[1]李彦龙,张小辉.基于孔隙水赋存状态的非饱和土吸力量测分析[J].西安建筑科技大学学报(自然科学版),2019,51(03):362-368.[doi:10.15986/j.1006-7930.2019.03.009]
　LI Yanlong,ZHANG Xiaohui.Determination analysis of unsaturated soil suction based on pore water occurrence[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2019,51(03):362-368.[doi:10.15986/j.1006-7930.2019.03.009]
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基于孔隙水赋存状态的非饱和土吸力量测分析()
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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:
51
期数:
2019年03期
页码:
362-368
栏目:
出版日期:
2019-06-30

文章信息/Info

Title:
Determination analysis of unsaturated soil suction based on pore water occurrence
文章编号:
1006-7930(2019)03-0362-07
作者:
李彦龙1; 张小辉2
（1.许昌学院 土木工程学院，河南 许昌 461000；2.机械工业勘察设计研究院有限公司，陕西 西安 710043）
Author(s):
LI Yanlong1; ZHANG Xiaohui2
（1. School of Civil Engineering, Xuchang college, Hennan Xuchang 461000, China；2. China JIKAN Research Institute of Engineering Investigations and Design Co.,Ltd,Xi′an 710043, China）
关键词:
非饱和土; 孔隙水; 吸力
Keywords:
unsaturated soil;  pore water;  suction
分类号:
TU43
DOI:
10.15986/j.1006-7930.2019.03.009
文献标志码:
A
摘要:
非饱和土中孔隙水在不同含水量条件下的赋存状态各异，孔隙水的赋存状态随着土体含水量的增加可分为结合水状态、毛细角边水状态和毛细水连通状态.由不同类型的孔隙水所引起吸力的机理各不相同，对应于孔隙水的3种赋存状态，吸力可分为吸附作用力、吸附—毛细作用力和毛细作用力.吸附作用力可通过等温吸附试验确定，其试验原理和试验结果均较为明确.毛细作用力的计算原理虽较为明确，由于参数取值的困难致使难以通过理论计算获得准确的结果，但可通过高进气值材料测量.分析认为高进气材料较为适合量测毛细作用力，对高进气值材料不恰当的使用是造成土水特征曲线在低含水量段迅速上扬的主要原因.吸附—毛细作用力尚难以通过理论计算或试验获得准确的结果，该吸力在数值上介于吸附作用力和毛细作用力之间.
Abstract:
The occurrences of pore water in unsaturated soil are different with water content conditions, they were divided into bound water state, capillary edge water state and capillary water connected state with the increase of water content. The mechanisms of the different suction caused by different types of pore water were different. Corresponding to the three kinds of pore water occurrence, suction in unsaturated soil was divided into adsorption force, adsorption-capillary force and capillary force. The adsorption force can be determined by isothermal adsorption test, and the test principle and results are all clear. The calculation formula of the capillary force is explicit; however, it is difficult to obtain the accurate result by theoretical calculation due to the difficulties to obtain the parameter value. Nevertheless, the capillary force can be measured by high entry material. The results of analysis indicate that the high entry material is suitable for measuring the capillary force, and the improper use of the high entry material is the main reason for the rapid increase of the soil water characteristic curve in the low water content section. It is difficult to obtain accurate results of adsorption capillary force by theoretical calculation or experiment. The value of adsorption capillary force is between the adsorption force and the capillary force.

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相似文献/References:

[1]李彦龙,汪留松,王铁行.基质势梯度作用下非饱和土水分迁移研究[J].西安建筑科技大学学报(自然科学版),2017,49(06):847.[doi:10.15986/j.1006-7930.2017.06.012]
　LI Yanlong,WANG Liusong,WANG Tiehang.Moisture migration of unsaturated soil due to matric suction gradients[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2017,49(03):847.[doi:10.15986/j.1006-7930.2017.06.012]

备注/Memo

备注/Memo:
收稿日期:2017-05-22修改稿日期:2019-05-06
基金项目:河南省重点研发与推广专项（科技攻关）项目（No.192102310220）；河南省高等学校重点科研项目（No.19A560019）
第一作者:李彦龙（1985-），男，博士，讲师，主要从事岩土工程的教学和科研工作.E-mail：liyanlong1229@163.com
更新日期/Last Update: 2019-07-21