3,0
|
3,2
|
3,4
|
3,6
|
4,0
|
4,2
|
4,4
|
5,0
|
5,4
|
5,6
|
6,0
|
До25
|
10
|
12
|
14
|
16
|
20
|
22
|
24
|
30
|
34
|
36
|
40
|
0
|
20
|
22
|
24
|
26
|
30
|
32
|
34
|
40
|
44
|
46
|
50
|
5
|
26
|
28
|
30
|
33
|
37
|
39
|
42
|
47
|
52
|
54
|
57
|
10
|
32
|
34
|
37
|
40
|
45
|
47
|
49
|
55
|
59
|
61
|
65
|
50
|
41
|
44
|
53
|
56
|
57
|
60
|
62
|
68
|
72
|
73
|
78
|
100
|
50
|
54
|
58
|
62
|
70
|
72
|
74
|
80
|
84
|
86
|
90
|
250
|
61
|
64
|
68
|
71
|
78
|
81
|
83
|
90
|
94
|
96
|
100
|
300
|
72
|
75
|
78
|
80
|
86
|
89
|
91
|
100
|
104
|
106
|
110
|
400
|
80
|
84
|
88
|
92
|
100
|
102
|
105
|
112
|
118
|
122
|
128
|
500
|
90
|
94
|
98
|
102
|
110
|
113
|
116
|
125
|
132
|
134
|
140
|
600
|
100
|
104
|
108
|
112
|
120
|
123
|
126
|
135
|
142
|
144
|
150
|
700
|
110
|
114
|
117
|
120
|
128
|
131
|
134
|
143
|
149
|
153
|
159
|
800
|
120
|
123
|
127
|
130
|
136
|
139
|
142
|
152
|
158
|
162
|
168
|
900
|
124
|
128
|
132
|
136
|
143
|
146
|
150
|
159
|
165
|
169
|
175
|
1000
|
128
|
132
|
137
|
141
|
150
|
154
|
158
|
167
|
173
|
176
|
181
|
1100
|
134
|
138
|
143
|
148
|
155
|
159
|
163
|
173
|
180
|
184
|
190
|
1200
|
140
|
144
|
148
|
152
|
160
|
164
|
168
|
180
|
188
|
192
|
200
|
1300
|
142
|
147
|
151
|
156
|
165
|
170
|
174
|
186
|
194
|
198
|
207
|
1400
|
145
|
150
|
155
|
160
|
170
|
175
|
179
|
192
|
201
|
205
|
214
|
1500
|
150
|
155
|
160
|
165
|
175
|
180
|
185
|
199
|
208
|
212
|
222
|
– ortiqcha yuklama va ishonchlilik darajasini tavsiflovchi koeffitsient, "Kо‘rsatmalar ..." [1] ning 13-bandining 2-jadvaliga muvofiq ochuvchi kon lahimlari uchun = 1,05 olinadi;
Ortiqcha yuklama koeffitsient 2-jadval.
Kon lahimi konturida tog‘ jinsining siljishi U, mm
|
Ortiqcha yuklama koeffitsient
|
Asosiy-kapital kon lahimlari
|
Boshqa tayyorlov kon lahimlari
|
50 gacha
|
1,25
|
1,10
|
50 dan 200 gacha
|
1,10
|
1,05
|
200 dan 500 gacha
|
1,05
|
1,00
|
500 dan yuqori
|
1,00
|
1,00
|
=1,02 – kon lahimini о‘tishda burg‘ulash va portlatish usulining ta’sir koeffitsienti 1 olinadi.
kN/m
Mustahkamlagichlarni о‘rnatish zichligi "Kо‘rsatmalar ..." [1] ning 15-bandiga muvofiq belgilanadi:
bu yerda 200 kN - KMP-A3 (SVP-17 ZPK qulfi bilan) bitta mustahkamlagich romining qarshiligi.
Mustahkamlagichlarni o`rnatish qadamini aniqlaymiz.
Δx=1/n Δx=1/1,12=0,89
Biz rom/m, ya’ni 1,1 m о‘rnatish qadami bilan qabul qilamiz.
5. Rasm. Arkasimon metal mustaxkamlagichlarni joylashtirish sxemasi
MUSTAHKAMLAGICH TURINI TANLASH VA UNING YUK KO‘TARISH QOBILIYATINI ANIQLASH
Mustahkamlagich turi kon lahimi ko‘ndalang kesm yuzasi o‘lchamlariga, uning shiftidagi tog‘ jinslarning holatiga, hisoblangan yuklamaga P va kon lahimi konturida tog‘ jinslarining kutilayotgan siljishiga qarab tanlanadi. Ba'zi turdagi mustahkamlagichlarning parametrlari 3-jadvallarda keltirilgan. Mustahkamlagich turini tanlashda dastlab uning maqsadi va mumkin bo‘lgan qo‘llash ko‘lamini bilish kerak.
