[1]叶万军,刘 宽,董西好,等.干湿循环下重塑黄土水分迁移试验[J].西安科技大学学报,2018,(06):937-944.[doi:10.13800/j.cnki.xakjdxxb.2018.0609]
 YE Wan-jun,LIU Kuan,DONG Xi-hao,et al.Moisture transfer test of remolded loess under drying-wetting cycle[J].Journal of Xi'an University of Science and Technology,2018,(06):937-944.[doi:10.13800/j.cnki.xakjdxxb.2018.0609]
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干湿循环下重塑黄土水分迁移试验(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2018年06期
页码:
937-944
栏目:
出版日期:
2018-11-30

文章信息/Info

Title:
Moisture transfer test of remolded loess under drying-wetting cycle
文章编号:
1672-9315(2018)06-0937-08
作者:
叶万军1刘 宽1董西好1李 倩2王 岩1
(1.西安科技大学 建筑与土木工程学院,陕西 西安 710054; 2.中国铁路设计集团有限公司 工程经济设计研究院,天津 300124)
Author(s):
YE Wan-jun1LIU Kuan1DONG Xi-hao1LI Qian2WANG Yan1
(1.College of Civil and Architectural Engineering,Xi'an University of Science and Technology,Xi'an 710054,China; 2.China Railway Design Group Co.,Ltd.,Institute of Engineering Economic Design,Tianjin 300124,China)
关键词:
干湿循环 重塑黄土 水分迁移 高填方工程 含水率 湿润峰
Keywords:
drying-wetting cycles remolding loess moisture transfer high filling engineering moisture content wet peak
分类号:
TU 411
DOI:
10.13800/j.cnki.xakjdxxb.2018.0609
文献标志码:
A
摘要:
黄土地区高填方工程改变地下原有给排水体系,土体长期处于干湿循环状态引发系列工程病害。为了阐明不同干湿条件下重塑黄土水分迁移规律,在干湿环境下对初始干密度和含水率不同的土样进行了水分迁移试验,结果表明:土体在干湿环境下,水分迁移导致含水率变化呈径向分区分布,上部土体含水率略低于下部; 减湿过程,水分不断迁移,随迁移高度的增加,含水率分布逐渐稳定; 干湿次数增多,土体持水能力弱化,水分上移速度减慢,湿润峰爬升的最大高度降低; 土体初始干密度越小,湿润峰推进速度越快; 初始含水率越大,水分迁移速率越快,但稳定后,土体最终含水率差异不大,并且随着距底板高度的增加呈下降趋势; 干湿环境下水分迁移也受水分重分布及土颗粒结构重组等多方面的影响,初始含水率和干湿循环次数不同,主导因素也不同,土体水分迁移规律呈现出相应的多样化特征。
Abstract:
The high fill project in loess area changes the original underground water supply and drainage system,and a series of Engineering diseases are caused by the long-term drying-wetting cycle of soil.In order to clarify the law of water migration in remolded loess under different drying-wetting conditions,the soil samples with different initial dry density and moisture content were tested under drying-wetting conditions.During the process of moisture reduction,the water content migrates continuously,and the distribution of water content becomes stable gradually with the increase of the height of moisture migration; with the increase of the number of times of drying and wetting,the water holding capacity of the soil decreases,the velocity of water moving up slows down,and the maximum height of wetting peak climbing decreases; the smaller the initial dry density of the soil,the faster the advance speed of wetting peak; the larger the initial water content,the faster the water content.The faster the migration rate is,but after stabilization,the final water content of the soil is not very different,and it tends to decrease with the increase of the height from the floor.Water migration in drying-wetting environment is also affected by water redistribution and soil particle structure reorganization,the initial water content and the number of drying-wetting cycles are different,and the dominant factors are different.The law of water migration showed different characteristics.

