| 防渗帷幕对坝基渗流量的敏感性分析--以新安江3号坝段为实际模型 |
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| 引用本文： | 贾彩虹,顾冲时.防渗帷幕对坝基渗流量的敏感性分析--以新安江3号坝段为实际模型[J].南京工程学院学报(自然科学版),2004,2(3):23-28. |
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| 作者姓名： | 贾彩虹 顾冲时 |
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| 作者单位： | 1. 南京工程学院建筑工程系,江苏,南京,210013
2. 河海大学水电学院,江苏,南京,210098 |
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| 摘 要： | 在内外因素的共同作用下 ,帷幕体在不同程度上存在一定的老化问题 ,其防渗性能也在逐渐减弱 ,即帷幕的渗透系数K是一个变量 .随着K值的变化 ,幕后渗流量Q会产生什么样的变化是一个值得探讨的问题 .以新安江 3号坝段为例 ,采用三维渗流有限元的数值试验方法 ,通过改变帷幕渗透系数 ,分析帷幕渗透系数K对灌浆廊道渗流量Q的影响 ,建立了相关关系式Q～K ;研究了帷幕工作形态变化对坝基渗流场变化的敏感性 .
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| 关 键 词： | 帷幕 渗透系数 渗流量 |
| 文章编号： | 1672-2558(2004)03-0023-06 |
| 修稿时间： | 2004年6月4日 |
The Sensitivity of the Impervious Curtain to the Seepage Discharge of Grouting Gallery |
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| JIA Caihong,GU Chongshi.The Sensitivity of the Impervious Curtain to the Seepage Discharge of Grouting Gallery[J].Journal of Nanjing Institute of Technology :Natural Science Edition,2004,2(3):23-28. |
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| Authors: | JIA Caihong GU Chongshi |
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| Institution: | JIA Caihong 1 GU Chongshi 2 |
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| Abstract: | Influenced by its inner factors and outer factors, the impervious curtain is inevitably aging to some degree and its impervious capability is weakening, which means the permeability coefficient K of the curtain is a variable. It is worth discussing how to change the seepage discharge of grouting gallery Q with the change of the K. Taking the 3rd section of the Xinanjiang Dam as an example and using the numerical testing method of the 3DFEM of seepage flow, this paper focuses on the sensitivity of the impervious curtain to the seepage discharge of grouting gallery. The change of the permeability coefficient K will produce an impact on the seepage discharge of grouting gallery Q. Accordingly the expressions of K and Q have been set up. |
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| Keywords: | impervious curtain permeability coefficient seepage discharge |
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