Experimental research on anti-seepage effect of new embankment structure of lateral-constraint and seepage control

NIU Ya-qiang; WANG Xu; ZHENG Jing; JIANG Dai-jun; LIU De-ren; JIANG Peng-cheng

doi:10.16285/j.rsm.2015.S2.033

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Experimental research on anti-seepage effect of new embankment structure of lateral-constraint and seepage control

更新时间：2026-06-25

- Experimental research on anti-seepage effect of new embankment structure of lateral-constraint and seepage control
- Vol. 36, Issue S2, Pages: 252-258(2015)
- 作者机构：
  
  1. 兰州交通大学土木工程学院,甘肃,兰州,730070
  2. 中铁西北科学研究院有限公司,甘肃,兰州,730070
  3. 广州铁路集团公司,广东,广州,510088
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2015.S2.033
  CLC： TU445
- Online First：14 June 2018，
  
  Published：2015
- 稿件说明：
移动端阅览
NIU Ya-qiang, WANG Xu, ZHENG Jing, et al. Experimental research on anti-seepage effect of new embankment structure of lateral-constraint and seepage control[J]. 2015, 36(S2): 252-258.
DOI：

NIU Ya-qiang, WANG Xu, ZHENG Jing, et al. Experimental research on anti-seepage effect of new embankment structure of lateral-constraint and seepage control[J]. 2015, 36(S2): 252-258. DOI： 10.16285/j.rsm.2015.S2.033.

摘要

在湿陷黄土地区修建客运专线如何满足修建过程中以及工后沉降的要求，同时提高路基结构的抗渗性能，是该地区客运专线路基工程的关键技术。提出侧向约束防渗的路基结构新形式，研究了湿陷性黄土地基侧向约束防渗路基结构的防渗效果。采用灰土挤密桩和水泥土挤密桩作为侧向约束防渗结构，通过室内模型试验，针对不同桩体填料及桩间距，测试地基中不同位置及深度处地基土含水率的变化，对比分析后得出，与天然地基相比，设置挤密桩显著提高了地基的侧向防渗能力，且随着桩间距的减小，地基土含水率增长速率逐渐减小，即渗流速度减缓，防渗效果越好。对比试验中两种挤密桩复合地基，水泥土挤密桩侧向防渗效果优于灰土挤密桩，研究成果可供同类工程参考。

Abstract

How to meet the settlement requirements both within construction process and post-construction and to improve impermeability of embankment is a key technology in building the passenger dedicated line in collapsible loess area. On the basis of the subgrade structure with lateral-constraint and seepage control

the effects of lateral-constraint and seepage structure in high speed railway subgrade on improving the seepage property of foundation soil in collapsible loess area are researched. Lime-soil compaction pile and cement-soil compaction pile with different pile spacing are adopted as lateral seepage control structure for indoor model test. According to different fillings of compaction piles and pile spacing

the change of moisture content of the foundation soil in different position and depth is measured. It is concluded by comparative analysis that setting compaction piles has a significant effect on the lateral seepage control compared with natural foundation. And with the spacing decreasing

the change of moisture content of the foundation soil decreases gradually

which means the slower the flowing speed

the better seepage control effect. In terms of the two kinds of compaction piles mentioned above

cement-soil compaction pile has a better effect on seepage control than lime-soil compaction pile. The research results can provide a reference for similar projects.

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