Nazorat savollari:
Markazlashtirish va reduksiya uchun tuzatma qanday topiladi?
Triangulyatsiyada qator uzunligi qanday hisoblanadi?
Direksion burchak qanday topiladi?
11-amaliy mashg‘ulot.
Karer hududida III klass triangulyatsiya to‘rini parametrik usul bilan tenglashtirish
11.1-rasm. III klass triangulyatsiya to‘ri sxemasi.
Boshlang‘ich ma’lumotlar
11.1-jadval
Punkt nomi
|
Koordinatalar
|
Direksion burchaklar
|
Tomonlar logarifmi
|
X
|
U
|
A
|
6 114 256.42
|
7 282 749.44
|
|
|
|
|
|
2801009,1''
|
4.045 9241
|
V
|
6 124 055.26
|
7 287 996.75
|
|
|
|
|
|
16903234,4''
|
3.986 6622
|
S
|
6 114 518.77
|
7 282 749.44
|
|
|
|
|
|
26705121,3''
|
3.845 8617
|
O‘lchangan va dastlabki tenglashtirilgan burchaklar
11. 2- jadval
Uchbur.
№
|
Burchaklar
№
|
O‘lchangan burchaklar
M
|
Tuzatma
v''
|
Tenglashtirilgan burchaklar, M+ v
|
I
|
1
3
8
|
200 00' 40.2''
14 03 41.0
145 55 40.8
180 00 02.0
|
-2.0
+0.3
-0.3
-2.0
|
200 00' 38.2''
14 03 41.3
145 55 40.5
180 00 00.0
|
II
|
4
5
9
|
24 33 53.9
38 42 05.2
116 43 58.1
179 59 57.2
|
-0.5
+2.8
+0.5
+2.8
|
24 33 53.4
38 42 08.0
116 43 58.6
180 00 00.0
|
III
|
6
2
7
|
42 59 03.9
39 40 34.9
97 20 21.1
179 59 59.9
|
+1.2
-0.9
-0.2
+0.1
|
42 59 05.1
39 40 34.0
97 20 20.9
180 00 00.0
|
D (XD, YD)punktining taqribiy koordinatasini Yung formulasi bilan hisoblash.
(11.1)
(11.2)
11.3-jadval
Punkt nomi
|
Dastlabki tenglash-tirilgan burchaklar
|
X
|
ctg1
ctg2
|
Y
|
V
A
D
S
V
D
|
14003403
20 00 39 6
38 42 06 2
24 33 54 8
|
6 124 055.26
6 114 256.42
6 117 470.61
6 114 518.77
6 124 055.26
6 117 470.81
|
+2.745 830
+3.992 610
+6.738 440
+2.187 690
+1.248 128
+3.435 818
|
7 287 996.75
7 282 749.44
7 286 341.83
7 289 756.85
7 287 996.75
7 286 341.84
|
O‘rtachasi XD= 6 117 470.71 YD= 7 286 341.84
Tuzatma tenglamasini «a» va «v» koeffitsiyentlarni va direksion burchaklarning taqribiy qiymatlarini hisoblash.
Taqribiy direksion burchaklar teskari geodezik masala yechish orqali formula bilan yetti xonali logarifm jadvaldan foydalanib topiladi. Ishchi formulasi:
(11.3) Direksion burchaklar 0,1'' aniqlikda hisoblanadi.
«a» va «b» koeffitsiyentlari quyidagi formula bilan topiladi:
; (11.4)
Taqribiy direksion burchaklar va “a” i “v” koeffitsiyentlarni hisoblash jadvali.
11.4-jadval
Punkt nomi
Formula elem.
