| 路基沉陷劈裂注浆加固试验 |
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| 引用本文： | 曾胜,李文,李振存,郭昕. 路基沉陷劈裂注浆加固试验[J]. 长沙理工大学学报(自然科学版), 2013, 0(3): 1-5,12 |
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| 作者姓名： | 曾胜 李文 李振存 郭昕 |
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| 作者单位： | 长沙理工大学交通运输工程学院,湖南长沙410004 |
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| 基金项目： | 基金项目：交通运输部重大科技专项资助项目（2011318824350） |
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| 摘 要： | 为了探寻一种针对公路路基沉陷的有效处治措施,提高注浆加固的处治效果,优化注浆施工工艺,在邵怀高速公路典型路基沉陷成因机理分析的基础上,采用劈裂注浆法对路基沉陷进行了处治技术试验研究,并进行了注浆工程的数值模拟和基于FWD检测技术的注浆效果评价.研究结果表明,注浆压力随时间的增长整体呈现波动上升趋势,劈裂注浆加固最优注浆压力为1.2MPa.FWD检测结果表明,本研究提出的竖向花管注浆及水平花管注浆方案的注浆效果良好,能够有效处治路基沉陷病害.
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| 关 键 词： | 路基 沉陷 劈裂注浆 注浆压力 |
Experiment of splitting grouting on subgrade subsidence |
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| ZENG Sheng,LI Wen,LI Zhen-cun,GUO Xin. Experiment of splitting grouting on subgrade subsidence[J]. Journal of Changsha University of Science and Technology(Natural Science), 2013, 0(3): 1-5,12 |
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| Authors: | ZENG Sheng LI Wen LI Zhen-cun GUO Xin |
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| Affiliation: | (School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410004) |
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| Abstract: | In order to explore an effective treatment measure for expressway subgrade sub- sidence, to improve the grouting treatment effect and optimize the grouting construction technique, the treatment technology of subgrade subsidence is studied by the splitting grou- ting method. The numerical simulation of grouting is conducted and the grouting effect o~ FWD technique is evaluated, based on the genetic mechanism analysis of typical subgrade in Shao-Huai Expressway. The results show that the grouting pressure has a rising trend over time, and the optimal grouting pressure of splitting grouting is 1.2 MPa. The FWD test in- dicate that the grouting effect of vertical the flower tube grouting and horizontal flower tube grouting proposed in this thesis is good, which can treat diseases of subgrade subsidence ef- fectively. |
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| Keywords: | subgrade subsidence splitting grouting grouting pressure |
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