<3>о
)2/3
_
ikyflg j
23,0
0,42-6,0-4.43
2/ 3
= 1,62 m ,
b u n d a ,
m
= 0 , 4 2 — a m a l i y profil li v o d o s li v s a r f ko effitsiy en ti:
Я = Я
-
- 1 62 - 1,54
^ 01
2g ” 1 ,Ь 2
2-9,81
= 1,5 m ,
b u n d a t90l — a m a l i y p r o f i l l i v o d o s l i v d a g i s u v t e z l i g i ,
&o\ = q / \
=
= 3 , 8 3 / 2 , 4 9 = 1,54 m / s .
Q u d u q c h u q u r l i g i d, = / ^ - Я , = 2 , 4 9 - 1,5 = 0 , 9 9 m . Q u d u q c h u q u r
ligini d, = 1,0 m d e b q a b u l q ila m iz .
Q u d u q u z u n l i g i n i h is o b l a y m i z :
Ч = Ir. + Q, = 3 , 0 5 + 10,71 = 13,76 m ,
b u n d a , 1 Г| — o q i m n i n g otilib tu shish u zu n lig i, m ; f C| — s a k ra sh uzunligi, m.
Ir, = Ф ^ Я о (2Я, + Я ) = 0 , 9 1 ^ 1 , 9 4 ( 2 • 2 + 1,8) = 3 ,0 5 m ;
^c, = ( 3 ,2 . .. 4 , 3 ) / ^ = 4 , 3 - 2 , 4 9 = 10,71 m.
Uchinchi (o x irg i) pog'on a hisobi.
D a s t l a b k i h i s o b l a r u c h u n
d = Q ,l
m
d e b q a b u l q i l a m i z . S h a r s h a r a p o g ' o n a s i n i n g t u s h i s h b a l a n d l i g i P 3 = 1 , 5 m ,
s h u n d a
= P3 +
1
/3 = 1,5 + 0 , 7 = 2 , 2 m b o ' l a d i .
S iq ilg a n c h u q u r l i k
n i s o l i s h t i r m a suv sa rfi
q
= 3 ,8 3 m 3/ s v a te z lik
k o e ffits i y e n ti
= 0 , 9 4 b o ' l g a n d a , t a n l o v u su li b i l a n q u y id a g i f o r m u l a d a n
a n i q l a y m i z :
q
=
(phc, f i g i H i + S J - h C}
yoki
3 , 8 3
= 0 , 9 4 - ^ - 4 , 4 3 7 1 , 5 + 2 , 2 - ^
b u n d a n ,
hC}
= 0 , 5 2 m g a t e n g b o 'l a d i .
S h a r s h a r a oxirgi p o g 'o n a s i k o 'n d a l a n g k e s im i t o ' g 'r i b u r c h a k l i va kengligi
o 'z g a r m a s b o 'lg a n lig i u c h u n ik k in ch i t u t a s h c h u q u r l i k n i q u y id a g i f o r m u l a d a n
a n i q l a y m i z :
J l +
iaf %
- 1
= 0 ,5 0 ,5 2
J l
+ 8‘1’1:3’? 3*2 - !
L \
V
9,8-0,52
= 2 , 2 7 m.
154
Q u d u q c h u q u r l i g i 3 =
1,1
Ar3
- h k
= 1,1
- 2 , 2 7 - 1 , 8 = 0 , 6 9 7 m .
Q u d u q c h u q u r l i g i n i , = 0 ,7 m d e b q a b u l q ila m iz .
Q u d u q u z u n l i g i n i a n i q l a y m i z :
/*, =
l Ti
+
= 2 , 5 4 + 9 , 7 6 = 12,3 m .
O q i m n i n g o ti l i b t u s h i s h u z u n lig i:
t b
=
<р^Нт (2P, +
Я , ) = 0 , 9 4 ^ 1 , 6 2 (2
1,5
+ 1 , 5 ) = 2 , 5 4 m.
S a k r a s h u z u n l ig i
/CJ = (3 ,2 — 4 , 3)/z7) = 4 , 3 - 2 , 2 9 = 9 , 7 6 m
2 - m a s h g ‘u l o t
T e z o q a r n i n g gidravlik his obi
M a sa la .
B e ri lg a n q u y id a g i m a ’l u m o t l a r a s o s i d a o ‘z a n i silliq t e z o q a r
h is o b i b a jarils in : 1) k a n a l d a g i s u v sa rfla ri Qno(= 2 5 , 0 m 3/ s ,
Qm.n
= 1 5 , 0 m 3/ s ,
0 max= 3 1 ,O m 3/ s . 2 ) k a n a l d a g i suv c h u q u r l i k l a r i h nor= 2 , 4 m , /zmin= l , 7 5 m ,
h max
= 2 ,7 4 m ; 3 ) k a n a l d a g i suv t e z li k la r i
&nor
= 0 , 9 8 m / s , i?min = 0 , 8 9 m / s ,
^max = 1.02 m / s ; 4 ) k a n a l qiyalik koeffitsiyentla ri m = 1,5; 5) k a n a l tu b i n i n g
kengligi />*=7,0 m ; 6) u m u m i y tu sh ish balan d lig i
P =
12,0 m ; 7) n o v nishabligi
/ = 0 , 2 . T e z o q a r h is o b i y s x e m a s i 2 . 6 3 - r a s m d a k eltirilg a n .
„Y uB SS
-PBSS
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