Расчёт режимов резания. Курсовое и дипломное проектирование по технологии машиностроения. Учебное пособие
.pdf6.5. ȼɵɱɢɫɥɟɧɢɟ ɫɤɨɪɨɫɬɢ ɪɟɡɚɧɢɹ
ɋɤɨɪɨɫɬɶ ɪɟɡɚɧɢɹ X (ɦ/ɦɢɧ) ɧɚɡɧɚɱɚɟɬɫɹ ɩɨ ɧɚɢɛɨɥɶɲɟɦɭ ɞɢɚɦɟɬɪɭ ɡɭɛɰɨɜ ɮɪɟɡɵ ɢ ɜɵɱɢɫɥɹɟɬɫɹ ɩɨ ɫɥɟɞɭɸɳɟɣ ɮɨɪɦɭɥɟ:
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C Dq |
Kɢ Kɦ K |
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X |
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M |
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T m t x szy zn Bz |
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ɝɞɟ D – ɧɚɪɭɠɧɵɣ ɞɢɚɦɟɬɪ ɮɪɟɡɵ, ɦɦ;
T – ɫɬɨɣɤɨɫɬɶ ɮɪɟɡɵ, ɦɢɧ; t – ɝɥɭɛɢɧɚ ɪɟɡɚɧɢɹ, ɦɦ; sz – ɩɨɞɚɱɚ ɧɚ ɡɭɛ, ɦɦ/ɡɭɛ;
CX, Kɢ, Kɦ, KM – ɤɨɷɮɮɢɰɢɟɧɬɵ; q, m, x, y, n, z – ɩɨɤɚɡɚɬɟɥɢ ɫɬɟɩɟɧɢ.
ɑɢɫɥɨɜɵɟ ɡɧɚɱɟɧɢɹ ɤɨɷɮɮɢɰɢɟɧɬɚ CX ɩɪɢɜɟɞɟɧɵ ɜ ɬɚɛɥɢɰɟ 6.5. Ɂɧɚɱɟɧɢɹ ɩɨɤɚɡɚɬɟɥɟɣ ɫɬɟɩɟɧɢ q, m, x, y, n, z ɞɚɧɵ ɜ ɬɚɛɥɢɰɟ 6.6.
Ʉɨɷɮɮɢɰɢɟɧɬ Kɢ ɭɱɢɬɵɜɚɟɬ ɜɥɢɹɧɢɟ ɦɚɪɤɢ ɢɧɫɬɪɭɦɟɧɬɚɥɶɧɨɣ ɫɬɚɥɢ ɧɚ ɫɤɨɪɨɫɬɶ ɮɪɟɡɟɪɨɜɚɧɢɹ. ȿɝɨ ɡɧɚɱɟɧɢɹ ɩɪɢɜɟɞɟɧɵ ɜ ɬɚɛɥɢɰɟ 6.7.
Ʉɨɷɮɮɢɰɢɟɧɬ Kɦ ɭɱɢɬɵɜɚɟɬ ɜɥɢɹɧɢɟ ɦɚɪɤɢ ɨɛɪɚɛɚɬɵɜɚɟɦɨɝɨ ɦɚɬɟɪɢɚɥɚ ɧɚ ɫɤɨɪɨɫɬɶ ɮɪɟɡɟɪɨɜɚɧɢɹ. ȿɝɨ ɡɧɚɱɟɧɢɹ ɩɪɢɜɟɞɟɧɵ ɜ ɬɚɛɥɢɰɟ 6.8.
Ʉɨɷɮɮɢɰɢɟɧɬ KM ɭɱɢɬɵɜɚɟɬ ɜɥɢɹɧɢɟ ɭɝɥɚ ɜ ɩɥɚɧɟ M ɭɝɥɨɜɨɣ ɤɪɨɦɤɢ ɧɚ ɫɤɨɪɨɫɬɶ ɮɪɟɡɟɪɨɜɚɧɢɹ. ȿɝɨ ɡɧɚɱɟɧɢɹ ɩɪɢɜɟɞɟɧɵ ɜ ɬɚɛɥɢɰɟ 6.9.
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Ɍɚɛɥɢɰɚ 6.5 |
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Ɂɧɚɱɟɧɢɹ ɤɨɷɮɮɢɰɢɟɧɬɚ CX ɜ ɮɨɪɦɭɥɟ (6.2) |
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ɋɬɚɥɶ ɭɝɥɟɪɨɞɢɫɬɚɹ |
ɑɭɝɭɧ ɫɟɪɵɣ, |
ɑɭɝɭɧ ɤɨɜɤɢɣ, |
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Ɇɚɬɟɪɢɚɥ |
Vɜɪ = 75 ɤȽ/ɦɦ2 |
HB = 190 ɤȽ/ɦɦ2 |
HB = 160 ɤȽ/ɦɦ2 |
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Ɍɢɩ ɮɪɟɡɵ |
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ɮɪɟɡɵ |
sz |
CX |
sz |
CX |
sz |
CX |
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ɋɬɚɥɶ |
> 0,1 |
35,4 |
> 0,15 |
27 |
> 0,1 |
49,5 |
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d 0,1 |
55,0 |
d 0,15 |
57,6 |
d 0,1 |
77,0 |
ɐɢɥɢɧɞɪɢɱɟɫɤɢɟ |
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> 0,15 |
7180 |
– |
– |
– |
– |
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d 0,15 |
13600 |
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– |
– |
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ɋɬɚɥɶ |
– |
49 |
– |
72 |
– |
68,5 |
Ʉɨɧɰɟɜɵɟ |
ɛɵɫɬɪɨɪɟɠɭɳɚɹ |
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ɋɬɚɥɶ |
> 0,1 |
41 |
– |
42 |
> 0,1 |
57,4 |
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ɛɵɫɬɪɨɪɟɠɭɳɚɹ |
d 0,1 |
64,7 |
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d 0,1 |
90,5 |
Ɍɨɪɰɟɜɵɟ |
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0,08–0,2 |
300 |
> 0,15 |
176,5 |
– |
– |
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Ɍɜɟɪɞɵɣ ɫɩɥɚɜ |
– |
– |
d 0,15 |
306,5 |
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– |
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Ⱦɢɫɤɨɜɵɟ |
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ɋɬɚɥɶ |
– |
68,5 |
– |
72 |
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95,8 |
ɰɟɥɶɧɵɟ |
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ɫ ɩɪɹɦɵɦ ɡɭɛɨɦ |
ɛɵɫɬɪɨɪɟɠɭɳɚɹ |
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Ⱦɢɫɤɨɜɵɟ |
ɋɬɚɥɶ |
> 0,1 |
48,5 |
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85 |
> 0,1 |
68 |
ɫɨ ɜɫɬɚɜɧɵɦɢ |
ɛɵɫɬɪɨɪɟɠɭɳɚɹ |
d 0,1 |
75,5 |
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– |
d 0,1 |
105,8 |
ɡɭɛɶɹɦɢ |
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0,08–0,12 |
40 |
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– |
– |
– |
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Ɍɜɟɪɞɵɣ ɫɩɥɚɜ |
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61 |
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Ɉɤɨɧɱɚɧɢɟ ɬɚɛɥɢɰɵ 6.5
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ɋɬɚɥɶ ɭɝɥɟɪɨɞɢɫɬɚɹ |
ɑɭɝɭɧ ɫɟɪɵɣ, |
ɑɭɝɭɧ ɤɨɜɤɢɣ, |
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Ɇɚɬɟɪɢɚɥ |
Vɜɪ |
= 75 ɤȽ/ɦɦ2 |
HB = 190 ɤȽ/ɦɦ2 |
HB = 160 ɤȽ/ɦɦ2 |
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Ɍɢɩ ɮɪɟɡɵ |
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ɮɪɟɡɵ |
sz |
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CX |
sz |
CX |
sz |
CX |
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ɉɪɨɪɟɡɧɵɟ |
ɋɬɚɥɶ |
– |
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53 |
– |
30 |
– |
74 |
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ɢ ɨɬɪɟɡɧɵɟ |
ɛɵɫɬɪɨɪɟɠɭɳɚɹ |
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Ɏɚɫɨɧɧɵɟ |
ɋɬɚɥɶ |
– |
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53 |
– |
– |
– |
– |
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ɪɚɞɢɭɫɧɵɟ |
ɛɵɫɬɪɨɪɟɠɭɳɚɹ |
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Ɏɚɫɨɧɧɵɟ |
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ɪɚɞɢɭɫɧɵɟ |
ɋɬɚɥɶ |
– |
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44 |
– |
– |
– |
– |
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ɜɨɝɧɭɬɵɟ |
ɛɵɫɬɪɨɪɟɠɭɳɚɹ |
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ɢ ɭɝɥɨɜɵɟ |
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ɉɪɢɦɟɱɚɧɢɟ |
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ɉɪɢ ɪɚɫɱɟɬɟ ɧɟɤɨɬɨɪɵɯ ɪɟɠɢɦɨɜ ɮɪɟɡɟɪɨɜɚɧɢɹ ɤɨɷɮɮɢɰɢɟɧɬ CX ɧɟɨɛɯɨɞɢɦɨ ɭɦɧɨɠɚɬɶ ɧɚ ɤɨɷɮɮɢɰɢɟɧɬ K. Ɍɚɤ, ɩɪɢ ɮɪɟɡɟɪɨɜɚɧɢɢ ɡɚ ɨɞɢɧ ɩɪɨɯɨɞ, ɤɨɝɞɚ ɩɪɟɞɴɹɜɥɹɸɬɫɹ ɩɨɜɵɲɟɧɧɵɟ ɬɪɟɛɨɜɚɧɢɹ ɤ ɲɟɪɨɯɨɜɚɬɨɫɬɢ ɨɛɪɚɛɨɬɚɧɧɨɣ ɩɨɜɟɪɯɧɨɫɬɢ, K = 0,8. ɉɪɢ ɮɪɟɡɟɪɨɜɚɧɢɢ ɮɪɟɡɚɦɢ ɢɡ ɛɵɫɬɪɨɪɟɠɭɳɟɣ ɫɬɚɥɢ ɛɟɡ ɨɯɥɚɠɞɟɧɢɹ K = 0,5. ɉɪɢ ɮɪɟɡɟɪɨɜɚɧɢɢ ɮɪɟɡɚɦɢ ɢɡ ɛɵɫɬɪɨɪɟɠɭɳɟɣ ɫɬɚɥɢ ɜ ɧɚɩɪɚɜɥɟɧɢɢ ɩɨɞɚɱɢ K = 1,5; ɰɢɥɢɧɞɪɢɱɟɫɤɢɦɢ ɬɜɟɪɞɨɫɩɥɚɜɧɵɦɢ ɮɪɟɡɚɦɢ ɜ ɧɚɩɪɚɜɥɟɧɢɢ ɩɨɞɚɱɢ K = 1,25. ɉɪɢ ɮɪɟɡɟɪɨɜɚɧɢɢ ɩɨ ɤɨɪɤɟ K = 0,6.
