Mavzu: Kam quvvatli tik yotgan ruda konlari uchun shpurli maydalash ko‘rsatkichlarini hisoblash Darsning maqsadi

Amaliy ish № 5.

Mavzu: Ko‘tarish uskunasini hisoblash va tanlash.

Darsning maqsadi: talabalarga stvollarda ishlatiladigan ko‘tarish mashinasining asosiy parametrlarini hisoblash va tanlashni o‘rgatish.

Zamonaviy konchilik korxonalarida quyidagi prinsipial sxemalarga asoslangan ko‘tarish uskunalaridan foydalaniladi:

- bir va ikki o‘rovchi barabanli, ikkita ko‘taruvchi idishli yoki bitta ko‘taruvchi idish va ko‘tarilayotgan yukning og‘irligining bir qismi yoki idishning massasiga teng bo‘lgan posangi (protivoves) (5.1 a-rasm). Ko‘tarish uskunalarida kanat orqali ko‘tarilayotgan yuk massasini barqarorlashtirish uchun kanat ikkala tomonidan idish tubiga yoki posangiga mahkamlanadi (5.1.b rasm);

- o‘raluvchi kanatli (ko‘p kanatli) sirpanuvchi shkivli ko‘taruvchi uskuna (5.1.v rasm);

- Boyler sistemasida ishlovchi va ikkita o‘raluvchi shkivlarga osilgan ikkita ko‘taruvchi idishga kanatlar orqali mahkamlangan ikkita o‘rovchi organ (har biri ikkita barabandan iborat) ko‘tarish uskunasi (5.1. g - rasm).



5.1 – rasm. Ko‘tarish uskunalarining prinsipial sxemalari: 1, 5 – ko‘taruvchi idishlar; 2 – kanatni boshqaruvchi organ; 3 – yo‘naltiruvchi shkivlar; 4 – bosh kanatlar; 6 – vazminlashtiruvchi kanat (uravnoveshivayuщiy kanat); 7 – buraluvchi shkiv (otklonyayuщiy shkiv).

Ko‘taruvi uskunalarni tanlash uchun asos qilib olinadigan ko‘rsatkich bu shaxta yoki rudnikning yillik ish unumdorligi Q_g (t) va uning chuqiurligi N_sh (m) hisoblanadi.

Ko‘tarish uskunasining kerak bo‘ladigan soatlik ish unumdorligi(t/soat):

, (5.1)

bunda k_nr – ko‘tarish uskunasiga yukni etkazib berish me’yorida bo‘lmaslik koeffitsienti (kon massasini skipli ko‘tarishda k_r = 1,5);

p – bir yildagi ish kunlari soni;

t_sut – bir sutkada ko‘tarish uskunasining ishlash vaqti;



p_s – bir sutkadagi smenalar soni;

_Tsm – smena davomiyligi, soat.

Klatli ko‘tarish usunalarida odamlarni ko‘tarib – tushirish 35 – 40 min oralig‘ida bajarilishi shart. Bunda klet polining 1 m² maydoniga 5 kishidan ortiq bo‘lmagan odamlar soni qabul qilinadi. Bundan bitta klet yordamida maksimal nechta odam ko‘tarish mumkinligini aniqlash mumkin,

, (5.2),

gde – bir qavatdagi klet polining yuzasi, m²;

p_e – kletdagi qavatlar soni.

Skipli ko‘tarish uskunasining haqiqiy ish unumdorligi quyidagi formula orqali aniqlanishi mumkin, t/soat:

, (5.3),

gde T_s – ko‘tarish jarayonida bitta sikl davomiyligi, s;

t_g – skipning yuk ko‘tarish qobiliyati, t.

Idishlarning yuk ko‘tarish qobiliyati t_g shaxtaning belgilangan ish unumdorligiga bog‘liq bo‘ladi:

(5.4)

Ikkita idishli ko‘tarish uskunasi uchun

, (5.5),

Bitta idish va posangili ko‘tarish uskunasi uchun

, (5.6),

bunda t_d – idishning harakatlanish vaqti, s;

- ko‘tarishlar orasidagi pauza davomiyligi, s.