参考文献/References:


[1] 王铁行,李 宁,谢定义.非饱和黄土重力势、基质势和温度势探讨[J].岩土工程学报,2004,26(5):715-718. WANG Tie-hang,LI Ning,XIE Ding-yi.Gravitational potential, matrix suction and thermal potential of unsaturated loess soil[J].Chinese Journal of Geotechnical Engineering,2004,26(5):715-718.
[2]王铁行,李 宁,谢定义.土体水热力耦合问题研究意义、现状及建议[J].岩土力学,2005,26(3):488-493. WANG Tie-hang,LI Ning,XIE Ding-yi.Necessity and means in research on soil coupled heat-moisture-stress issues[J].Rock and Soil Mechanics,2005,26(3):488-493.
[3]Harlan R L,Nixon J F.Ground thermal regime,geotech.eng.for cold regions[J].Geotechnique,1979,15(2):103-108.
[4]Pham H,Fredlund D G,Barbour S L.A study of hysteresis models for soil-water characteristic curves[J].Canadian Geotechnical Journal,2005,42(6):1548-1568.
[5]Mualem Y,Beriozkinn A.General scaling rules of the hysteretic water retention function based on Mualem's domain theory[J].European Journal of Soil Science,2009,60(4):652-661.
[6]Deb Sanjit K,Shukla Manoj K,Sharma Parmodh,et al.Coupled liquid water,water vapor,and heat transport simulations in an unsaturated zone of a sandy loam field[J].Soil Science,2011,176(8):387-398.
[7]Heitman J L,Horton R,Ren T,et al.A test of coupled soil heat and water transfer prediction under transient boundary temperatures[J].Soil Society of America Journal,2008,72(5):1197-1207.
[8]Li X,Zhang L M,Fredlund D G.Wetting front advancing column test for measuring unsaturated hydraulic conductivity[J].Canadian Geotechnical Journal,2009,46(12):1431-1445.
[9]叶万军,刘忠祥,杨更社,等.温度变化条件下重塑黄土水分迁移试验[J].煤田地质与勘探,2017,45(4):126-130. YE Wan-jun,LIU Zhong-xiang,YANG Geng-she,et al.Test of water migration of remolded loess under temperature variation[J].Coal Geology and Exploration,2017,45(4):126-130.
[10]杨更社,魏 尧,田俊峰,等.冻融循环对结构性黄土构度指标影响研究[J].西安科技大学学报,2015,35(6):675-681. YANG Geng-she,WEI Yao,TIAN Jun-feng,et al.Effect of the freeze-thaw cycles on structural loess structure index[J].Journal of Xi'an University of Science and Technology,2015,35(6):675-681.
[11]赵明华,刘小平,彭文祥.水膜理论在非饱和土中吸力的应用研究[J].岩土力学,2007,28(7):1323-1327. ZHAO Ming-hua,LIU Xiao-ping,PENG Wen-xiang.Application of aqueous film theory to study of unsaturated soil's suction[J].Rock and Soil Mechanics,2007,28(7):1323-1327.
[12]肖泽岸,赖远明,尤哲敏.单向冻结过程中NaCl盐渍土水盐运移及变形机理研究[J].岩土工程学报,2017,39(11):1992-2001. XIAO Ze-an,LAI Yuan-ming,YOU Zhe-min.Water and salt migration and deformation mechanism of sodium chloridesoil during unidirectional freezing process[J].Chinese Journal of Geotechnical Engineering,2007,39(11): 1992-2001.
[13]宋存牛,王选仓.季节冻土区风积沙土路基冻结过程中水热迁移数值分析[J].冰川冻土,2007,29(6):997-1003. SONG Cun-niu,WANG Xuan-cang.Numerical analysis of coupled moisture and heat transfer within a freezing aeolian sandy embankment in seasonally frozen soil regions[J].Journal of Glaciology and Geocryology,2007,29(6):997-1003.