Ɍɚɛɥɢɰɚ 6.6 Ɂɧɚɱɟɧɢɹ ɩɨɤɚɡɚɬɟɥɟɣ ɫɬɟɩɟɧɢ q, m, x, y, n, z ɜ ɮɨɪɦɭɥɟ (6.2)
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Ɉɛɪɚɛɚɬɵɜɚɟɦɵɣ |
Ɇɚɬɟɪɢɚɥ |
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ɉɨɤɚɡɚɬɟɥɶ ɫɬɟɩɟɧɢ |
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Ɍɢɩ ɮɪɟɡɵ |
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sz |
y |
m |
q |
n |
z |
x |
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ɦɟɬɚɥɥ |
ɮɪɟɡɵ |
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ɐɢɥɢɧɞɪɢɱɟɫɤɢɟ, |
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ɋɬɚɥɶ |
d 0,1 |
0,2 |
– |
– |
– |
– |
– |
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> 0,1 |
0,4 |
0,33 |
0,45 |
0,1 |
0,1 |
0,3 |
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ɤɨɧɰɟɜɵɟ, |
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ɛɵɫɬɪɨɪɟɠɭɳɚɹ |
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ɋɬɚɥɶ |
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d 0,15 |
0,35 |
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– |
– |
– |
– |
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ɮɚɫɨɧɧɵɟ |
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Ɍɜɟɪɞɵɣɫɩɥɚɜ |
> 0,15 |
0,6 |
0,6 |
0,25 |
0,18 |
0,5 |
0,45 |
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ɐɢɥɢɧɞɪɢɱɟɫɤɢɟ, |
ɑɭɝɭɧ |
ɋɬɚɥɶ |
d 0,15 |
0,2 |
– |
– |
– |
– |
– |
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> 0,15 |
0,6 |
0,25 |
0,7 |
0,3 |
0,3 |
0,5 |
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ɤɨɧɰɟɜɵɟ, |
ɫɟɪɵɣ |
ɛɵɫɬɪɨɪɟɠɭɳɚɹ |
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ɑɭɝɭɧ |
ɋɬɚɥɶ |
d 0,1 |
0,2 |
– |
– |
– |
– |
– |
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ɮɚɫɨɧɧɵɟ |
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> 0,1 |
0,4 |
0,33 |
0,45 |
0,1 |
0,1 |
0,3 |
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ɤɨɜɤɢɣ |
ɛɵɫɬɪɨɪɟɠɭɳɚɹ |
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0,04– |
0,1 |
0,2 |
0,2 |
– |
0,1 |
0,2 |
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0,08 |
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Ɍɜɟɪɞɨɫɩɥɚɜɧɵɟ |
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ɬɨɪɰɟɜɵɟ |
0,08– |
0,4 |
– |
– |
– |
– |
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Ɍɨɪɰɟɜɵɟ |
ɋɬɚɥɶ |
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0,2 |
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ɞɢɫɤɨɜɵɟ |
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Ɍɜɟɪɞɨɫɩɥɚɜɧɵɟ |
0,04– |
0,47 |
0,35 |
0,3 |
– |
0,1 |
0,5 |
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0,09 |
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ɬɪɟɯɫɬɨɪɨɧɧɢɟ |
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ɞɢɫɤɨɜɵɟ |
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ɢɩɪɨɪɟɡɧɵɟ |
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ɋɬɚɥɶ |
– |
0,4 |
0,15 |
0,2 |
0,1 |
0,5 |
0,5 |
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ɑɭɝɭɧ |
ɛɵɫɬɪɨɪɟɠɭɳɚɹ |
– |
– |
– |
– |
– |
0,1* |
0,1** |
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ɫɟɪɵɣ |
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d 0,15 |
0,3 |
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– |
– |
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Ɍɜɟɪɞɵɣ ɫɩɥɚɜ |
> 0,15 |
0,56 |
0,35 |
0,25 |
– |
0,15 |
0,2 |
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Ɉɤɨɧɱɚɧɢɟ ɬɚɛɥɢɰɵ 6.6
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Ɉɛɪɚɛɚɬɵɜɚɟɦɵɣ |
Ɇɚɬɟɪɢɚɥ |
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ɉɨɤɚɡɚɬɟɥɶ ɫɬɟɩɟɧɢ |
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Ɍɢɩ ɮɪɟɡɵ |
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sz |
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q |
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ɦɟɬɚɥɥ |
ɮɪɟɡɵ |
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Ɍɨɪɰɟɜɵɟ, |
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d 0,1 |
0,4 |
0,2 |
0,25 |
0,1 |
0,3 |
0,3 |
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ɞɢɫɤɨɜɵɟ |
ɑɭɝɭɧ |
ɋɬɚɥɶ |
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ɬɪɟɯɫɬɨɪɨɧɧɢɟ |
ɤɨɜɤɢɣ |
ɛɵɫɬɪɨɪɟɠɭɳɚɹ |
> 0,1 |
0,2 |
– |
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0,1* |
0,15** |
ɢɩɪɨɪɟɡɧɵɟ |
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ɍɫɥɨɜɧɵɟ ɨɛɨɡɧɚɱɟɧɢɹ: *ɉɪɨɪɟɡɧɵɟ. **Ɍɨɪɰɟɜɵɟ.