Ko‘taruvchi idishning harakatlanish davomiyligi t_d vertikal yoki qiya kon lahimida harakatlanishda o‘rtacha tezligi _sr ga bog‘liq:

i (5.7)

bunda m/s deb kabul kilamiz;

L – qiya kon lahimida idishning ko‘tarishdagi harakatlanish yo‘li uzunligi, m.

O‘rtacha tezlik _sr idishning belgilangan rejimda harakatlanishining maksimal tezligi _max ga bog‘liq:

bunda  - tezlikning ko‘paytiruvchi ko‘rsatkichi. Ag‘darmaydigan kletli ko‘tarish uskunalari uchun  = 1,15  1,2; ag‘daruvchi skiplar uchun  = 1,2  1,25; ag‘daruvchi idishli ko‘tarish uskunalari uchun  = 1,25  1,35.

Xavfsizlik qoidalariga asosan ko‘mir va slanets shaxtalarida odamlarni vertikal stvollardan tushirish va chiqarishda maksimal ruxsat etilgan tezlik 12 m/s, qiya stvollarda esa 5m/s, qiya stvollardan skiplar yordamida yuklarni ko‘tarishda 7 m/s va kletda 5 m/s; vertikal stvollarda yuk ko‘tarishda maksimal tezlik chegaralanmagan, lekin odatda 18 m/s dan oshmaydi.

Ko‘tarish kanatlari po‘lat sim arqonlardan tayyorlanadi, ularning diametri 0,0014÷0,003m va uzilishga bo‘lgan mustahkamlik darajasi _r = (1,4  2,1)  10⁹ Pa teng bo‘ladi.

№5 amaliy ishni bajarish uchun variantlar:

№	Qg t	Nsh m	p kun	ps smena	tsm soat	m^2	pe qavat	tg t
1	300000	120	350	3	7.2	1.4	1	10
2	350000	130	345	3	7.1	1.6	1	12
3	400000	140	340	3	7	1.8	1	14
4	450000	150	335	3	6.9	2	1	15
5	500000	160	330	3	6.8	2.2	1	17
6	550000	170	325	3	6.7	2.4	1	19
7	600000	180	320	3	6.6	2.6	1	20
8	650000	190	315	3	6.5	2.8	1	22
9	700000	200	310	3	6.4	3	1	24
10	750000	210	305	3	6.3	3.2	1	25
11	800000	220	300	3	6.2	3.4	1	27
12	850000	230	295	2	7.5	3.6	2	29
13	900000	240	290	2	7.4	3.8	2	30
14	950000	250	285	2	7.3	4	2	32
15	1000000	260	280	2	7.2	4.2	2	34
16	1050000	270	275	2	7.1	4.4	2	35
17	1100000	280	270	2	7	4.6	2	37
18	1150000	290	265	2	7.5	4.8	2	39
19	1200000	300	260	2	7.4	5	2	40
20	1250000	310	255	2	7.3	5.2	2	42
21	1300000	320	250	2	7.2	5.4	2	44
22	1350000	330	245	2	7.1	5.6	2	45
23	1400000	340	240	2	7	5.8	2	47
24	1450000	350	235	2	7.5	6	2	49
25	1500000	360	230	2	7.4	6.2	2	50

Amaliy mashg‘ulot №6

Mavzu: SHaxtada suvni chiqarib tashlashni hisoblash
Darsning maqsadi: talabalarga er osti sharoitida suvni chiqarib tashlashni asosiy parametrlarini tanlash va mos keladigan trubalar diametrini aniqlashni urgatish.
Nasos SNSG 38-220-UXL4 TU 3631-003-00217389-96, bunda: SNSG – S – markazdan qochma, N – nasos, S – seksiyali, G – issiq suvga mo‘ljallangan salnikli maxkamlangan (nasos sentrobejnыy mnogostupenchatыy seksionnыy dlya goryachey vodы s salnikovыm uplotneniem) turda ekanligini bildiradi; 38 - unumdorlik, m³/soat; 220 – ko‘tarish balandligi, m;

Nasos SNSMt 60-99-UXL4 TU 3631-003-00217389-96, bunda: SNSMt - S – markazdan qochma, N – nasos, S – seksiyali, Mt – ko‘p seksiyali moy tashishga hamda torsevoy mahkamlangan; 60 - unumdorlik, m³/soat; 99 - ko‘tarish balandligi, m;