Shift tog’ jinslari turg’un bo’lganda tekis chiziqli to’sin(verxnyak) bilan, noturg’un bo’lganda – arkasimon to’sin bilan mustahkamlash afzalroqdir.
Ba'zi turdagi moslashuvchan metall mahkamlagichlarning parametrlari
3-jadval
Kon lahimi yorug’lik konturining siljishigacha bo’lgan yuza
|
Kon lahimi yorug’lik konturining kengligi, m.
|
Maxsus profilning turi
|
Mustahkamlagichning egilishidagi qarshiligi Ns, с moslashish kuchi, кН
|
Mustahkamlagichkonstruksiyasi ning vertikal moslashuvchanligi,
|
To’g’ri list va qavslar
|
ЗПК, ОЗШ, АП-3Ум
|
Uch bo’g’inli metall eguluvchan arkasimon mustahkamlagich (Арочная КМП(Крепь металлическая податливая)-А3)
|
10,0 gacha
|
3,2-3,4
|
SVP-17
|
150
|
200
|
300-360
|
10,0
|
3,5-3,8
|
SVP-19
|
160
|
230
|
300-360
|
10,0-13,0
|
4,0-4,8
|
SVP-22
|
190
|
260
|
300-400
|
10,0-18,0
|
4,0-5,5
|
SVP-27
|
210
|
290
|
300-400
|
13,0-20,0
|
5,2-6,0
|
SVP-33
|
–
|
320
|
400
|
To’rt bo’g’inli metall eguluvchan arkasimon mustahkamlagich (Арочная КМП(Крепь металлическая податливая)-А4)
|
10,0-13,0
|
4,0-4,8
|
SVP-22
|
–
|
260
|
400
|
14,0-18,0
|
5,2-5,5
|
SVP-27
|
–
|
290
|
400
|
18,0-20,0
|
5,5-6,0
|
SVP-33
|
–
|
320
|
400
|
Besh bo’g’inli metall eguluvchan arkasimon mustahkamlagich (Арочная КМП(Крепь металлическая податливая)-А5)
|
10,0 gacha
|
3,2-3,4
|
SVP-17
|
150
|
200
|
600-1000
|
10,0-11,4
|
3,5-3,8
|
SVP-19
|
160
|
230
|
600-1000
|
11,6-14,3
|
4,0-4,8
|
SVP-22
|
190
|
260
|
600-1000
|
14,3-19,0
|
4,2-5,5
|
SVP-27
|
210
|
290
|
600-1000
|
16,4-20,0
|
5,2-6,0
|
SVP-33
|
–
|
320
|
600-1000
|
Metall eguluvchan aylanasimon mustahkamlagich (КМП(Крепь металлическая податливая)-К4)
|
8,0 gacha
|
3,0 gacha
|
SVP-17
|
–
|
200
|
300
|
8,0-10,0
|
3,0-3,8
|
SVP-22
|
–
|
260
|
300
|
10,0-14,0
|
3,8-4,8
|
SVP-27
|
–
|
290
|
300
|
Trapetsiyasimon(to’g’riburchak)metall eguluvchan mustahkamlagich (Трапециевидная (прямоугольная) КМ П-Т(П))
|
8,0-13,1
|
3,8-5,0
|
SVP-22
|
–
|
260
|
700-1300
|
8,0-13,1
|
3,8-5,0
|
SVP-27
|
–
|
290
|
700-1300
|
Trapetsiyasimon(to’g’riburchak)metall eguluvchan mustahkamlagich (Трапециевидная (прямоугольная) КМ П-Т(П)) Kuchaytirilgan ustun bilan
|
8,0-13,1
|
3,8-5,0
|
SVP-22
|
–
|
500
|
700-1300
|
8,0-13,1
|
3,8-5,0
|
SVP-27
|
–
|
570
|
700-1300
|
Lahimning ko‘ndalang kesim yuzasi - 10,5 m2 gacha, to‘sinning uzunligi - 2 dan 3,4 m gacha. Yuqori sifatli to‘sin sifatida maxsus profil SVP-19 (22, 27) yoki 18 va 20-sonli profildan ishlatiladi. Mustahkamlagich o‘lchamlari 2.7-jadvalda keltirilgan.
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