(.) | , | , | . . . | . . | ,. , | , | , | |
45 () | 510 | 0.8 |
., | L., | D., | , | , | R, |
.
, V, / | t, | S, /. | n, -1 | ||||
0,4 | |||||||
()
,
d- , .
D- , .
=2 ()
( 6)
S0=0,4 /.
=30
v -, ( 10);
m, xv, yv - ( 10);
Kv - , .
Kv=Kmv*Knv*Kuv,
Kmv,Knv,Kuv , , ( 1-5)
Kmv= k (750/δ )nu
k - , .
nu-
Kmv= 1*(750/600)1=1,25
Kuv= 0,65
Knv= 0,9
Kv=1,25*0,65*0,9=0,73125
n=1000 v/ (D)
D -
n= 1000*140,625/3,14*25=1791
n=1600
v= ,
v=
16516
=10**tpx*Syp*Vnp*K,
, tpx, Syp, Vnp, K
K=kmp
=10*300*31*0,40,75*1,25=262500
N≤ N *ŋ
N=6,3
ŋ =0,7
: .
|
|
-081
_________ .. ________ ..
4.
.
1. : - , , , .
2. .
3 .
() | , | . | . . | , | D, | , Z | b, | h, | ||
20 |
, b, | , , , b, | , | R, |
4. .
t, | , , | S / | V, / | n, -1 | |||
- t () ():
t=h- h,
t- ;
h- ;
h- .
t= 30-28=2
= 100
So=0,6
n= =575,4 -1
n=500 -1
(6)
n - , , -1;
V= =157 /
(7)
z - .
S=0,075 8 57,54=34,5 /
.
S = /
.
-081
_________ .. ________ ..