZHANG Long-dang.Experimental research on moisture migration infreezing unsaturated loess[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2012,(01):7-13,71.[doi:10.15986/j.1006-7930.2012.01.002]
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冻结作用下非饱和黄土水分迁移试验研究()
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西安建筑科技大学学报:自然科学版[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2012年01期
页码:
7-13,71
栏目:
出版日期:
2012-02-29

文章信息/Info

Title:
Experimental research on moisture migration infreezing unsaturated loess
文章编号:
1006-7930(2012)01-0007-07
作者:
王铁行12王娟娟1张龙党1
(1.西安建筑科技大学土木工程学院,陕西 西安 710055;2.西部建筑科技国家重点实验室 筹 ,陕西 西安 710055)
Author(s):
WANG Tie-hang12 WANG Juan-juan1ZHANG Long-dang1
(1.College of Civil Engineering, Xian University of Architecture and Technology, Xian 710055,China; 2.State key Laboratory of Architecture Science and Technology in west China(XAUAT),Xian 710055,China)
关键词:
黄土含水量水分迁移冻结密度
Keywords:
loess water content moisture migration freeze density
分类号:
TU443
DOI:
10.15986/j.1006-7930.2012.01.002
文献标志码:
A
摘要:
首先自制了冻结作用导致水分迁移的试验装置,采用未设置格栅试验装置得到了液态水和气态水混合迁移结果,采用设置格栅试验装置得到了阻断液态水迁移通道情况下水分迁移结果.试验结果表明,土样密度、含水量、时间对冻结作用导致的水分迁移进程均有影响.冻结过程冻结锋面的推进使冻结区域含水量明显增大,未冻结区域含水量明显减小,冻结锋面处含水量增加最大.相对于未冻结区域水分迁移进程,水分向冻结锋面的迁移是比较缓慢的.干密度较小土样冻结区域含水量增加值小于干密度较大土样,干密度大,冻结锋面处的含水量增量相对较少.初始含水量越大,冻结锋面土体含水量增加值越大,并形成冰层.随着时间增加,冻结锋面处的含水量增加,但后期含水量随时间的增加值明显小于前期,在冻结锋面冰层形成初期,未冻结区域水分向冻结锋面迁移量大,冰层形成以后水分迁移量小.当土样初始含水量比较小时,设置格栅阻断液态水通道对冻结作用导致的水分迁移进程影响不大,向冻结锋面迁移水量主要来源于气态水迁移.当土样初始含水量比较大时,和混合迁移试验结果相比较,设置格栅阻断液态水迁移通道后向冻结锋面迁移水量明显减小
Abstract:
The test equipment is designed for measuring moisture migration in freezing unsaturated loess, using the equipment with no grill the liquid water and vapor water mixed migration results is obtained, and using the equipment with grill the moisture migration results is obtained in situation the liquid water migration channel has been blocked. Freezing the frontal advancement causes water content to increase obviously in frozen region, and freezing frontal water content increases in a big way. Opposite to moisture migration in warm region, the moisture migration to the freeze frontal area is quite slow. The increase in water content frozen region of small density loess is smaller than with the big density loess, and the freeze frontal water content increase in big density loess is relatively smaller than in small density loess. Whese initial water content is bigger, the freeze frontal water content increase in value is bigger, so is the ice layer existence. The freeze frontal water content increase along with the time in later period is smaller than earlier period. When the initial water content in loess is quite small, the mixed migration results and the establishment grill water migration results is nearly the same. This indicates that the grill blocking the liquid water migration pass has no advancement influence on moisture migration in freezing loess. When the initial water content is quite big, in comparison with the mixed migration test result, the grill is established to block the liquid water migration channel backward freeze frontal area migration water volume from reducing obviously

参考文献/References:

