Effect of Characteristics of Deep Buried Aquitard on Seepage Field

王正成; 毛海涛; 程龙飞; 申纪伟

doi:10.13409/j.cnki.jdpme.2019.06.007

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Effect of Characteristics of Deep Buried Aquitard on Seepage Field

更新时间：2025-12-11

- Effect of Characteristics of Deep Buried Aquitard on Seepage Field
- Vol. 39, Issue 6, Pages: 928-937(2019)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2019.06.007
  CLC： V223.4
- Published：2019
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[1]王正成,毛海涛,程龙飞,申纪伟.深厚覆盖层中弱透水层特性对渗流场的影响[J].防灾减灾工程学报,2019,39(06):928-937.

王正成, 毛海涛, 程龙飞, et al. Effect of Characteristics of Deep Buried Aquitard on Seepage Field[J]. 2019, 39(6): 928-937.
[1]王正成,毛海涛,程龙飞,申纪伟.深厚覆盖层中弱透水层特性对渗流场的影响[J].防灾减灾工程学报,2019,39(06):928-937. DOI： 10.13409/j.cnki.jdpme.2019.06.007.

王正成, 毛海涛, 程龙飞, et al. Effect of Characteristics of Deep Buried Aquitard on Seepage Field[J]. 2019, 39(6): 928-937. DOI： 10.13409/j.cnki.jdpme.2019.06.007.

摘要

中国西部地区的深厚覆盖层坝基中常存在弱透水层

对坝基渗流场有一定影响。基于非饱和土渗流理论

借助有限元软件Seep/w建立数值模型

得出渗流量和出逸坡降

并结合2个实际工程分析弱透水层深度、厚度、连续性对渗流场的影响。结果表明

采用悬挂式防渗墙或无防渗墙时

深度越小的弱透水层控渗效果越佳;深度越大的弱透水层与防渗墙形成的半封闭式联合防渗体系

越能有效控制渗流量和抑制出逸坡降。渗流量和出逸坡降都随着弱透水层厚度的增大而降低;弱透水层厚度及连续性对采用半封闭式防渗墙控渗时的渗流场影响最大

悬挂式防渗墙次之

全封闭式防渗墙最小。渗流量和出逸坡降随上游、底端开口长度的增加而增大;渗流量随下游开口长度的增加而增大

但出逸坡降随下游开口长度的增加呈先增大后减小的趋势。弱透水层的连续性对渗流场影响较小。采用半封闭式防渗墙时

渗流量和出逸坡降从高到低排序为底端开口、上游开口、下游开口。采用全封闭式防渗墙时

防渗墙承担主要的控渗任务

弱透水层的深度、厚度、连续性对渗流场的影响极小。

Abstract

Aquitard often appears in thick overburden dam base in Western China

which has a certain effect on seepage field of dam foundation.On the basis of seepage theory of unsaturated soil

the numerical model was established by software Seep/w.The seepage discharge and exit gradient were obtained and the effect of aquitard characteristics on seepage field was studied.The simulated results were compared with those of practical engineering projects.It shows that the shallower the buried depth of the aquitard

the better the seepage control effect for suspended cut-off wall or cut-off wall engineering.But for deep buried aquitard

the semi-closed seepage prevention system composed of aquitard and cut-off wall can also perform a good seepage control effect.Seepage discharge and exit gradient decrease with the buried depth of the aquitard.The thickness and continuity of the aquitard have the biggest impact on seepage field with a semiclosed cut-off wall

followed by suspended cut-off wall and totally enclosed cut-off wall in sequence.Seepage discharge and exit gradient increase with the bottom or the upstream gap between aquitard and cut-off wall.Seepage discharge increases with the downstream open length between aquitard and cut-off wall.The aquitard continuity has less influence on seepage field.Seepage discharge and exit gradient decrease orderly in the cases of bottom opening

upstream opending and downstream opening when semi-closed cut-off wall was adopted.Cut-off wall plays an important role in seepage control when totally enclosed cut-off wall was adopted

the influence of depth

thickness and continuity of aquitard on seepage field can be ignored.

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references

流固耦合的多元结构深厚覆盖层透水地基的力学特性 [J]. 王正成,毛海涛,龙顺江,姜海波,张如意. 土木建筑与环境工程 . 2017(03)

基于流固耦合的坝基中弱透水层对渗流的影响分析 [J]. 王正成,毛海涛,姜海波,龙顺江,张如意. 水动力学研究与进展（A辑） . 2017(03)

深覆盖层上土石坝心墙与防渗墙连接型式研究 [J]. 沈振中,田振宇,徐力群,甘磊. 岩土工程学报 . 2017(05)

强弱透水相间深厚覆盖层坝基的渗流分析 [J]. 吴梦喜,杨连枝,王锋. 水利学报 . 2013(12)

瀑布沟水电站库首右岸拉裂变形体变形特征与分析 [J]. 杨晓娟,邓建辉,陈群,郑俊. 岩石力学与工程学报 . 2013(03)

向家坝水电站左岸坝基破碎岩体渗透变形特性试验研究 [J]. 冯树荣,赵海斌,蒋中明,曾祥喜. 岩土工程学报 . 2012(04)

悬挂式防渗墙防渗效果的模拟试验研究 [J]. 王保田,陈西安. 岩石力学与工程学报 . 2008(S1)

考虑非达西流的弱透水层固结计算 [J]. 谢海澜,武强,赵增敏,金晓丽,李娟. 岩土力学 . 2007(05)

含弱透水层岸坡地下水渗流特征的数值分析 [J]. 汪斌,唐辉明. 岩土力学 . 2006(S1)

三维饱和非饱和渗流场求解及其逸出面边界条件处理 [J]. 朱岳明,龚道勇. 水科学进展 . 2003(01)

考虑非饱和土体的土石坝渗流与坝坡稳定分析研究 [D]. 朱晓源. 浙江大学 2006

An Improved Iterative Method of Saturated-Unsaturated Unsteady Seepage Numerical Simulation [J] . Hui Hu,Lian Sheng Tang,Xing Li Lin,Fei Kuang. Applied Mechanics and Materials . 2013 (405)

Multiphase Flow Simulations through Tarbela Dam Spillways and Tunnels [J] . Abid, Muhammad,Siddiqi, Muftooh Ur Rehman. Journal of Water Resource and Protection . 2010 (6)

Multivariate statistical analyses of artificial radionuclides and heavy metals contaminations in deep mud of Keban Dam Lake, Turkey [J] . Applied Radiation and Isotopes . 2007 (2)

Beaver Damming and Palsa Dynamics in a Subarctic Mountainous Environment, Wolf Creek, Yukon Territory, Canada [J] . Antoni G. Lewkowicz,Tara L. Coultish. Arctic, Antarctic, and Alpine Research . 2004 (2)

Evaluation of heterogeneity and field-scale groundwater flow regime in a leaky till aquitard [J] . Richard E. Gerber,Joseph I. Boyce,Ken W. Howard. Hydrogeology Journal . 2001 (1)

The Keban dam foundation on karstified limestone—A case history [J] . A. Bozovic,H. Budanur,E. Nonveiller,B. Pavlin. Bulletin of the International Association of Engineering Geology . 1981 (1)

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