|
D
A
|
D
V
|
D
S
|
X2
X1
X=X2-X1
|
6 114 256.42
6 117 470.71
-3 214.29
|
6 124 055.26
6 117 740.71
+6 584.55
|
6 114 518.77
6 117 740.71
-2 951.94
|
Y2
Y1
Y= Y2- Y1
|
7 282 749.44
7 286 341.84
-3 592.40
|
7 287 996.75
7 286 341.84
+1 654.91
|
7 289 756.85
7 286 341.84
+3 415.01
|
lg Y
lg X
lg tg
r
|
3.555 3847
3.507 0850
0.048 2997
48010' 46.3''
228 10 46.3
|
3.218 7744
3.818 5261
9.400 2483
14006'29.0''
14 06 29.0
|
3.533 3920
3.470 1075
0.063 2845
49009'35.2''
130 50 24.8
|
lg Y
lg sin
lgd
|
3.5554
9.8723
3.6831
|
3.2188
9.3869
3.8319
|
3.5334
9.8788
3.6546
|
lg a
lg sin
dop. lgd
lg ( )
lg cos
lg v
|
0.5036
9.8723
6.3169
4.3144
9.8240
0.4553
|
9.8695
9.3869
6.1682
4.3144
9.3867
0.4693
|
0.5386
9.8788
6.3454
4.3144
9.8155
0.4753
|
a
v
|
-3.19
+2.85
|
+0.74
-2.95
|
+3.46
+2.99
|
Tuzatma tenglamasining ozod xadlarini hisoblash
11.5-jadval
Punktlar nomi
|
Yo‘nal. nomi
|
Direksion burchaklar
'
|
Burchak-lar №
|
Hisoblangan burchaklar
|
O‘lchangan burchaklar
|
Ozod xadlari
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
D
|
A
V
S
A
|
228010’46.”3
14 06 29.0
130 50 24.8
228 10 46.3
|
8
9
7
|
145055’42.”7
116 43 55.8
97 20 21.5
|
145055’40.”8
116 43 58.1
97 20 21.1
|
+1.”9
-2.3
+0.4
|
A
|
V
D
S
|
28 10 09.1
48 10 46.3
87 51 21.3
|
1
2
|
20 00 37.2
39 40 35.0
|
20 00 40.2
39 40 34.9
|
-3.0
+0.1
|
V
|
S
D
A
|
169 32 34.4
194 06 29.0
208 10 09.1
|
4
3
|
24 33 54.6
14 03 40.1
|
24 33 53.9
14 03 41.0
|
+0.7
-0.9
|
S
|
A
D
V
|
267 51 21.3
310 50 24.8
349 32 34.4
|
6
5
|
42 59 03.5
38 42 09.6
|
42 59 03.9
38 42 05.2
|
-0.4
+4.4
|
Nazorat savollari:
III klass triangulyatsiya to‘rini qanday barpo etiladi?
Nechi xil triangulyatsiya to’ri bor?
Direksion burchak qanday topiladi?
12-amaliy mashg‘ulot.
Triangulyatsiya to‘rini korrelat usuli bilan tenglashtirish
12.1-rasm. Triangulyatsiya to‘ri sxemasi.
Boshlang‘ich ma’lumotlar
Boshlang‘ich punktlarning koordinatalari:
12.1-jadval
Punkt nomlari
|
X
|
Y
|
A
|
5932939,91
|
9652136,89
|
V
|
5926845,17
|
9637526,94
|
S
|
5935105,4
|
9640836,23
|
D
|
5945311,8
|
9640836,23
|
Tekislikka reduksiyalangan va belgilar markaziga keltirilgan burchaklar 12.2-jadvalda keltirilgan.
12.2-jadval.
-
Uchburchaklar №
|
Burchaklar №
|
Keltirilgan burchaklar.
|
I
|
1
2
11
|
|
II
|
3
4
12
|
|
III
|
5
6
13
|
|
IV
|
7
8
14
|
|
V
|
9
10
15
|
|
I. Boshlang‘ich tomonlar direksion burchagini va uzunligini hisoblash 12.3-jadvalda keltirilgan
12.3-jadval
Formula elementlari
|
A
V
|
V
S
|
S
D
|
Δ X
|
|
|
|
Δ Y
|
|
|
|
tg α
|
|
|
|
α
|
|
|
|
Sin α
|
|
|
|
Cos α
|
|
|
|
S1 (m)
|
|
|
|
S2 (m)
|
|
|
|
Ssr. (m)
|
|
|
|
lg Ssr
|
|
|
|
Tekshirish:
Δ X+ Δ Y
|
+ 20704,69
|
- 5398,12
|
- 16377,90
|
Δ X- Δ Y
|
- 8515,21
|
- 11122,44
|
- 4034,90
|
tg (α + 45°)
|
- 2,431495
|
+ 0,485336
|
+ 4,059060
|
α + 45°
|
112° 21' 21,"15
|
205° 53°20,"29
|
256° 09' 36,"29
|
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