Ɍɚɛɥɢɰɚ 6.7
Ɂɧɚɱɟɧɢɹ ɤɨɷɮɮɢɰɢɟɧɬɚ Kɢ ɜ ɮɨɪɦɭɥɟ (6.2)
Ɇɚɪɤɚ ɢɧɫɬɪɭɦɟɧɬɚɥɶɧɨɣ ɫɬɚɥɢ |
Ɋ18, Ɋ9 |
9ɏɋ |
ɍ10Ⱥ, ɍ12Ⱥ |
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Ɂɧɚɱɟɧɢɟ Kɢ |
1,0 |
0,6 |
0,5 |
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Ɇɚɪɤɚ ɬɜɟɪɞɨɝɨ ɫɩɥɚɜɚ ɬɢɩɚ ɌɄ |
Ɍ15Ʉ6 |
Ɍ14Ʉ8 |
Ɍ5Ʉ7 |
Ɍ5Ʉ10 |
Ɂɧɚɱɟɧɢɟ Kɢ |
1,0 |
0,94 |
0,82 |
0,74 |
Ɇɚɪɤɚ ɬɜɟɪɞɨɝɨ ɫɩɥɚɜɚ ɬɢɩɚ ȼɄ |
ȼɄ8 |
ȼɄ6 |
ȼɄ3 |
ȼɄ2 |
Ɂɧɚɱɟɧɢɟ Kɢ ɩɪɢ sz = 0,2 ɦɦ/ɡɭɛ |
1,0 |
1,26 |
1,58 |
1,58 |
Ɂɧɚɱɟɧɢɟ Kɢ ɩɪɢ sz = 0,05 ɦɦ/ɡɭɛ |
1,0 |
1,47 |
1,58 |
1,2 |
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Ɂɧɚɱɟɧɢɹ ɤɨɷɮɮɢɰɢɟɧɬɚ Kɦ ɜ ɮɨɪɦɭɥɟ (6.2) |
Ɍɚɛɥɢɰɚ 6.8 |
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Ɏɨɪɦɭɥɚ ɞɥɹ ɪɚɫɱɟɬɚ |
Ɂɧɚɱɟɧɢɟ |
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Ɉɛɪɚɛɚɬɵɜɚɟɦɵɣ ɦɟɬɚɥɥ |
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ɤɨɷɮɮɢɰɢɟɧɬɚ Kɦ |
ɤɨɷɮɮɢɰɢɟɧɬɚ C1 |
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ɍɝɥɟɪɨɞɢɫɬɵɟ ɫɬɚɥɢ (ɋ 0,6 %) |
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1,0 |
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ɍɝɥɟɪɨɞɢɫɬɵɟ ɫɬɚɥɢ (ɋ > 0,6 %) |
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0,8 |
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ɏɪɨɦɢɫɬɵɟ ɫɬɚɥɢ |
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ɋ 70x |
0,8 |
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ɏɪɨɦɨɧɢɤɟɥɟɜɵɟ |
ɯɪɨɦɨɜɚɧɚɞɢɟɜɵɟ |
ɯɪɨɦɨ |
Kɦ |
1 |
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Vɜɪx |
0,75 |
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ɦɨɥɢɛɞɟɧɨɜɵɟ, ɯɪɨɦɨɧɢɤɟɥɟɦɨɥɢɛɞɟɧɨɜɵɟ, |
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ɯɪɨɦɨɜɨɥɶɮɪɚɦɨɜɵɟ ɢ ɧɢɤɟɥɟɜɵɟ ɫɬɚɥɢ |
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ɏɪɨɦɨɦɨɥɢɛɞɟɧɨɚɥɸɦɢɧɢɟɜɵɟ, ɦɚɪɝɚɧɰɨɜɢɫɬɵɟ, |
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0,7 |
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ɯɪɨɦɨɦɚɪɝɚɧɰɨɜɢɫɬɵɟ ɢ ɤɪɟɦɧɟɦɚɪɝɚɧɰɨɜɢɫɬɵɟ |
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ɏɪɨɦɨɤɪɟɦɧɟɦɚɪɝɚɧɰɨɜɢɫɬɵɟ |
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0,8 |
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ɂɧɫɬɪɭɦɟɧɬɚɥɶɧɵɟ ɭɝɥɟɪɨɞɢɫɬɵɟ |
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1,0 |
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ɂɧɫɬɪɭɦɟɧɬɚɥɶɧɵɟ ɥɟɝɢɪɨɜɚɧɧɵɟ |
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ɋ1 180 |
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0,7 |
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ɂɧɫɬɪɭɦɟɧɬɚɥɶɧɵɟ ɛɵɫɬɪɨɪɟɠɭɳɢɟ |
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Kɦ |
0,5 |
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ɇɟɪɠɚɜɟɸɳɢɟ, ɠɚɪɨɭɩɨɪɧɵɟ ɫɬɚɥɢ |
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HB |
0,4 |
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3,0 |
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Ʌɚɬɭɧɶ |
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ɋɢɥɭɦɢɧ, ɞɭɪɚɥɸɦɢɧ |
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5,0 |
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ɗɥɟɤɬɪɨɧ |
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7,0 |
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ɑɭɝɭɧ ɫɟɪɵɣ |
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Kɦ |
ɋ1 180 |
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1,0 |
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1,0 |
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ɑɭɝɭɧ ɤɨɜɤɢɣ |
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HB |
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Ȼɪɨɧɡɚ |
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3,0 |
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ɉɪɢɦɟɱɚɧɢɟ
ȼ ɮɨɪɦɭɥɟ ɞɥɹ ɤɨɷɮɮɢɰɢɟɧɬɚ Kɦ ɩɨɤɚɡɚɬɟɥɶ ɫɬɟɩɟɧɢ x ɢɦɟɟɬ ɡɧɚɱɟɧɢɹ:
1)ɞɥɹ ɦɚɥɨɭɝɥɟɪɨɞɢɫɬɨɣ ɫɬɚɥɢ (Vɜɪ = 30–50 ɤȽ/ɦɦ2) x = –1;
2)ɞɥɹ ɭɝɥɟɪɨɞɢɫɬɨɣ ɢ ɥɟɝɢɪɨɜɚɧɧɨɣ ɫɬɚɥɢ (Vɜɪ = 55–85 ɤȽ/ɦɦ2) x = 1;
3)ɞɥɹ ɜɵɫɨɤɨɥɟɝɢɪɨɜɚɧɧɨɣ ɫɬɚɥɢ (Vɜɪ = 90–140 ɤȽ/ɦɦ2) x = 2.
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Ɍɚɛɥɢɰɚ 6.9 |
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Ɂɧɚɱɟɧɢɹ ɤɨɷɮɮɢɰɢɟɧɬɚ KM |
ɜ ɮɨɪɦɭɥɟ (6.2) |
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Ƚɥɚɜɧɵɣ ɭɝɨɥ ɜ ɩɥɚɧɟ M ɭɝɥɨɜɨɣ ɤɪɨɦɤɢ, ɝɪɚɞ. |
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Ɍɢɩ ɮɪɟɡɵ |
90 |
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60 |
45 |
30 |
20 |
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Ɍɨɪɰɟɜɵɟ |
0,96 |
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1,00 |
1,06 |
1,18 |
1,30 |
Ⱦɢɫɤɨɜɵɟ ɞɜɭɯɫɬɨɪɨɧɧɢɟ ɢ ɤɨɧɰɟɜɵɟ |
1,00 |
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1,05 |
1,10 |
1,23 |
1,37 |
ȼɵɛɨɪ ɫɤɨɪɨɫɬɟɣ ɪɟɡɚɧɢɹ ɢ ɩɨɞɚɱ ɩɪɢ ɫɤɨɪɨɫɬɧɨɦ ɮɪɟɡɟɪɨɜɚɧɢɢ ɮɪɟɡɚɦɢ ɫɪɟɠɭɳɢɦɢɩɥɚɫɬɢɧɤɚɦɢɢɡɬɜɟɪɞɨɝɨɫɩɥɚɜɚɦɨɠɧɨɩɪɨɢɡɜɨɞɢɬɶɩɨɬɚɛɥɢɰɟ6.10.
