| 南阳膨胀土的宏观结构与路堑边坡病害治理 |
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| 引用本文： | 冯玉勇,曲永新,徐卫亚.南阳膨胀土的宏观结构与路堑边坡病害治理[J].工程地质学报(英文版),2005,13(2):169-173. |
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| 作者姓名： | 冯玉勇 曲永新 徐卫亚 |
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| 作者单位： | 河海大学土木工程学院,南京,210098;中国科学院地质与地球物理研究所,北京,100029 |
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| 摘 要： | 南阳盆地是我国膨胀土主要分布地区之一,在宁(南京)西(西安)铁路施工工程地质调查中,发现南阳地区上第三系中新统湖相沉积膨胀土中发育的构造裂隙、中更新统冲洪积膨胀土中发育的卸荷裂隙和全新统湖沼相膨胀土中发育的收缩裂隙控制了路堑边坡病害的形式、规模和破坏特征。施工过程中采取了针对性措施治理边坡病害,取得了明显的工程效果。
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| 关 键 词： | 膨胀土 宏观结构 路堑边坡 病害 |
| 文章编号： | 1004-9665/2005/13(02)-0169-05 |
| 收稿时间： | 2004-04-09 |
| 修稿时间： | 2004年4月9日 |
MACROSTRUCTURE OF NANYANG EXPANSIVE SOILS AND TREATMENT OF HAZRARDS ALONG THE RAILROAD TRENCH |
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| FENG Yuyong,QU Yongxin,Xu Weiya.MACROSTRUCTURE OF NANYANG EXPANSIVE SOILS AND TREATMENT OF HAZRARDS ALONG THE RAILROAD TRENCH[J].Journal of Engineering Geology,2005,13(2):169-173. |
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| Authors: | FENG Yuyong QU Yongxin Xu Weiya |
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| Affiliation: | 1.College of Civil Engineering, Hohai University, Nanjing 210098;2.Institute of Geology and Geophysics, CAS, Beijing 100029 |
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| Abstract: | During the construction of Nanjing-Xi'an railway, engineering geological investigations revealed that tectonic fractures were developed in Neozoic lacustrine clays, off-loading fractures formed in Medie-Pleistocene alluvial or diluvial clays, whereas shrinking fractures occurred in Holoence alluvial or lacustrine clays. These fractures control types of slope failures, their scales and characteristics along the railroad trench. Special engineering measures were recommended and adopted to deal with slope engineering problems, and are proved effective in reducing such geological hazards. |
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| Keywords: | Expansive soils Macrostructure Railroad trench Hazard |
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