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114859

EFFECT OF CONCRETE SILL ON THE VELOCITY DISTRIBUTIONS AT THE DOWNSTREAM OF BARRAGES

Article

Last updated: 23 Jan 2023

OverviewSimilar Items

Subjects

-

Tags

Civil Engineering: structural, Geotechnical, reinforced concrete and s…nd sanitary engineering, Hydraulic, Railway, construction Management.

Abstract

The effect of concrete sills on the velocity distributions so as their magnitude and the navigation path at the downstream side of barrages is investigated. The research also intended to determine the beginning of the apron and its end. A 3-D physical model was constructed with a fixed bed. Bollin Barrage which is located at about 100 km north of Cairo, Egypt was chosen to be investigated. The barrage suffers from cracks in the lock bed and stresses on the bed of the opening adjacent to the lock that might topple it. An experimental program was designed to investigate several alternatives that might solve the cracks formation. The test program was divided into 4 phases. Each phase investigates 3 scenarios. Experiments were executed and measurements were taken. Measurements were represented and analyzed. Based on the experimental results, it is concluded that the normal velocity distributions and the values of the lateral currents are attained when a concrete sill with a thickness of 1.2 m and a slope of 1:3 at both sides of the sill was implemented. This sill enhanced the height and length of the hydraulic jump. Also, operating all vents gives better results, regarding the velocity distributions.

DOI

10.21608/jesaun.2013.114859

Keywords

Concrete Sills, Velocity Distribution, Navigation Path, 3-D Physical Model

Authors

First Name

S. E.

Last Name

Mahgoub

MiddleName

-

Affiliation

Hydraulics Research Institute, National Water Research Center, Egypt

Email

s_mahgoub@hri-egypt.org

City

-

Orcid

-

First Name

S.

Last Name

Abdel-Fattah

MiddleName

-

Affiliation

Hydraulics Research Institute, National Water Research Center, Egypt

Email

-

City

-

Orcid

-

First Name

K.

Last Name

Henafy

MiddleName

-

Affiliation

Hydraulics Research Institute, National Water Research Center, Egypt

Email

-

City

-

Orcid

-

Volume

41

Article Issue

No 4

Related Issue

16867

Issue Date

2013-07-01

Receive Date

2013-04-16

Publish Date

2013-07-01

Page Start

1,380

Page End

1,395

Print ISSN

1687-0530

Online ISSN

2356-8550

Article File

JESAUN_Volume 41_Issue No 4_Pages 1380-1395.pdf

PDF . 1.1MB

Link

https://jesaun.journals.ekb.eg/article_114859.html

Detail API

https://jesaun.journals.ekb.eg/service?article_code=114859

Order

1

Type

Research Paper

Type Code

1,438

Publication Type

Journal

Publication Title

JES. Journal of Engineering Sciences

Publication Link

https://jesaun.journals.ekb.eg/

MainTitle

-

Details

Type

Article

Created At

23 Jan 2023