Ɍɚɛɥɢɰɚ 6.10 ɋɪɟɞɧɢɟ ɡɧɚɱɟɧɢɹ ɫɤɨɪɨɫɬɢ ɪɟɡɚɧɢɹ ɢ ɩɨɞɚɱɢ ɩɪɢ ɫɤɨɪɨɫɬɧɨɦ ɮɪɟɡɟɪɨɜɚɧɢɢ
ɮɪɟɡɚɦɢ, ɨɫɧɚɳɟɧɧɵɦɢ ɩɥɚɫɬɢɧɤɚɦɢ ɢɡ ɬɜɟɪɞɨɝɨ ɫɩɥɚɜɚ
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Ɉɛɪɚɛɚɬɵɜɚɟɦɵɣ ɦɟɬɚɥɥ |
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Ɋɟɠɢɦ |
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Ɍɜɟɪɞɵɣ ɫɩɥɚɜ Ɍ15Ʉ6 |
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Ɍɜɟɪɞɵɣ ɫɩɥɚɜ ȼɄ8 |
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ɪɟɡɚɧɢɹ |
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ɋɬɚɥɶ ɭɝɥɟɪɨɞɢɫɬɚɹ |
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ɋɬɚɥɶ ɥɟɝɢɪɨɜɚɧɧɚɹ |
ɑɭɝɭɧ |
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HB 200 |
HB > 200 |
HB 300 |
300 < HB 400 |
HB > 400 |
HB 200 |
HB > 200 |
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X, ɦ/ɦɢɧ |
200–220 |
150–180 |
150–200 |
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110–150 |
75–100 |
120–150 |
100–120 |
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sz, ɦɦ/ɡɭɛ |
0,2–0,15 |
0,12–0,15 |
0,1–0,12 |
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0,07–0,1 |
0,05–0,08 |
0,2–0,4 |
0,15–0,3 |
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ɉɪɢɦɟɱɚɧɢɹ:
1.ɍɤɚɡɚɧɧɵɟ ɪɟɠɢɦɵ ɪɟɡɚɧɢɹ ɞɚɧɵ ɞɥɹ ɫɬɨɣɤɨɫɬɢ ɮɪɟɡ T = (1,0–1,5)ÂD, ɦɢɧ.
2.ɑɢɫɬɨɜɨɟ ɫɤɨɪɨɫɬɧɨɟ ɮɪɟɡɟɪɨɜɚɧɢɟ ɮɪɟɡɚɦɢ ɫ ɩɥɚɫɬɢɧɤɚɦɢ ɢɡ ɬɜɟɪɞɨɝɨ ɫɩɥɚɜɚ ɩɪɨɜɨɞɢɬɫɹ ɞɥɹ ɫɬɚɥɢ ɫɨ ɫɤɨɪɨɫɬɶɸ ɪɟɡɚɧɢɹ X = 300–800 ɦ/ɦɢɧ, ɚ ɞɥɹ ɱɭɝɭɧɚ – ɫɨ ɫɤɨɪɨɫɬɶɸ ɪɟɡɚɧɢɹ
X = 200–300 ɦ/ɦɢɧ.
6.6. ȼɵɱɢɫɥɟɧɢɟ ɫɢɥɵ ɢ ɦɨɦɟɧɬɚ ɪɟɡɚɧɢɹ
Ɂɧɚɱɟɧɢɟ ɬɚɧɝɟɧɰɢɚɥɶɧɨɣ ɫɨɫɬɚɜɥɹɸɳɟɣ ɫɢɥɵ ɪɟɡɚɧɢɹ Pz ɩɪɢ ɮɪɟɡɟɪɨɜɚɧɢɢ ɜɵɱɢɫɥɹɸɬ ɩɨ ɮɨɪɦɭɥɟ:
P |
C t x s y |
B z |
Dq , |
(6.3) |
z |
z |
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ɝɞɟ B – ɲɢɪɢɧɚ ɮɪɟɡɵ, ɦɦ;
C – ɤɨɷɮɮɢɰɢɟɧɬ;
x, y, z, q – ɩɨɤɚɡɚɬɟɥɢ ɫɬɟɩɟɧɢ.
ɑɢɫɥɨɜɵɟ ɡɧɚɱɟɧɢɹ ɤɨɷɮɮɢɰɢɟɧɬɚ C ɢ ɩɨɤɚɡɚɬɟɥɟɣ ɫɬɟɩɟɧɢ x, y, z, q ɩɪɢɜɟɞɟɧɵ ɜ ɬɚɛɥɢɰɟ 6.11. Ɂɧɚɱɟɧɢɟ ɤɨɷɮɮɢɰɢɟɧɬɚ C ɢɡɦɟɧɹɟɬɫɹ ɩɪɢ ɢɡɦɟɧɟɧɢɢ ɡɧɚɱɟɧɢɣ ɩɟɪɟɞɧɟɝɨ ɭɝɥɚ J ɪɟɠɭɳɟɣ ɤɪɨɦɤɢ ɮɪɟɡɵ ɢ ɫɤɨɪɨɫɬɢ ɪɟɡɚɧɢɹ X, ɱɬɨ ɭɱɢɬɵɜɚɟɬɫɹ ɭɦɧɨɠɟɧɢɟɦ ɤɨɷɮɮɢɰɢɟɧɬɚ C ɧɚ ɩɨɩɪɚɜɨɱɧɵɟ ɤɨɷɮɮɢɰɢɟɧɬɵ K1 ɢ K2, ɡɧɚɱɟɧɢɹ ɤɨɬɨɪɵɯ ɩɪɢɜɟɞɟɧɵ ɜ ɬɚɛɥɢɰɟ 6.12.
64
Ɍɚɛɥɢɰɚ 6.11 Ɂɧɚɱɟɧɢɹ ɤɨɷɮɮɢɰɢɟɧɬɚ C ɢ ɩɨɤɚɡɚɬɟɥɟɣ ɫɬɟɩɟɧɢ x, y, z, q
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Ʉɨɷɮɮɢɰɢɟɧɬ, ɩɨɤɚɡɚɬɟɥɢ ɫɬɟɩɟɧɢ |
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Ɉɛɪɚɛɚɬɵɜɚɟɦɵɣ ɦɟɬɚɥɥ ɢ ɬɢɩ ɮɪɟɡɵ |
C |
x |
y |
z |
q |
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ɋɬɚɥɶ ɢ ɫɬɚɥɶɧɨɟ |
ɥɢɬɶɟ |
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ɐɢɥɢɧɞɪɢɱɟɫɤɢɟ, ɤɨɧɰɟɜɵɟ ɢ ɬɨɪɰɟɜɵɟ |
68 |
0,86 |
0,74 |
1,00 |
–0,86 |
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ɩɪɢ ɧɟɫɢɦɦɟɬɪɢɱɧɨɦ ɪɟɡɚɧɢɢ |
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Ɍɨɪɰɟɜɵɟ ɩɪɢ ɫɢɦɦɟɬɪɢɱɧɨɦ ɪɟɡɚɧɢɢ, |
82 |
1,10 |
0,80 |
0,95 |
–1,10 |
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ɞɢɫɤɨɜɵɟ ɢ ɨɬɪɟɡɧɵɟ |
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ɍɝɥɨɜɵɟ |
39 |
0,86 |
0,74 |
1,00 |
–0,86 |
ȼɵɩɭɤɥɵɟ ɢ ɜɨɝɧɭɬɵɟ ɮɚɫɨɧɧɵɟ |
47 |
0,86 |
0,74 |
1,00 |
–0,86 |
ɑɭɝɭɧ |
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ɐɢɥɢɧɞɪɢɱɟɫɤɢɟ, ɤɨɧɰɟɜɵɟ ɢ ɬɨɪɰɟɜɵɟ |
48 |
0,83 |
0,65 |
1,00 |
–0,83 |
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ɩɪɢ ɧɟɫɢɦɦɟɬɪɢɱɧɨɦ ɪɟɡɚɧɢɢ |
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Ɍɨɪɰɟɜɵɟ ɩɪɢ ɫɢɦɦɟɬɪɢɱɧɨɦ ɪɟɡɚɧɢɢ, |
70 |
1,14 |
0,70 |
0,90 |
–1,14 |
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ɞɢɫɤɨɜɵɟ ɢ ɨɬɪɟɡɧɵɟ |
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Ɍɚɛɥɢɰɚ 6.12
Ɂɧɚɱɟɧɢɹ ɩɨɩɪɚɜɨɱɧɵɯ ɤɨɷɮɮɢɰɢɟɧɬɨɜ K1 ɢ K2
ɉɟɪɟɞɧɢɣ ɭɝɨɥ J, ɝɪɚɞ. |
+15 |
+10 |
+5 |
0 |
–5 |
–10 |
–15 |
–20 |
K1 |
0,9 |
1,0 |
1,1 |
1,2 |
1,3 |
1,4 |
1,5 |
1,6 |
ɋɤɨɪɨɫɬɶ ɪɟɡɚɧɢɹ X, ɦ/ɦɢɧ |
50 |
75 |
100 |
125 |
150 |
175 |
200 |
250 |
K2 |
1,0 |
0,98 |
0,96 |
0,94 |
0,92 |
0,90 |
0,88 |
0,85 |
ɉɪɢ ɨɩɬɢɦɚɥɶɧɨɦ ɢɡɧɨɫɟ ɮɪɟɡɵ ɫɢɥɚ ɮɪɟɡɟɪɨɜɚɧɢɹ ɭɜɟɥɢɱɢɜɚɟɬɫɹ:
1)ɩɪɢ ɨɛɪɚɛɨɬɤɟ ɜɹɡɤɢɯ ɫɬɚɥɟɣ – ɧɚ 75 – 90 %;
2)ɩɪɢ ɨɛɪɚɛɨɬɤɟ ɫɪɟɞɧɢɯ ɢ ɬɜɟɪɞɵɯ ɫɬɚɥɟɣ, ɚ ɬɚɤɠɟ ɱɭɝɭɧɨɜ – ɧɚ 20 – 40 %.
