[1]张 辉,王铁行,罗 扬,等.浅层黄土冬季温度场的变化规律研究?[J].西安建筑科技大学学报:自然科学版,2015,47(02):245-0249.[doi:10.15986/j.1006-7930.2015.02.017]
　ZHANG Hui,WANG Tiehang,LUO Yang,et al.Study on temperature field variation rule of shallow loess in winter[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2015,47(02):245-0249.[doi:10.15986/j.1006-7930.2015.02.017]
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浅层黄土冬季温度场的变化规律研究?()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
47
期数:
2015年02期
页码:
245-0249
栏目:
出版日期:
2015-04-28

文章信息/Info

Title:
Study on temperature field variation rule of shallow loess in winter
文章编号:
1006-7930(2015)02-0245-05
作者:
张 辉1; 王铁行2; 罗 扬2; 许 健2
（1. 西安科技大学建筑与土木工程学院，陕西 西安 710054；2. 西安建筑科技大学土木工程学院，陕西西安710055）
Author(s):
ZHANG Hui1;  WANG Tiehang2;  LUO Yang2;  XU Jian2
( 1. School of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an 710054, China; 2.School of Civil Engineering, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China )
关键词:
季节冻土区; 浅层黄土; 温度场; 数值分析
Keywords:
seasonal frozen ground;  shallow loess;  temperature field;  numerical analysis
分类号:
TU445
DOI:
10.15986/j.1006-7930.2015.02.017
文献标志码:
A
摘要:
通过季节冻土区浅层黄土现场温度测试，研究了冬季浅层黄土温度场的变化规律．测试得出：较深处温度变化在冬季过后气温回升时有滞后性；地面温度日变化幅度最大，最大峰值温度出现在下午2时左右，且随着深度增加，出现峰值温度的时间逐渐向后推移；土体温度的日变化随深度的增加逐渐减小，超过30 cm可不考虑温度日变化；给出了非饱和黄土温度场的计算方法，总结阐述适用于渭北旱塬浅层土温度场计算参数的选取，比较了渭北旱塬彬县的计算结果和实测结果，验证了该数值计算方法及参数取值的合理性；进一步模拟渭北旱塬不同气温，讨论了最大冻深的变化规律，并拟合得到了渭北旱塬最大冻深与气温的关系式．
Abstract:
Through field tests of shallow loess in seasonal frozen ground, temperature field variation in shallow loess is studied. Testing results show that temperature changes of deeper soil lags when temperatures rise after the winter. Temperature variation range of the ground surface is the largest. Maximum peak temperature appears at 14:00 or so. The peak temperature goes gradually backwards in time as the depth increases. The diurnal variation of the soil temperature decreased as the depth increases without con-sidering temperature diurnal variation when the depth is more than 30 cm. A numerical model of temperature of unsaturated loess was given, and parameters of the model which applies to the Weibei upland were summarized. The comparison of calculation results with the tests results of Bin country in the Weibei upland indicates that the numerical calculation method is reasonable. Simulating different air temperatures in the Weibei upland, the changing law of the maximum frost depth was discussed, and the relationship between the maximum frost depth and air temperature in the Weibei upland was obtained by fitting.

参考文献/References:

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相似文献/References:

[1]张 辉,王铁行,罗 扬.冬季温度对浅层黄土水分场的影响研究[J].西安建筑科技大学学报:自然科学版,2013,45(06):842.[doi:10.15986/j.1006-7930.2013.06.015]
　ZHANG Hui,WANG Tie-hang,LUO Yang.Influence of winter temperatures on water field in shallow loess[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2013,45(02):842.[doi:10.15986/j.1006-7930.2013.06.015]

备注/Memo

备注/Memo:
收稿日期：2013-08-12 修改稿日期：2015-04-29 基金项目：国家自然科学基金项目(51078309, 51208409)；陕西省教育厅专项科研计划项目(12JK0914)作者简介：张辉(1986-)，男，博士，讲师，主要从事黄土及冻土工程理论及实践研究．E-mail：0107zhanghui@163.com
更新日期/Last Update: 2015-09-01