[1] 谢定义.试论我国黄土力学研究中的若干新趋向[J].岩土工程学报,2001,23(1):3-13.
XIE Ding-yi.Exploration of some new tendencies in research of loess soil mechanics[J].Chinese Jounal of Geotechnical Engineering,2001,23(1):3-13.
[2] SHOOP S A,BIGL S R,Moisture migration during freeze and thaw of unsaturated soils:Modeling and large scale experiments[J].Cold Regions Science and Technology,1997,25(1):33-45.
[3] 李述训,程国栋,刘继民.兰州黄土在冻融过程中水热输运实验研究[J].冰川冻土.1996,18(4):319-324.
LI Shu-xun,CHENG Guo-dong,LIU Ji-min.Experimental study on heat moisture transfer in lanzhou loess during freezing thawing processes[J].Frozen Soil Engineering,1996,18(4):319-324.
[4] NASCAR I N,HORTON R,GLOBUS A M.Thermally induced water transfer in salinnized unsaturated soil[J].Soil Science Society of American Journal,1997,61(6):1293-1298.
[5] HEITMAN J L,HORTON R,REN T.A test of coupled soil heat and water transfer prediction under transient boundary temperatures[J].Soil Science Society of America Journal,2008,72(5):1197-1207.
[6] 邵生俊,龙吉勇,杨 生.湿陷性黄土结构性变形特性分析[J].岩土力学,2006,27(10):1668-1672.
SHAO Sheng-jun,LONG Ji-yong,YANG Sheng.Analysis of structural deformation properties of collapsible loess[J].Rock and Soil Mechanics,2006,27(10):1668-1672.
[7] 党进谦,李 靖.含水量对非饱和黄土强度的影响[J].西北农业大学学报.1996,24(1):56-60.
DANG Jin-qian,LI Jing.Effect of water content on the strength of unsaturated loess[J].Acta Universitatis Agriculture Boreau-occidentalis.1996,24(1):56-60.
[8] KOK H,MCCool D K.Quantifying freeze/thaw-induced variability of soil strength[J].Transactions of the ASAE,1990,33(2):501-506.
[9] 宋春霞,齐吉琳,刘奉银.冻融作用对兰州黄土力学性质的影响[J].岩土力学,2008,29(4):1077-1080.
SONG Chun-xia,QI Ji-lin,LIU Feng-yin.Influence of freeze-thaw on mechanical properties of Lanzhou loess[J].Rock and Soil Mechanics,2008,29(4):1077-1080.
[10] 张引科,杨林德,昝会萍.非饱和土的结构强度[J].西安建筑科技大学学报:自然科学版,2003,35(1):33-36.
ZHANG Yin-ke,YANG Li-De,JI Hui-Ping.The structural strength of unsaturated soil[J].J.Xi′an Univ.of Arch.& Tech.:Natural Science Edition,2003,35(1):33-36.
[11] 王铁行,陆海红.温度影响下的非饱和黄土水分迁移问题探讨[J].岩土力学,2004,25(7):1081-1084.
WANG Tie-hang,LU Hai-hong.Moisture migration in unsaturated loess considering temperature effect[J].Rock and Soil Mechanics,2004,25(7):1081-1084.
[12] 李 宁,程国栋,徐学祖.冻土力学的研究进展与思考[J].力学进展,2001,31(1):95-102.
LI Ning,CHENG Guo-dong,XU Xue-zu.The advance and review on frozen soil mechanics[J].Advances In Mechanics,2001,31(1):95-102.
[13] 王铁行,岳彩坤,鲁 洁.连续降雨条件下黄土路基水分场数值分析[J].西安建筑科技大学学报:自然科学版,2007,39(5):593-597.
WANG Tie-hang,YUE Cai-kun,LU Jie.Numerical analysis on moisture migration in loess subgrade under rainfall[J].J.Xi′an Univ.of Arch.& Tech.:Natural Science Edition,2007,39(5):593-597.
[14] 吴青柏,沈永平,施 斌.青藏高原冻土及水热过程与寒区生态环境的关系[J].冰川冻土,2003,25(3):250-255.
WU Qing-bai,SHEN Yong-ping,SHI Bin.Relationship between frozen soil together with Its water-heat process and ecological environment in the tibetan plateau[J].Journal of Glaciology and Geocryology,2003,25(3):250-255.

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备注/Memo

备注/Memo:
收稿日期:2009-11-25 修改稿日期:2011-12-23
基金项目:国家自然科学基金资助项目(50678144)
作者简介:王铁行(1968-),男,陕西富平人,教授,主要从事黄土、冻土工程领域研究工作
更新日期/Last Update: 2015-09-01