ɉɪɢ ɨɛɪɚɛɨɬɤɟ ɚɥɸɦɢɧɢɟɜɵɯ ɫɩɥɚɜɨɜ ɫɢɥɚ ɪɟɡɚɧɢɹ ɫɨɫɬɚɜɥɹɟɬ 25 % ɨɬ ɫɢɥɵ ɪɟɡɚɧɢɹ ɫɬɚɥɢ, ɩɪɢ ɨɛɪɚɛɨɬɤɟ ɛɪɨɧɡɵ – 75 % ɨɬ ɫɢɥɵ ɪɟɡɚɧɢɹ ɱɭɝɭɧɚ.
Ɇɨɦɟɧɬ ɪɟɡɚɧɢɹ M ɩɪɢ ɮɪɟɡɟɪɨɜɚɧɢɢ ɦɨɠɧɨ ɨɩɪɟɞɟɥɢɬɶ ɩɨ ɮɨɪɦɭɥɟ (5.8), ɢɫɩɨɥɶɡɭɹ ɜ ɤɚɱɟɫɬɜɟ ɞɢɚɦɟɬɪɚ D ɧɚɪɭɠɧɵɣ ɞɢɚɦɟɬɪ ɮɪɟɡɵ.
6.7. Ɋɚɫɱɟɬ ɦɨɳɧɨɫɬɢ ɪɟɡɚɧɢɹ
ɗɮɮɟɤɬɢɜɧɚɹ ɦɨɳɧɨɫɬɶ ɪɟɡɚɧɢɹ Nɷ (ɤȼɬ) ɩɪɢ ɮɪɟɡɟɪɨɜɚɧɢɢ:
Nɷ C n t x szy z B z Dq ,
ɝɞɟ n – ɱɚɫɬɨɬɚ ɜɪɚɳɟɧɢɹ ɮɪɟɡɵ, ɨɛ/ɦɢɧ; z – ɱɢɫɥɨ ɡɭɛɶɟɜ ɮɪɟɡɵ;
C – ɤɨɷɮɮɢɰɢɟɧɬ;
x, y, z, q – ɩɨɤɚɡɚɬɟɥɢ ɫɬɟɩɟɧɢ.
n |
1000 X |
, |
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S D |
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(6.4)
(6.5)
65
ɝɞɟ X – ɫɤɨɪɨɫɬɶ ɪɟɡɚɧɢɹ, ɦ/ɦɢɧ;
D – ɧɚɪɭɠɧɵɣ ɞɢɚɦɟɬɪ ɮɪɟɡɵ, ɦɦ.
ɉɨɫɥɟ ɜɵɱɢɫɥɟɧɢɹ ɱɚɫɬɨɬɵ ɜɪɚɳɟɧɢɹ n ɧɚɞɨ ɨɤɪɭɝɥɢɬɶ ɟɟ ɞɨ ɛɥɢɠɚɣɲɟɝɨ ɦɟɧɶɲɟɝɨ ɩɚɫɩɨɪɬɧɨɝɨ ɡɧɚɱɟɧɢɹ ɱɚɫɬɨɬɵ ɜɪɚɳɟɧɢɹ ɲɩɢɧɞɟɥɹ ɫɬɚɧɤɚ.
ɑɢɫɥɨɜɵɟ ɡɧɚɱɟɧɢɹ ɤɨɷɮɮɢɰɢɟɧɬɚ C ɢ ɩɨɤɚɡɚɬɟɥɟɣ ɫɬɟɩɟɧɢ x, y, z, q ɩɪɢɜɟɞɟɧɵ ɜ ɬɚɛɥɢɰɟ 6.13.
Ɍɚɛɥɢɰɚ 6.13 Ɂɧɚɱɟɧɢɹ ɤɨɷɮɮɢɰɢɟɧɬɚ C ɢ ɩɨɤɚɡɚɬɟɥɟɣ ɫɬɟɩɟɧɢ x, y, z, q
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Ʉɨɷɮɮɢɰɢɟɧɬ, ɩɨɤɚɡɚɬɟɥɢ ɫɬɟɩɟɧɢ |
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Ɉɛɪɚɛɚɬɵɜɚɟɦɵɣ ɦɟɬɚɥɥ ɢ ɬɢɩ ɮɪɟɡɵ |
C |
x |
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ɋɬɚɥɶ ɢ ɫɬɚɥɶɧɨɟ |
ɥɢɬɶɟ |
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ɐɢɥɢɧɞɪɢɱɟɫɤɢɟ, ɤɨɧɰɟɜɵɟ ɢ ɬɨɪɰɟɜɵɟ |
3,5Â10-5 |
0,86 |
0,74 |
1,00 |
0,14 |
ɩɪɢ ɧɟɫɢɦɦɟɬɪɢɱɧɨɦ ɪɟɡɚɧɢɢ |
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Ɍɨɪɰɟɜɵɟ ɩɪɢ ɫɢɦɦɟɬɪɢɱɧɨɦ ɪɟɡɚɧɢɢ, |
4,22Â10-5 |
1,10 |
0,80 |
0,95 |
–0,10 |
ɞɢɫɤɨɜɵɟ ɢ ɨɬɪɟɡɧɵɟ |
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ɍɝɥɨɜɵɟ |
2,0Â10-5 |
0,86 |
0,74 |
1,00 |
0,14 |
ȼɵɩɭɤɥɵɟ ɢ ɜɨɝɧɭɬɵɟ ɮɚɫɨɧɧɵɟ |
2,42Â10-5 |
0,86 |
0,74 |
1,00 |
0,14 |
ɑɭɝɭɧ |
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ɐɢɥɢɧɞɪɢɱɟɫɤɢɟ, ɤɨɧɰɟɜɵɟ ɢ ɬɨɪɰɟɜɵɟ |
2,46Â10-5 |
0,83 |
0,65 |
1,00 |
0,13 |
ɩɪɢ ɧɟɫɢɦɦɟɬɪɢɱɧɨɦ ɪɟɡɚɧɢɢ |
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Ɍɨɪɰɟɜɵɟ ɩɪɢ ɫɢɦɦɟɬɪɢɱɧɨɦ ɪɟɡɚɧɢɢ, |
3,6 Â10-5 |
1,14 |
0,70 |
0,90 |
–0,14 |
ɞɢɫɤɨɜɵɟ ɢ ɨɬɪɟɡɧɵɟ |
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Ɇɨɳɧɨɫɬɶ ɧɚ ɩɪɢɜɨɞɟ ɫɬɚɧɤɚ Nɦ ɨɩɪɟɞɟɥɹɟɬɫɹ ɩɨ ɮɨɪɦɭɥɟ (2.19). Ɉɯɥɚɠɞɟɧɢɟ ɩɪɢ ɮɪɟɡɟɪɨɜɚɧɢɢ ɫɬɚɥɢ ɦɨɠɟɬ ɨɫɭɳɟɫɬɜɥɹɬɶɫɹ 3–5%-ɧɵɦ
ɪɚɫɬɜɨɪɨɦ ɷɦɭɥɶɫɨɥɚ ɜ ɜɨɞɟ; ɫɤɨɪɨɫɬɶ ɨɯɥɚɠɞɟɧɢɹ ɧɟ ɦɟɧɟɟ 10 ɥ/ɦɢɧ. Ɉɛɪɚɛɨɬɤɚ ɱɭɝɭɧɚ ɩɪɨɜɨɞɢɬɫɹ ɜɫɭɯɭɸ.
6.8. Ɉɩɪɟɞɟɥɟɧɢɟ ɨɫɧɨɜɧɨɝɨ ɬɟɯɧɨɥɨɝɢɱɟɫɤɨɝɨ ɜɪɟɦɟɧɢ
Ɉɫɧɨɜɧɨɟ ɬɟɯɧɨɥɨɝɢɱɟɫɤɨɟ ɜɪɟɦɹ T0 (ɦɢɧ) ɩɪɢ ɮɪɟɡɟɪɨɜɚɧɢɢ ɨɩɪɟɞɟɥɹɟɬɫɹ ɩɨ ɮɨɪɦɭɥɚɦ, ɩɪɢɜɟɞɟɧɧɵɦ ɜ ɬɚɛɥɢɰɟ 6.14.
