7/25/2019 Sedimentation Chamber Dt.9.2.16

1/10

Hydraulic Design of Desilting Basin of Madhyamaheshwar

INPUT DATA

Inlet Discharge 18.28 Cumecs

Outlet Discharge 13.2 Cumecs

Average Discharge 15.74 Cumecs

Flushing Discharge 5.08 Cumecs

Inlet Tunnel ia 2.75 m

!ith "# $"%%er & m

Outlet Tunnel Dia 2.75 m

'"tt"m elevati"n at Inlet "# D(tan) 123&.5

F*+ at D(tan) 123,.,

AREA ! BA"IN

Assuming vel"cit- in the asin 0.3 m/sec

Assuming h"%%er angle 50 Degree

*ie "# 'ell "uth 0.3 m

2.3,1433,48, m

sa- 2.4 m

euire Area &0.,333333333

Bell mouth Ele#ation $%&'($

)EN*TH ! IN)ET TRAN"ITIN

*l"%e "# Transiti"n 1 in 2.3

+ength "# Transiti"n 4.37

*a- &

)EN*TH ! BA"IN

!ith "# 'asin 18 m

De%th "# Fl" 3.4 m

Average F"rar vel"cit- 0.2,8&,28105 0.3 m/se

6ective De%th 3.4

Fall vel"cit- #"r 0.2 mm %article sie 0.025

+ength "# 'asin 40.&222222222

r"vie 'asin length 42 m/sec

*a- 42 m

DI"+HAR*E ,ER +RE"T

T"% elevati"n "# crest 1237.5 m

C 0.577

38.&158128324

!)U"HIN* PIPE

Outlet "# the 9ushing 1233.5

:el"cit- in 9ushing %i%e

!)U"HIN $ea ;F*+ in Desilting Tan)(Outlet(hea l"ss< &.4

C 0.&

:el"cit- in 9ushing %i%e &.72

Dia "# 'ell "uth 0.25

Discharge #r"m $(1(1 0.32,8&7228&

$eight "# the $"%%er ;$3