[1]胡 昕,洪宝宁,孙 秋,等.Cl-1和SO2-4对生态土侵蚀试验研究[J].深圳大学学报理工版,2007,24(4):368-372.
 HU Xin,HONG Bao-ning,SUN Qiu,et al.Experimental study on erosive effects of Cl-1 and SO2-4 on ecological soil[J].Journal of Shenzhen University Science and Engineering,2007,24(4):368-372.
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Cl-1和SO2-4对生态土侵蚀试验研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第24卷
期数:
2007年4期
页码:
368-372
栏目:
土木建筑工程
出版日期:
2007-10-30

文章信息/Info

Title:
Experimental study on erosive effects of Cl-1 and SO2-4 on ecological soil
文章编号:
1000-2618(2007)04-0368-05
作者:
胡 昕12洪宝宁12孙 秋3张华杰12
1)河海大学岩土工程水利部重点实验室,南京210098;
2)河海大学岩土工程研究所,南京210098;
3)南京市公路管理处公路科学研究所,南京210012
Author(s):
HU Xin12HONG Bao-ning12SUN Qiu3and ZHANG Hua-jie12

1)Key Laboratory for Geotechnical,Engineering of Ministry of Water Resource,Hohai University,Nanjing 210098,P.R.China
2)Research Institute of Geotechnical Engineering,Hohai University,Nanjing 210098,P.R.China
3)Research Institute of Highway Nanjing Highway,Management Division,Nanjing 210098,P.R.China

关键词:
生态土侵蚀机理力学特性微结构特征参数
Keywords:
ecological soil corrosion mechanism mechanical property microstructure characteristic parameter
分类号:
TU 411.92;TU 449
文献标志码:
A
摘要:

选用NaCl和Na2SO4配制侵蚀溶液浸泡生态土试样,在指定龄期取出土样测定其单轴抗压强度、湿密度和含水率,拍摄对应的微结构图像,从而了解C-1和SO2-4对生态土的侵蚀机理.研究结果表明:Cl-和SO2-4对生态土力学性质的侵蚀非常明显,浸泡在以上离子溶液中的生态土抗压强度均有较大程度的降低;海水对生态土的侵蚀主要来自Cl-和SO2-4对其颗粒集聚体之间连接物的溶蚀,对颗粒本身的溶蚀作用相对较小;Cl-对生态土的侵蚀作用比SO2-4更为显著;在有海水回灌的地区,使用生态土加固软土地基时,必须采取措施防止海水对生态土的溶蚀.

Abstract:

In order to study erosion mechanism of ecological soil in seawater, ecological soil samples were soaked in erosive solutions prepared from NaCl or Na2SO4. The soil samples were taken out in the appointed stadium. The uniaxial compressive strength, wet density and water content of the soil samples were measured. The microstructure images were taken by use of SEM. The results indicate that Cl- and SO2-4 have a notable impact on physical and mechanical properties of ecological soil and the uniaxial compressive strength of ecological soil soaked in the above solutions decreases remarkably. The erosive effects of seawater on the ecological soil were mainly caused by the erosive effects of Cl- and SO2-4 on connections among grain conglomerates. Cl- and SO2-4have less influences on grain conglomerates themselves. Cl- has more prominent erosive effect on ecological soil than SO2-4. The measures against the erosive effects of seawater on the ecological soil must be taken when soft soils are reinforced by use of ecological soil in area of seawater recharge.

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期:2007-04-04;修回日期:2007-09-07
基金项目:国家自然科学基金资助项目(50279008);广东省交通厅科技资助项目(2002-06);江苏省交通科学研究计划资助项目(04Y006);盐城市科技发展计划资助项目(YKJ2004002)
作者简介:胡昕(1979-),男(汉族),新疆维吾尔自治区阿勒泰市人,河海大学博士研究生.E-mail:moyuan@126.com
通讯作者:洪宝宁(1960-),男(汉族),河海大学教授、博士生导师.E-mail:hongbaoning24@hhu.edu.cn

更新日期/Last Update: 2007-12-05