Ɍɚɛɥɢɰɚ 6.14 Ɉɫɧɨɜɧɨɟ ɬɟɯɧɨɥɨɝɢɱɟɫɤɨɟ ɜɪɟɦɹ T0 (ɦɢɧ) ɩɪɢ ɮɪɟɡɟɪɨɜɚɧɢɢ
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Ɏɨɪɦɭɥɚ ɜɪɟɦɟɧɢ T0 |
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ɏɚɪɚɤɬɟɪ ɮɪɟɡɟɪɨɜɚɧɢɹ |
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(ɦɢɧ) |
Ɉɛɨɡɧɚɱɟɧɢɹ ɜ ɮɨɪɦɭɥɟ |
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ɉɪɢɩɨɥɧɨɣɨɤɪɭɠɧɨɫɬɢl=SÂd, |
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ɝɞɟd – ɞɢɚɦɟɬɪ, ɢɡɦɟɪɟɧɧɵɣɩɨ |
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l l1 |
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ɩɟɪɢɮɟɪɢɢɮɪɟɡɟɪɭɟɦɨɣɩɨɜɟɪɯɧɨɫɬɢ. |
Ɏɪɟɡɟɪɨɜɚɧɢɟ |
T |
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ɉɪɢɤɨɩɢɪɧɨɦɮɪɟɡɟɪɨɜɚɧɢɢ |
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ɫ ɤɪɭɝɨɜɨɣ ɩɨɞɚɱɟɣ |
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sɦ |
l – ɮɚɤɬɢɱɟɫɤɚɹɞɥɢɧɚɮɪɟɡɟɪɭɟɦɨɣ |
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ɫɬɨɥɚ |
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ɩɨɜɟɪɯɧɨɫɬɢɩɨɤɨɧɬɭɪɭ, ɦɦ; |
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l1 – ɜɪɟɡɚɧɢɟ, ɦɦ; i – ɱɢɫɥɨɩɪɨɯɨɞɨɜ; |
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sɦ – ɦɢɧɭɬɧɚɹɩɨɞɚɱɚ, ɦɦ/ɦɢɧ |
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66 |
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Ɉɤɨɧɱɚɧɢɟ ɬɚɛɥɢɰɵ 6.14 |
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Ɏɨɪɦɭɥɚ ɜɪɟɦɟɧɢ T0 |
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ɏɚɪɚɤɬɟɪ ɮɪɟɡɟɪɨɜɚɧɢɹ |
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(ɦɢɧ) |
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Ɉɛɨɡɧɚɱɟɧɢɹ ɜ ɮɨɪɦɭɥɟ |
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ɐɢɥɢɧɞɪɢɱɟɫɤɨɟ ɢ ɬɨɪɰɟɜɨɟ |
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l – ɞɥɢɧɚ ɮɪɟɡɟɪɨɜɚɧɢɹ, ɦɦ; |
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ɮɪɟɡɟɪɨɜɚɧɢɟ ɫ ɩɪɨɞɨɥɶɧɨɣ |
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l2 – ɩɟɪɟɛɟɝ ɮɪɟɡɵ, ɦɦ; |
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ɢ ɩɨɩɟɪɟɱɧɨɣ ɩɨɞɚɱɚɦɢ: |
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sɦ – ɦɢɧɭɬɧɚɹ ɩɨɞɚɱɚ, ɦɦ/ɦɢɧ: |
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1) ɰɢɥɢɧɞɪɢɱɟɫɤɨɟ ɮɪɟɡɟɪɨɜɚɧɢɟ: |
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sɦ |
sz z n ; |
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sz – ɩɨɞɚɱɚ ɧɚ ɨɞɢɧ ɡɭɛ, ɦɦ/ɡɭɛ; |
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z – ɱɢɫɥɨ ɡɭɛɶɟɜ ɮɪɟɡɵ; |
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n – ɱɚɫɬɨɬɚ ɜɪɚɳɟɧɢɹ, ɨɛ/ɦɢɧ; |
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i – ɱɢɫɥɨ ɩɪɨɯɨɞɨɜ; |
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2) ɫɢɦɦɟɬɪɢɱɧɨɟ ɮɪɟɡɟɪɨɜɚɧɢɟ: |
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l1 – ɜɪɟɡɚɧɢɟ ɮɪɟɡɵ, ɦɦ: |
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T |
l l1 l2 |
i |
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l1c |
t D t , |
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sɦ |
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0,5 D D2 t2 , |
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l1cc |
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l1c |
t D t 2 l ; |
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3) ɧɟɫɢɦɦɟɬɪɢɱɧɨɟ ɮɪɟɡɟɪɨɜɚɧɢɟ: |
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D – |
t – ɝɥɭɛɢɧɚ ɪɟɡɚɧɢɹ, ɦɦ; |
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ɧɚɪɭɠɧɵɣ ɞɢɚɦɟɬɪ ɮɪɟɡɵ ɦɦ |
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Ɏɪɟɡɟɪɨɜɚɧɢɟ ɲɩɨɧɨɱɧɵɯ ɤɚɧɚɜɨɤ |
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l – ɩɨɥɧɚɹ ɞɥɢɧɚ ɲɩɨɧɨɱɧɨɣ |
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ɡɚ ɨɞɢɧ ɩɪɨɯɨɞ: |
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ɤɚɧɚɜɤɢ, ɦɦ; |
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ɤɚɧɚɜɤɚ ɡɚɤɪɵɬɚɹ ɫ ɞɜɭɯ ɫɬɨɪɨɧ |
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l D |
D – ɧɚɪɭɠɧɵɣɞɢɚɦɟɬɪɮɪɟɡɵ, ɦɦ; |
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1) |
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sɦɩ |
h – |
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ɝɥɭɛɢɧɚɲɩɨɧɨɱɧɨɣɤɚɧɚɜɤɢ |
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2) |
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ɦɦ; |
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ɤɚɧɚɜɤɚ |
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ɡɚɤɪɵɬɚɹ ɫ ɨɞɧɨɣ ɫɬɨ |
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l |
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T0 |
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sɦɩ – ɩɪɨɞɨɥɶɧɚɹ ɦɢɧɭɬɧɚɹ |
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ɪɨɧɵ |
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sɦɩ |
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ɩɨɞɚɱɚ, ɦɦ/ɦɢɧ; |
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3) |
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sɦɜ – ɜɟɪɬɢɤɚɥɶɧɚɹ ɦɢɧɭɬɧɚɹ |
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ɤɚɧɚɜɤɚ |
ɨɬɤɪɵɬɚɹ ɫ ɞɜɭɯ ɫɬɨɪɨɧ |
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l 0,5 D |
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T0 |
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ɩɨɞɚɱɚ, ɦɦ/ɦɢɧ |
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sɦɩ |
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Ɏɪɟɡɟɪɨɜɚɧɢɟ ɲɩɨɧɨɱɧɵɯ ɤɚɧɚɜɨɤ |
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l – ɩɨɥɧɚɹ ɞɥɢɧɚ ɲɩɨɧɨɱɧɨɣ |
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ɧɚ ɫɬɚɧɤɚɯ ɫ ɦɚɹɬɧɢɤɨɜɨɣ ɩɨɞɚɱɟɣ |
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ɤɚɧɚɜɤɢ, ɦɦ; |
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ɡɚ ɧɟɫɤɨɥɶɤɨ ɩɪɨɯɨɞɨɜ: |
T |
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nɞɯ |
D – ɧɚɪɭɠɧɵɣɞɢɚɦɟɬɪɮɪɟɡɵ, ɦɦ; |
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ɦɩ |
ɩɪɨɞɨɥɶɧɚɹ ɦɢɧɭɬɧɚɹ |
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ɤɚɧɚɜɤɚ |
ɡɚɤɪɵɬɚɹ ɫ ɞɜɭɯ ɫɬɨɪɨɧ |
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sɦɩ |
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ɩɨɞɚɱɚ, ɦɦ/ɦɢɧ; |
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2) ɤɚɧɚɜɤɚ, ɡɚɤɪɵɬɚɹɫɨɞɧɨɣɫɬɨɪɨɧɵ |
T |
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nɞɯ |
nɞɯ – ɱɢɫɥɨ ɞɜɨɣɧɵɯ ɯɨɞɨɜ: |
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0 |
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sɦɩ |
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nɞɯ |
h |
; |
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3) ɤɚɧɚɜɤɚ, ɨɬɤɪɵɬɚɹ ɫ ɞɜɭɯ ɫɬɨɪɨɧ |
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t |
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l 0,5 D |
nɞɯ |
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h – ɝɥɭɛɢɧɚ ɤɚɧɚɜɤɢ, ɦɦ; |
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t – ɭɝɥɭɛɥɟɧɢɟɲɩɨɧɨɱɧɨɣɤɚɧɚɜɤɢ |
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sɦɩ |
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ɡɚ ɤɚɠɞɵɣ ɞɜɨɣɧɨɣ ɯɨɞ, ɦɦ |
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7.ɉɊɈɌəȽɂȼȺɇɂȿ
7.1.Ƚɟɨɦɟɬɪɢɱɟɫɤɢɟ ɩɚɪɚɦɟɬɪɵ ɪɟɠɭɳɟɣ ɱɚɫɬɢ ɩɪɨɬɹɠɟɤ
Ʉɝɟɨɦɟɬɪɢɱɟɫɤɢɦ ɩɚɪɚɦɟɬɪɚɦ ɪɟɠɭɳɟɣ ɱɚɫɬɢ ɩɪɨɬɹɠɟɤ ɨɬɧɨɫɹɬɫɹ: 1) ɩɟɪɟɞɧɢɣ ɭɝɨɥ J;
2) ɡɚɞɧɢɣ ɭɝɨɥ D;
3) ɛɨɤɨɜɨɣ ɡɚɞɧɢɣ ɭɝɨɥ D1;
4) ɭɝɨɥ ɧɚɤɥɨɧɚ ɡɭɛɶɟɜ ɤ ɨɫɢ ɩɪɨɬɹɠɟɤ O.
