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[1]罗东娜,曾婕,王旭东.抽注水作用下含水层砂土变形特征试验[J].南京工业大学学报(自然科学版),2013,35(03):11-15.[doi:10.3969/j.issn.1671-7627.2013.03.003]
 LUO Dongna,ZENG Jie,WANG Xudong.Test study on aquifer sandy soil deformation characteristics under pumping-recharge[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2013,35(03):11-15.[doi:10.3969/j.issn.1671-7627.2013.03.003]
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抽注水作用下含水层砂土变形特征试验()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
35
期数:
2013年03期
页码:
11-15
栏目:
出版日期:
2013-05-20

文章信息/Info

Title:
Test study on aquifer sandy soil deformation characteristics under pumping-recharge
文章编号:
1671-7627(2013)03-0011-05
作者:
罗东娜曾婕王旭东
南京工业大学 岩土工程研究所,江苏 南京 210009
Author(s):
LUO DongnaZENG JieWANG Xudong
Institute of Geotechnical Engineering,Nanjing University of Technology,Nanjing 210009,China
关键词:
含水层 抽注水 应力路径 变形特性
Keywords:
aquifer pumping-recharge stress path deformation characteristics
分类号:
P641
DOI:
10.3969/j.issn.1671-7627.2013.03.003
文献标志码:
A
摘要:
基于抽注水条件下含水层土体应力状态和应力路径的理论分析,采用FlowTracⅡ增量固结试验系统,通过控制孔隙水压力实现了对实际含水层抽注水条件下土体应力状态和应力路径的模拟,探讨总应力不变条件下,孔隙水压力诱发的土体变形特征; 指出常规单向压缩试验结果描述抽注水条件下含水层土体变形特性存在局限性,验证了土体变形特性随应力水平η变化的规律; 不同粒径砂土的孔压加载试验表明抽水条件下含水层砂土的变形不是瞬时产生的,其变形存在滞后效应及蠕变特性,抽水应力路径下砂土的平均应变速率与时间关系在双对数坐标中呈现近似线性关系。
Abstract:
Based on the theoretical analysis of both the stress state and the stress path of aquifer under pumping-recharge,adopting FlowTrac Ⅱ system for rowe incremental consolidation testing,the stress state and the stress path of the actual aquifer under pumping-recharge were simulated by controlling the pore water pressure.And the soil deformation characteristics caused by the variation of pore water pressure were discussed under the same total stress.It was indicated that there would be limitations when describing soil deformation characteristics under pumping-recharge by using the results of conventional unidirectional compression tests.Moreover,the changing regularity of the soil deformation characteristics with the stress level η was verified.The pumping test of different particle size sands showed that the deformation produced by aquifer sandy soil did not generated at the moment,and there were oppositely deformation lags and creep characteristics.Besides,in the pumping stress path,it showed a linear relationship between the average strain rate and time in bi-logarithm coordinate.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2012-05-02
基金项目:国家自然科学基金(41272303); 江苏省六大人才高峰基金(09-F-004)
作者简介:罗东娜(1986—),女,宁夏固原人,硕士生,主要研究方向为环境岩土工程; 王旭东(联系人),教授,E-mail: cewxd@njut.edu.cn..
更新日期/Last Update: 2013-05-31