| 南水北调中线典型承压水地层渠段渗流场数值分析 |
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| 引用本文： | 崔皓东,张家发,张 伟,王金龙.南水北调中线典型承压水地层渠段渗流场数值分析[J].岩土力学,2010,31(Z2):447-451. |
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| 作者姓名： | 崔皓东 张家发 张 伟 王金龙 |
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| 作者单位： | 长江科学院 国家大坝安全工程技术研究中心, 武汉 430010 |
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| 基金项目： | 国家自然科学基金项目（No. 50639090）；国家“十一五”支撑计划课题（No. 2006BAB04A10)；中央级公益性科研院所基本科研业务费（No. CKSF2010017）；长江科学院博士启动基金（No. CKSQ2010083）。 |
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| 摘 要： | 南水北调中线工程中,渗流问题是影响渠道衬砌及渠坡稳定的关键因素之一,在具有承压水地层的深挖方渠段尤其如此。为更全面分析该类渠段渗流场分布特征及渗控措施合理性,采用渗流自由面、密集排水孔三维有限元精细模拟技术,针对典型深挖方渠段建立渗流模型,模拟渠道渗流场分布,分析渗控措施的效果。结果表明,在具有承压水地层渠段布置排水垫层,并结合逆止阀以及渠坡排水孔等综合措施,能有效降低渠底衬砌板下扬压力,为工程安全运行提供有力保障。
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| 关 键 词： | 南水北调中线 压力水头 渗流控制 数值模拟 |
| 收稿时间： | 2010-07-29 |
Numerical analysis of seepage field for typical canal stretch on confined aquifer of Middle Route Project of South-to-North Water Transfer |
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| CUI Hao-dong,ZHANG Jia-fa,ZHANG Wei,WANG Jin-long.Numerical analysis of seepage field for typical canal stretch on confined aquifer of Middle Route Project of South-to-North Water Transfer[J].Rock and Soil Mechanics,2010,31(Z2):447-451. |
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| Authors: | CUI Hao-dong ZHANG Jia-fa ZHANG Wei WANG Jin-long |
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| Institution: | National Research Center for Dam Safety Engineering Technology, Yangtze River Scientific Research Institute, Wuhan 430010, China |
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| Abstract: | The seepage field relates to canal lining and canal slope stability for the Middle Route Project of the South-to-North Water Transfer, especially for stretches of deep canal on confined aquifer. In order to analyse the distribution of seepage field and rationality of seepage control measures comprehensively, a typical canal model is established with the 3D finite element technology suitable for the simulation of phreatic surface and dense drainage holes. The seepage field is simulated and the effects of seepage control measures are analyzed. The results show that water pressure under the canal lining plate will be reduced significantly by the measures integrated by canal slope drainage holes and drainage cushion with drainage holes which open just when the ground water head in the cushion is higher than the water level in the canal, so as to ensure the project safety. |
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| Keywords: | Middle Route Project of South-to-North Water Transfer water pressure head seepage field control numerical simulation |
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