[14]黄大中,谢康和,王玉林,等.有限区域水位下降引发的软土层三维轴对称固结解析解[J].中南大学学报(自然科学版),2014,45(3):811-818. HUANG Da-zhong,XIE Kang-he,WANG Yu-lin,et al.Analytical solution for axially symmetric consolidation of soft soil layer induced by drawdown of water table in a finite region[J].Journal of Central South University(Science and Technology),2014,45(3):811-818.
[15]李彦龙,王 俊,王铁行.温度梯度作用下非饱和土水分迁移研究[J].岩土力学,2016,37(10):2839-2844. LI Yan-long,WANG Jun,WANG Tie-hang.Moisture migration of unsaturated soil due to thermal gradients[J].Rock and Soil Mechanics,2016,37(10):2839-2844.
[16]刘小军,闫玉闯,罗 扬.非饱和黄土水分迁移规律及迁移量的试验研究[J].西安建筑科技大学学报(自然科学版),2015,47(1):56-61. LIU Xiao-jun,YAN Yu-chuang,LUO Yang.Experimental research on the transfer'law of water and transferring quantity in unsaturated loess[J].Journal of Xi'an University of Architecture and Technology(Natural Science Edition),2015,47(1):56-61.
[17]李述训,南卓铜,赵 林.冻融作用对系统与环境间能量交换的影响[J].冰川冻土,2002,24(2):109-115. LI Shu-xun,NAN Zhuo-tong,ZHAO Lin.Impact of freezing and thawing on energy exchange between the system and environment[J].Journal of Glaciology and Geocryology,2002,24(2):109-115.
[18]赵跃中,杨柳悦,穆兴民,等.黄土中渗流水潜蚀特征研究[J].灌溉排水学报,2015,34(10):37-39. ZHAO Yue-zhong,YANG Liu-yue,MU Xing-min,et al.Characteristic of sub-ground erosion in the loess[J].Journal of Irrigation and Drainage,2015,34(10): 37-39.
[19]张 辉,王铁行,罗 扬.冻结作用下非饱和黄土水分迁移试验研究[J].工程地质学报,2015,23(1):72-77. ZHANG Hui,WANG Tie-hang,LUO Yang.Experimental study on moisture migration of unsaturated loess under freezing effect[J].Journal of Engineering Geology,2015,23(1): 72-77.
[20]刘巍然,高江平.压实黄土路基中水分迁移的数值模拟[J].长安大学学报(自然科学版),2006,26(4):5-7. LIU Wei-ran,GAO Jiang-ping.Numerical modelling on water migration in loess subgrade[J].Journal of Chang'an University(Natural Science Edition),2006,26(4):5-7.
[21]李 宁,陈 波,陈飞熊.寒区复合地基的温度场、水分场与变形场三场耦合模型[J].土木工程学报,2003,36(10):66-71. LI Ning,CHEN Bo,CHEN Fei-xiong.Heat-moisture-deformation coupled model for composite foundation in cold zone[J].China Civil Engineering Journal,2003,36(10): 66-71.
[22]毛雪松,侯仲杰,孔令坤.人工填筑路基土体水分运动参数的试验[J].长安大学学报(自然科学版),2010,30(5):17-21. MAO Xue-song,HOU Zhong-jie,KONG Ling-kun.Experiments on motion parameters of soil moisture in artificial filling subgrade[J].Journal of Chang'an University(Natural Science Edition),2010,30(5):17-21.
[23]赵 刚,陶夏新,刘 兵.重塑土冻融过程中水分迁移试验研究[J].中南大学学报(自然科学版),2009,40(2):519-525. ZHAO Gang,TAO Xia-xin,LIU Bing.Experimental research on water migration in remoulded soil during freezing and thawing process[J].Journal of Central South University(Science and Technology),2009,(2):519-525.
[24]许淑珍,白晓红,马富丽.利用MATLAB拟合压实黄土土水特征曲线的研究[J].太原理工大学学报,2015,46(1):81-84. XU Shu-zhen,BAI Xiao-hong,MA Fu-li.Study of fitting soil-water characteristic curves for compacted loess by matlab[J].Journal of Taiyuan University of Technology,2015,46(1):81-84.

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备注/Memo

备注/Memo:
收稿日期:2018-03-10 责任编辑:李克永
基金项目:国家自然科学基金(41672305)
通信作者:叶万军(1976-),男,陕西丹凤人,博士,教授,E-mail:63451400@qq.com
更新日期/Last Update: 2018-11-15