ɉɨɞɪɨɛɧɨɟ ɨɩɢɫɚɧɢɟ ɝɟɨɦɟɬɪɢɱɟɫɤɢɯ ɩɚɪɚɦɟɬɪɨɜ ɩɪɨɬɹɠɟɤ ɢ ɩɪɨɲɢɜɨɤ
ɞɚɧɨ ɜ ɫɩɪɚɜɨɱɧɢɤɟ [2] ɢ ɪɚɛɨɬɚɯ [3, 4].
7.2. ɇɚɡɧɚɱɟɧɢɟ ɝɥɭɛɢɧɵ ɪɟɡɚɧɢɹ
Ƚɥɭɛɢɧɚ ɪɟɡɚɧɢɹ t (ɦɦ) ɩɪɢ ɩɪɨɬɹɝɢɜɚɧɢɢ (ɩɪɨɲɢɜɚɧɢɢ) ɨɩɪɟɞɟɥɹɟɬɫɹ ɩɪɢɩɭɫɤɨɦ ɧɚ ɦɟɯɚɧɢɱɟɫɤɭɸ ɨɛɪɚɛɨɬɤɭ ɩɪɨɬɹɠɤɨɣ (ɩɪɨɲɢɜɤɨɣ).
7.3. Ɉɩɪɟɞɟɥɟɧɢɟ ɫɬɨɣɤɨɫɬɢ ɩɪɨɬɹɠɟɤ
ɋɬɨɣɤɨɫɬɶ T (ɦɢɧ) ɩɪɨɬɹɠɟɤ ɢɡɦɟɧɹɟɬɫɹ ɜ ɩɪɟɞɟɥɚɯ ɨɬ 100 ɞɨ 500 ɦɢɧ. ɋɬɨɣɤɨɫɬɶ ɤɚɠɞɨɝɨ ɡɭɛɚ ɩɪɨɬɹɠɤɢ ɨɩɪɟɞɟɥɹɟɬɫɹ ɩɨ ɮɨɪɦɭɥɟ:
T |
i lɞ |
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ɝɞɟ i – ɱɢɫɥɨ ɩɪɨɯɨɞɨɜ (ɪɚɛɨɱɢɯ ɯɨɞɨɜ) ɩɪɨɬɹɠɤɢ; lɞ – ɞɥɢɧɚ ɩɪɨɬɹɝɢɜɚɟɦɨɣ ɩɨɜɟɪɯɧɨɫɬɢ, ɦɦ; X – ɫɤɨɪɨɫɬɶ ɪɟɡɚɧɢɹ, ɦ/ɦɢɧ.
7.4. ȼɵɱɢɫɥɟɧɢɟ ɫɤɨɪɨɫɬɢ ɪɟɡɚɧɢɹ
ɋɤɨɪɨɫɬɶ ɪɟɡɚɧɢɹ X (ɦ/ɦɢɧ) ɩɪɢ ɩɪɨɬɹɝɢɜɚɧɢɢ ɜɵɱɢɫɥɹɟɬɫɹ ɩɨ ɮɨɪɦɭɥɟ:
X |
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ɝɞɟ t – ɝɥɭɛɢɧɚ ɪɟɡɚɧɢɹ, ɦɦ;
az – ɬɨɥɳɢɧɚ ɫɥɨɹ, ɫɪɟɡɚɟɦɨɝɨ ɨɞɧɢɦ ɡɭɛɨɦ ɩɪɨɬɹɠɤɢ, ɦɦ; sz – ɩɨɞɚɱɚ ɧɚ ɡɭɛ, ɦɦ/ɡɭɛ;
C, Kɢ – ɤɨɷɮɮɢɰɢɟɧɬɵ; x, y – ɩɨɤɚɡɚɬɟɥɢ ɫɬɟɩɟɧɢ.
68
Ʉɨɷɮɮɢɰɢɟɧɬ Kɢ ɭɱɢɬɵɜɚɟɬ ɤɚɱɟɫɬɜɨ ɢɧɫɬɪɭɦɟɧɬɚɥɶɧɨɣ ɫɬɚɥɢ, ɢɡ ɤɨɬɨɪɨɣ ɜɵɩɨɥɧɟɧɚ ɪɟɠɭɳɚɹ ɱɚɫɬɶ ɩɪɨɬɹɠɤɢ. Ⱦɥɹ ɫɬɚɥɟɣ ɏȼȽ ɢ ɏȼ5 ɤɨɷɮɮɢɰɢɟɧɬ Kɢ =1,0; ɞɥɹ ɫɬɚɥɢ Ɋ9 ɤɨɷɮɮɢɰɢɟɧɬ Kɢ =1,2; ɞɥɹ ɫɬɚɥɢ Ɋ18 – Kɢ = 1,4.
Ɂɧɚɱɟɧɢɹ ɤɨɷɮɮɢɰɢɟɧɬɚ C ɢ ɩɨɤɚɡɚɬɟɥɟɣ ɫɬɟɩɟɧɢ x, y ɞɚɧɵ ɜ ɬɚɛɥɢɰɟ 7.1.
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Ɂɧɚɱɟɧɢɹ ɤɨɷɮɮɢɰɢɟɧɬɚ C ɢ ɩɨɤɚɡɚɬɟɥɟɣ ɫɬɟɩɟɧɢ x, y |
Ɍɚɛɥɢɰɚ 7.1 |
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HB,ɤȽɌɜɟɪɞɨɫɬɶ/ɦɦ |
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Ɉɞɧɨɲɩɨɧɨɱɧɵɟ ɩɪɨɬɹɠɤɢ |
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Ɉɛɪɚɛɚɬɵɜɚɟɦɵɣ ɦɟɬɚɥɥ |
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Ʉɪɭɝɥɵɟ |
Ɇɧɨɝɨɲɩɨɧɨɱɧɵɟ |
az 0,07; |
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ɩɪɨɬɹɠɤɢ |
ɩɪɨɬɹɠɤɢ |
X 11 ɦ/ɦɢɧ |
X 8 ɦ/ɦɢɧ |
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ɋɬɚɥɶ 45 |
160–180 |
12 |
0,62 |
0,62 |
11 |
0,6 |
0,75 |
7 |
0,87 |
1,4 |
5,5 |
0,87 |
1,4 |
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ɋɬɚɥɶ 45 |
181–207 |
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ɋɬɚɥɶ 40ɏ |
160–190 |
11 |
0,62 |
0,62 |
10 |
0,6 |
0,75 |
6,3 |
0,87 |
1,4 |
5 |
0,87 |
1,4 |
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ɋɬɚɥɶ 20ɏ |
140–170 |
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ɋɬɚɥɶ 12ɏɇ3 |
140–170 |
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ɋɬɚɥɶ 45 |
220–260 |
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ɋɬɚɥɶ 40ɏ |
200–230 |
8 |
0,62 |
0,62 |
7,3 |
0,6 |
0,75 |
4,5 |
0,87 |
1,4 |
3,6 |
0,87 |
1,4 |
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ɋɬɚɥɶ 20ɏ |
180–220 |
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ɋɬɚɥɶ 12ɏɇ3 |
180–220 |
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ɋɬɚɥɶ 40ɏ |
290–330 |
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ɋɬɚɥɶ 20ɏ |
260–290 |
7 |
0,77 |
0,8 |
5,5 |
0,5 |
0,6 |
3,4 |
0,87 |
1,5 |
2,7 |
0,87 |
1,4 |
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ɋɬɚɥɶ 12ɏɇ3 |
260–290 |
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160–180 |
10 |
0,5 |
0,6 |
12,5 |
0,5 |
0,6 |
4,4 |
0,6 |
0,95 |
4,4 |
0,6 |
0,95 |
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190–215 |
8,25 |
0,5 |
0,6 |
10,5 |
0,5 |
0,6 |
3,6 |
0,6 |
0,95 |
3,6 |
0,6 |
0,95 |
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Ɉɯɥɚɠɞɟɧɢɟ ɩɪɢ ɩɪɨɬɹɝɢɜɚɧɢɢ ɩɪɨɢɡɜɨɞɢɬɫɹ ɫɭɥɶɮɨɮɪɟɡɨɥɨɦ ɢɥɢ 20%-ɧɵɦ ɪɚɫɬɜɨɪɨɦ ɷɦɭɥɶɫɨɥɚ ɫ 4 % ɦɵɥɚ. ɋɤɨɪɨɫɬɶ ɨɯɥɚɠɞɟɧɢɹ 10–15 ɥ/ɦɢɧ.
