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222275

A study of Seepage through Earth Dams with Chimney or Horizontal Filters.

Article

Last updated: 22 Jan 2023

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Subjects

-

Tags

Irrigation and Hydraulic Engineering

Abstract

This research paper aims to study the effect of both chimney and horizontal filters separately on seepage characteristics (free water surface, seepage face length and seepage discharge) through earth dams based an impervious base. This study was conducted through both the experimental method by sand box model and the numerical method by boundary element method (BEM).
Also, the effect of either chimney or horizontal filters on seepage characteristic was included. Comparison between the experimental data and the corresponding numerical results for each type of filters was carried out. Also, a comparison between chimney and horizontal filters was presented. It was found that for the same cross section of the earth dam, decreasing the distance between the dam inlet face and the filter position (D) for two types of filters resulting in lowering free water surface, increasing seepage face length, and increasing the seepage flow rate. The seepage face length Sr for chimney and horizontal filters were less than the height of exit point for dam without filter, Also the relative seepage face length Sr/Swf for chimney drain was larger than the corresponding value for horizontal filter by an average difference value of 58,58%. Although the relative seepage discharge qsher/qws for horizontal filter was less than that for chimney filter, the seepage discharge, qframe for both the horizontal and the chimney filters were greater than the seepage discharge through dam without filter.
Concerning filter volume, horizontal filter is preferred on chimney filter to reduce the volume of used material.

DOI

10.21608/bfemu.2022.222275

Keywords

Seepage, Earth Dams, Filters, Boundary Element

Authors

First Name

S.

Last Name

Khalaf allah

MiddleName

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Affiliation

Assistance Lecturer, Irrigation and Hydraulics Engineering Department, Faculty of Engineering, Mansoura University, Egypt.

Email

-

City

Mansoura

Orcid

-

First Name

M.

Last Name

G. Abdallah

MiddleName

-

Affiliation

Associate Professor, Irrigation and Hydraulics Engineering Department, Faculty of Engineering, Mansoura University, Egypt.

Email

-

City

Mansoura

Orcid

-

First Name

A.

Last Name

El-Masry

MiddleName

-

Affiliation

Professor of Irrigation Works, Irrigation and Hydraulics Engineering Department, Faculty of Engineering, Mansoura University, Egypt.

Email

-

City

Mansoura

Orcid

-

First Name

K.

Last Name

S. El-Alfy

MiddleName

-

Affiliation

Professor of Hydraulics, Irrigation and Hydraulics Engineering Department, Faculty of Engineering, Mansoura University, Egypt.

Email

-

City

Mansoura

Orcid

-

Volume

33

Article Issue

4

Related Issue

18959

Issue Date

2008-12-01

Receive Date

2008-10-10

Publish Date

2022-02-28

Page Start

22

Page End

34

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 33_Issue 4_Pages 22-34.pdf

PDF . 1.4MB

Link

https://bfemu.journals.ekb.eg/article_222275.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=222275

Order

9

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

-

Details

Type

Article

Created At

22 Jan 2023