采用TDR水分计研究非饱和黄土入渗及自重湿陷变形规律

Abstract
Figure/Table
References (16)
Related Citation (15)

Download: PDF (2248 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract By large-scale in-situ water immersion test in the field of the collapsible loess under over burden pressure，There are TDR moisture probes embedded in different positions and depths，in order to measure the data about infiltration in vertical and horizontal directions. The law of infiltration and collapsible deformation under over burden pressure and their relationships after soaking are researched，the results show that：(1) The law about water infiltration in the soil is the first big pore，then penetrating down to enlarge saturated；(2) In water infiltration process，soil which is above depths of 22.5–25.0 m is more vulnerable to collapse，and soil below depths of 22.5–25.0 m whose soil moisture content increases slowly and reaches hardly collapsible starting moisture contents is not easy to collapse，therefore，the depths not only can be used as critical depth on-site collapsibility evaluation，but also can be considered to be the reference foundation treatment floor depth in large thickness collapsible loess area when the foundation is treated；(3) moisture content change curves which is from TDR soil moisture probe not only can be used to measure volume moisture content changes of time，and can be used to determine whether happen collapsible loess deformation，collapsible sensitivity and variation of collapsible coefficient with depth，and the diffusion speed of the water in the unsaturated loess can also be calculated roughly.

Key words： soil mechanics time domain reflectometry(TDR) soil water probe collapsible loess under over burden pressure collapse deformation Infiltration law unsaturated soil diffusion speed foundation treatment

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	HUANG Xuefeng1
	2
	LIU Changling1
	YAO Zhihua2
	YANG Xiaohui1
	ZHANG Shijing1
	ZHANG Jianhua3

Cite this article:

HUANG Xuefeng1,2,LIU Changling1, et al. STUDY OF INFILTRATION AND COLLAPSIBLE DEFORMATION LAW OF UNSATURATED LOESS UNDER OVER BURDEN PRESSURE BY USING TDR SOIL WATER PROBE[J]. , 2012, 31(S1): 3231-3238.

URL:

https://rockmech.whrsm.ac.cn/EN/Y2012/V31/IS1/3231

[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 Dingyi. Exploration of some new tendencies in research on loess mechanics[J]. Chinese Journal of Geotechnical Engineering，2001，23(1)：3–13.(in Chinese))

[2] 刘祖典. 黄土力学与工程[M]. 西安：陕西科学技术出版社，1997：1–398.(LIU Zudian. Mechanics and engineering of loess[M]. Xi¢an：Shaanxi Sciences and Technology Press，1997：1–398.(in Chinese))

[3] 钱鸿缙，王继堂，罗宇生，等. 湿陷性黄土地基[M]. 北京：中国建筑工业出版社，1985：1–4.(QIAN Hongjin，WANG Jitang，LUO Yusheng，et al. Collapsible loess foundation[M]. Beijing：China Architecture and Building Press，1985：1–4.(in Chinese))

[4] 刘明振. 湿陷性黄土间歇浸水试验[J]. 岩土工程学报，1985，7(1)：47–54.(LIU Mingzhen. Collapsible loess intermittent water immer- sion test[J]. Chinese Journal of Geotechnical Engineering，1985，7(1)：47–54.(in Chinese))

[5] 陈正汉，许镇鸿，刘祖典. 关于黄土湿陷的若干问题[J]. 土木工程学报，1986，19(3)：62–69.(CHEN Zhenghan，XU Zhenhong，LIU Zudian. Some problems of collapsed loess[J]. China Civil Engineering Journal，1986，19(3)：62–69.(in Chinese))

[6] 苗天德，王正贵. 考虑微结构失稳的湿陷性黄土变形机制[J]. 中国科学：B辑，1990，(1)：86–96.(MIAO Tiande，WANG Zhenggui. Mechanism of deformation of collapsible loess considering unstability of Microstructure[J]. China Science：Seris B，1990，(1)：86–96.(in Chinese))

[7] 苗天德，刘忠玉，任久生. 湿陷性黄土的变形机制与本构关系[J].

岩土工程学报，1999，21(4)：383–387.(MIAO Tiande，LIU Zhongyu，REN Jiusheng. The deformation mechanism and constitutive relation of collapsed loess[J]. Chinese Journal of Geotechnical Engineering，1999，21(4)：383–387.(in Chinese))

[8] 张苏民，郑建国. 湿陷性黄土(Q3)的增湿变形特征[J]. 岩土工程学报，1990，12(4)：21–31.(ZHANG Sumin，ZHENG Jianguo. The humidification deformation characteristics of collapsible loess (Q3)[J]. Chinese Journal of Geotechnical Engineering，1990，12(4)：21–31.(in Chinese))

[9] 沈珠江. 当前非饱和土力学研究中的若干问题[C]// 区域性土的岩土工程问题学术讨论会论文集. 南京：[s. n.]，1996：1–9.(SHEN Zhujiang. The current problems of unsaturated soil mechanics[C]// Proceedings of the Academic Symposium about Geotechnical Engineering Problems of Regional Soil. Nanjing：[s. n.]，1996：1–9.(in Chinese))

[10] 张爱军，邢义川. 黄土非饱和增湿的湿陷过程特性[C]// 罗宇生，汪国烈编. 湿陷性黄土研究与工程. 北京：中国建筑出版社，2001，123–126.(Collapsible loess research and engineering[C]// LUO Yusheng，WANG Guolie ed. Beijing：China Architecture and Building Press，2001：123–126.(in Chinese))

[11] 沈珠江，胡再强. 黄土的二元介质模型[J]. 水利学报，2003，25(7)：1–6.(SHEN Zhujiang，HU Zaiqiang. Binary medium model of loess[J]. Journal of Hydraulic Engineering，2003，25(7)：1–6.(in Chinese))

[12] LIU M D，CARTER J P. A structured cam clay model[J]. Canadian Geotechnical Journal，2002，39(6)：1 313–1 332.

[13] 李佳. 非饱和原状黄土垂直边坡土压力及坡顶浸水渗透规律的试验研究[硕士学位论文][D]. 兰州：兰州理工大学，2009.(LI Jia. The experimental study on soil pressure and soaking infiltration law of unsaturated undisturbed loess vertical slope[M. S. Thesis][D]. Lanzhou：Lanzhou University of Technology，2009.(in Chinese))

[14] 黄雪峰，李佳，崔红，等. 非饱和原状黄土垂直高边坡潜在土压力原位测试试验研究[J]. 岩土工程学报，2010，32(4)：500–506.(HUANG Xuefeng，LI Jia，CUI Hong，et al. Unsaturated undisturbed loess vertical high steep slope potential soil pressure in-situ test experimental studies[J]. Chinese Journal of Geotechnical Engineering，2010，32(4)：500–506.(in Chinese))

[15] 高国瑞. 黄土湿陷变形的结构理论[J]. 岩土工程学报，1990，12(4)：1–10.(GAO Guorui. Structure theory of Loess deformation[J]. Chinese Journal of Geotechnical Engineering，1990，12(4)：1–10.(in Chinese))

[16] 黄雪峰. 大厚度自重湿陷性黄土的湿陷变形特征、地基处理方法和桩基承载性状研究[博士学位论文][D]. 重庆：解放军后勤工程学，2007.(HUANG Xuefeng. The collapsible deformation characteristics, foundation treatment methods and pile foundation bearing character study of big thickness loess collapsible under over burden pressure [Ph. D. Thesis][D]. Chongqing：Logistical Engineering University of PLA，2007.(in Chinese))