| 南宁市邕江防洪大堤管涌地质灾害预测方法 |
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| 引用本文： | 聂乐昌,玉才诚.南宁市邕江防洪大堤管涌地质灾害预测方法[J].地质灾害与环境保护,2000,11(2):188-191. |
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| 作者姓名： | 聂乐昌 玉才诚 |
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| 作者单位： | 广西地质灾害防治工程勘察设计院,南宁,530003 |
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| 摘 要： | 邕江防洪水堤是南宁市唯一抵御洪水侵害的防线，其堤基为河床和河漫滩相冲洪积物。下部中、粗砂层和圆砾层属管涌层；中部粉砂层、粉土层属流土层；上部粘性土层；底部为第三系泥岩层。本文通过对场地管涌县、流土层判别、水文地质条件概化、地下水回水位预测、盖层变形破坏预测和地下水水力坡降计算，来预测场地发生管涌地质灾害的可能性。
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| 关 键 词： | 堤基 地质灾害 防洪堤 |
| 修稿时间： | ： |
PREDICTION OF PIPING IN FLOOD EMBANKMENT OF THE YONGLIANG RIVER IN NANNING |
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| NIE Le-chang,YU Cai-cheng.PREDICTION OF PIPING IN FLOOD EMBANKMENT OF THE YONGLIANG RIVER IN NANNING[J].Journal of Geological Hazards and Environment Preservation,2000,11(2):188-191. |
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| Authors: | NIE Le-chang YU Cai-cheng |
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| Abstract: | The foundation of flood embakment of Yongjiang river is on the river bed and alluvial flat composed of aluvial and fluvial deposits.the lower parts of the deposits are medium-grained and coarse sand and pebble layer easily piping;the middle parts are silt layers easily flowing;the top parts are clay layer,the bottom is Tertiary impermeable Mudstone stratum.On the basis of the determination of piping layers and earth-flowing layers,the conceptualization of hydrogeological condition,the prediction of backwater table of groundwater,the prediction of deformation and failure of capping beds,and the calculation of hydralic gradient of groundwater,the possibility of geological disasters caused by piping is predicted in this paper. |
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| Keywords: | embankment base piping disaster prediction |
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