进气值对毛细滞回内变量模型的影响

›› 2012, Vol. 33 ›› Issue (9): 2724-2728.

进气值对毛细滞回内变量模型的影响

李幻^{1, 2}，谢冰³，徐辉⁴，黄志全¹

1.华北水利水电学院资源与环境学院，郑州 450011；2.桂林理工大学广西建筑新能源与建筑节能重点实验室，广西桂林 541004； 3.洛阳理工学院土木工程系，河南洛阳 471023；4.河南省水利第一工程局，郑州 450004

收稿日期:2012-05-08 出版日期:2012-09-11 发布日期:2012-09-12
作者简介:李幻，男，1979年生，博士，讲师，主要从事多孔介质方面的研究工作
基金资助:
国家自然科学基金（No. 41140030）；郑州市创新型科技人才培育计划领军人才项目（No. 10LJRC185）；教育部留学回国人员科研启动基金；华北水利水电学院高层次人才基金项目；广西建筑新能源与建筑节能重点实验室开放基金。

Research on influence of air-entry value on capillary hysteresis internal variable model

LI Huan^{1, 2}, XIE Bing³, XU Hui⁴, HUANG Zhi-quan¹

1. College of Resources and Environmental Science, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011, China; 2. Guangxi Key Laboratory of New Energy and Building Energy Saving, Guilin University of Technology, Guilin, Guangxi 541004, China; 3. Department of Civil Engineering, Luoyang Institute of Science and Technology, Luoyang, Henan 471023, China; 4. Henan Provincial 1st Water Conservancy Engineering Bureau, Zhengzhou 450004, China

Received:2012-05-08 Online:2012-09-11 Published:2012-09-12

摘要/Abstract

摘要： 土-水特征关系是基质吸力和含水率之间的关系。进气值对起点在高饱和度区的脱湿扫描线有较大的影响。Wei等[1]提出了毛细滞回内变量模型，可以对扫描线任意滞回情况进行模拟，但该模型没有考虑进气值的影响，对起点在高饱和度区的脱湿扫描线的模拟与实际情况有一定偏差。基于毛细滞回内变量理论和传统的土-水特征关系经验模型，提出了考虑进气值影响的修正毛细滞回内变量模型。该模型可以考虑进气值对起点在高饱和度区的脱湿扫描线的影响。通过对多种土样的数值模拟计算显示，修正模型较好地解决了原模型对起点在高饱和度区的脱湿扫描线的模拟不能考虑进气值影响的缺点。

关键词: 毛细滞回内变量模型, 扫描线, 含水率

Abstract: Soil-water characteristic relationship is a function about the connection between matric suction and water content. The research shows that the air-entry value has great influence on the drying scanning curve when the starting point of the curve is near the highly saturated level. A capillary hysteresis internal variable model (HIVM) put forward by Wei Changfu is able to simulate the hysteresis characteristic of the scanning curve; but the influence of the air-entry value is neglected. There exist some deviations between the simulation of the drying scanning curve and the factual results. Based on the theory of HIVM and the empirical model about the traditional soil-water characteristic relationship, a modified HIVM is put forward. The influence of the air-entry value on the drying scanning curve whose starting point is near the highly saturated level is considered in this new model. While in drying path, the effects of air-entry value on the scanning curves that the original points at the highly saturated range is considered. According to the data from the simulation calculation to the various soil samples, in the modified HIVM, the influence of the air-entry value on the drying scanning curve is considered; so it is better than the original model.

Key words: hysteresis internal variable model, scanning curve, water content

中图分类号:

TU 411

李幻，谢冰，徐辉，黄志全 . 进气值对毛细滞回内变量模型的影响[J]. , 2012, 33(9): 2724-2728.

LI Huan , XIE Bing , XU Hui , HUANG Zhi-quan . Research on influence of air-entry value on capillary hysteresis internal variable model[J]. , 2012, 33(9): 2724-2728.

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