ɂɡɧɨɫ ɩɪɨɬɹɠɟɤ ɢɡɦɟɪɹɟɬɫɹ ɩɨ ɡɚɞɧɢɦ ɩɨɜɟɪɯɧɨɫɬɹɦ ɡɭɛɶɟɜ. Ⱦɨɩɭɫɬɢɦɨɟ ɡɧɚɱɟɧɢɟ ɢɡɧɨɫɚ ɜɧɭɬɪɟɧɧɢɯ ɩɪɨɬɹɠɟɤ G = 0,4 ɦɦ, ɧɚɪɭɠɧɵɯ G = 0,25 ɦɦ.
69
7.5. ȼɵɱɢɫɥɟɧɢɟ ɫɢɥɵ ɢ ɦɨɦɟɧɬɚ ɪɟɡɚɧɢɹ
Ɂɧɚɱɟɧɢɟ ɬɚɧɝɟɧɰɢɚɥɶɧɨɣ ɫɨɫɬɚɜɥɹɸɳɟɣ ɫɢɥɵ ɪɟɡɚɧɢɹ Pz (ɤȽ) ɩɪɢ ɩɪɨɬɹɝɢɜɚɧɢɢ ɜɵɱɢɫɥɹɸɬ ɩɨ ɮɨɪɦɭɥɟ:
Pz 1,15 l C1 azx C2 K C3 X C4 J C5 D , |
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ɝɞɟ l – ɧɚɢɛɨɥɶɲɚɹ ɞɥɢɧɚ ɪɟɠɭɳɟɝɨ ɩɟɪɢɦɟɬɪɚ ɢɧɫɬɪɭɦɟɧɬɚ (ɬ. ɟ. ɧɚɢɛɨɥɶɲɚɹ ɫɭɦɦɚɪɧɚɹ ɞɥɢɧɚ ɮɚɤɬɢɱɟɫɤɢ ɪɟɠɭɳɢɯ ɤɪɨɦɨɤ ɧɚ ɜɫɟɯ ɨɞɧɨɜɪɟɦɟɧɧɨ ɪɚɛɨɬɚɸɳɢɯ ɡɭɛɶɹɯ ɩɪɨɬɹɠɤɢ), ɦɦ;
az – ɬɨɥɳɢɧɚ ɫɥɨɹ, ɫɪɟɡɚɟɦɨɝɨ ɨɞɧɢɦ ɡɭɛɨɦ ɩɪɨɬɹɠɤɢ, ɦɦ; K – ɤɨɥɢɱɟɫɬɜɨ ɫɬɪɭɠɤɨɞɟɥɢɬɟɥɶɧɵɯ ɤɚɧɚɜɨɤ;
X – ɫɤɨɪɨɫɬɶ ɪɟɡɚɧɢɹ, ɦ/ɦɢɧ;
J ɢ D – ɫɨɨɬɜɟɬɫɬɜɟɧɧɨ, ɩɟɪɟɞɧɢɣ ɢ ɡɚɞɧɢɣ ɭɝɥɵ ɡɭɛɶɟɜ ɩɪɨɬɹɠɤɢ, ɝɪɚɞ; ɋ1, ɋ2, ɋ3, ɋ4, ɋ5 ɢ x – ɤɨɷɮɮɢɰɢɟɧɬɵ ɢ ɩɨɤɚɡɚɬɟɥɶ ɫɬɟɩɟɧɢ;
1,15 – ɤɨɷɮɮɢɰɢɟɧɬ, ɭɱɢɬɵɜɚɸɳɢɣ ɢɡɧɨɫ ɩɪɨɬɹɠɤɢ (ɩɪɢɧɹɬɨ G = 0,4 ɦɦ).
Ɂɧɚɱɟɧɢɹɤɨɷɮɮɢɰɢɟɧɬɨɜɋ1–C5 ɢɩɨɤɚɡɚɬɟɥɹɫɬɟɩɟɧɢx ɞɚɧɵɜɬɚɛɥɢɰɟ7.2.
Ɍɚɛɥɢɰɚ 7.2 Ɂɧɚɱɟɧɢɹ ɤɨɷɮɮɢɰɢɟɧɬɨɜ ɢ ɩɨɤɚɡɚɬɟɥɹ ɫɬɟɩɟɧɢ ɜ ɮɨɪɦɭɥɟ (7.3)
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ɑɢɫɥɨɜɵɟ ɡɧɚɱɟɧɢɹ ɤɨɷɮɮɢɰɢɟɧɬɨɜ |
ɉɨɤɚɡɚɬɟɥɶ |
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ɫɬɟɩɟɧɢ x |
Ɉɛɪɚɛɚɬɵɜɚɟɦɵɣ ɦɟɬɚɥɥ |
ɋ1 |
ɋ2 |
ɋ3 |
ɋ4 |
ɋ5 |
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ɋɬɚɥɶ 30 |
115 |
0,060 |
0,57 |
0,20 |
0,12 |
0,85 |
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ɋɬɚɥɶ 35 |
160 |
0,080 |
0,57 |
0,24 |
0,13 |
0,85 |
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ɋɬɚɥɶ ɏɄɆ |
170 |
0,088 |
0,57 |
0,25 |
0,13 |
0,85 |
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ɋɬɚɥɶ ɈɄɆ |
190 |
0,106 |
0,57 |
0,28 |
0,14 |
0,85 |
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ɋɬɚɥɶ 45 |
220 |
0,108 |
0,57 |
0,32 |
0,14 |
0,85 |
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ɋɬɚɥɶ 40ɏ |
230 |
0,117 |
0,57 |
0,34 |
0,14 |
0,85 |
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ɋɬɚɥɶ Ɉɏɇ3Ɇ |
250 |
0,125 |
0,57 |
0,37 |
0,14 |
0,85 |
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ɋɬɚɥɶ 20ɏ |
265 |
0,137 |
0,57 |
0,40 |
0,15 |
0,85 |
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ɋɬɚɥɶ 12ɏɇ3 |
265 |
0,137 |
0,57 |
0,40 |
0,15 |
0,85 |
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ɋɬɚɥɶ 20ɏ ɭɥɭɱɲɟɧɧɚɹ |
300 |
0,158 |
0,57 |
0,46 |
0,16 |
0,85 |
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ɋɬɚɥɶ 40ɏ ɭɥɭɱɲɟɧɧɚɹ |
300 |
0,158 |
0,57 |
0,46 |
0,16 |
0,85 |
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ɑɭɝɭɧ ɫɪɟɞɧɟɣ ɬɜɟɪɞɨɫɬɢ |
140 |
0 |
0,57 |
0,25 |
0,13 |
0,85 |
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ɑɭɝɭɧ ɬɜɟɪɞɵɣ |
170 |
0 |
0,57 |
0,30 |
0,14 |
0,85 |
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70
