The effect of cutoffs on the uplift pressure beneath the hydraulic structures floor
Other Title(s)
تأثير الحواجب القاطعة على ضغط الإصعاد تحت أرضية المنشآت الهيدروليكية
Joint Authors
al-Tabatabai, Faysal Abd al-Razzaq
al-Waili, Zabyah Subayh
Source
Wasit Journal of Engineering Sciences
Issue
Vol. 6, Issue 3 (31 Dec. 2018), pp.20-28, 9 p.
Publisher
Wasit University College of Engineering
Publication Date
2018-12-31
Country of Publication
Iraq
No. of Pages
9
Main Subjects
Abstract EN
The use of cutoffs underneath the hydraulic structures is considered a safe solution to ensure the stability of hydraulic structure against uplift pressure and piping phenomenon in addition to the sliding and overturning forces of the water.
These cutoffs are used at critical sections underneath the floor of hydraulic structure to substitute with their depths the horizontal lengths of the creep line of the hydraulic structure base.
In this paper, the experimental method- by using electrical analogue model- was carried out to plot the flow net and study the efficiency of the front and rear faces of the cutoffs for dissipating the potential energy of the percolating water underneath the floor of hydraulic structure.
An electrical analogue model which was used in this study consists of twenty five models with different depths of upstream and downstream cutoffs.
After plotting the flow net for all models, it is concluded that the efficiency of the inner sides are less than that of the outer sides which were investigated before in this topic of this work that both faces reduction values in the uplift pressure are considered the same, where the efficiency of the outer face of upstream cutoff is (70.35) % and for the inner face is (29.64)%, while for the downstream cutoff the efficiency for the outer face is (76.21)% and for the inner face is (23.79)% .
American Psychological Association (APA)
al-Tabatabai, Faysal Abd al-Razzaq& al-Waili, Zabyah Subayh. 2018. The effect of cutoffs on the uplift pressure beneath the hydraulic structures floor. Wasit Journal of Engineering Sciences،Vol. 6, no. 3, pp.20-28.
https://search.emarefa.net/detail/BIM-920152
Modern Language Association (MLA)
al-Tabatabai, Faysal Abd al-Razzaq& al-Waili, Zabyah Subayh. The effect of cutoffs on the uplift pressure beneath the hydraulic structures floor. Wasit Journal of Engineering Sciences Vol. 6, no. 3 (2018), pp.20-28.
https://search.emarefa.net/detail/BIM-920152
American Medical Association (AMA)
al-Tabatabai, Faysal Abd al-Razzaq& al-Waili, Zabyah Subayh. The effect of cutoffs on the uplift pressure beneath the hydraulic structures floor. Wasit Journal of Engineering Sciences. 2018. Vol. 6, no. 3, pp.20-28.
https://search.emarefa.net/detail/BIM-920152
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 28
Record ID
BIM-920152