Nasos SNSnt 180-128-UXL5 TU 3631-005-00217389-96, bunda: SNSnt - - S – markazdan qochma, N – nasos, S – seksiyali, Mt – ko‘p seksiyali neft tashishga hamda torsevoy mahkamlangan;180 - unumdorligi, m³/soat; 128 - ko‘tarish balandligi, m;

SNSGA 300-180-UXL4 TU 3631-003-00217389-96 agregati, bunda: elektronasos agregati bo‘lib S – markazdan qochma, N – nasos, S – seksiyali, G – issiq suvga mo‘ljallangan salnikli maxkamlangan turda ekanligini bildiradi; 300 - unumdorligi, m³/soat; 180 - ko‘tarish balandligi, m;

Amaliy mashg‘ulotni bajarish uchun ma’lumotlar:

1. 
   Asosiy suv omboriga normativ suv yig‘iliish ko‘rsatkichi Q_pr.nor.=280m³/soat;
   
2. 
   Bahor –kuz oylarida asosiy suv omboriga maksimal suv yig‘iliish ko‘rsatkichi Q_pr.maks.=400m³/soat;
   
3. 
   SHaxtada asosiy suvni chiqarib tashlash nasoslari kamerasi joylashgan chuqurlik N_sh=360m.
   

Er osti suvlari sulfat – natriyli mineralizatsiyaga ega, bunda mineralizatsiya miqdori 6 g/l va undan yuqori bo‘lishi mumkin.

Nasos qurilmasining asosiy parametrlarini aniqlaymiz:

1. 
   Qurilmaning minimal ish unumdorligi sutka davomidagi normal suv yig‘ilish ko‘rsatkichidan kelib chiqib aniqlanadi. Bunda foydali qazilmalarni er osti usulida qazib olishda yagona xavfsizlik qoidalariga asosan nasos bir sutka davomida ko‘pi bilan 20 soat ishlashi kerak
   

.

2. 
   Qurilmaning bahor – kuz mavsumida sutka davomidagi maksimal suv yig‘ilish ko‘rsatkichidansuvni chiqarib tashlash qurilmasining unumdorligi:
   

3. 
   Taxminiy suvni ko‘tarish balandligi quyidagicha aniqlanadi:
   

,

bunda η_tr – quvurlarning FIK (0,9 ÷ 0,96).

Nasos qurilmasining markasini aniqlaymiz:

4. 
   SNS 500-600 markadagi markazdan qochma nasosini tanlaymiz.
   

Texnicheskie xarakteristiki sentrobejnogo seksionnogo nasosa SNS 500-600.

Bitta ishchi g‘ildirakka to‘g‘ri keladigan ko‘tarish balandligi, m	Nulevoy ko‘tarishda bitta ishchi g‘ildirakka to‘g‘ri keladigan ko‘tarish balandligi, m	Elektrodvigatel quvvati, kVt	Unumdorligi, m³/soat	NominalFIK
81,25	92	1500	500	0,73

5. 
   Ishchi g‘ildiraklar soni:
   

ta.

6. 
   Nasosning nulevoy ko‘tarishda ko‘tarish balandligi:
   

.

7. 
   Normativ suv oqimini chiqarib tashlash uchun zarur bo‘lgan ishchi nasoslar soni:
   

ta.

Normativ suv oqimini chiqarib tashlash uchun zarur bo‘lgan ishchi nasoslar sonini 1 ta deb qabul qilamiz.

8. 
   Maksimal suv oqimini chiqarib tashlash uchun zarur bo‘lgan ishchi nasoslar soni:
   

ta.

Maksimal suv oqimini chiqarib tashlash uchun zarur bo‘lgan ishchi nasoslar sonini ham 1 ta deb qabul qilamiz.

Suvni chiqarib tashlash qurilmalarini loyihalashda suv yig‘ilishi soatiga 50m³/soatdan yuqori bo‘ladigan bo‘lsa nasoslar kamerasida kamida 3 ta nasos o‘rnatilishi shart, bunda 1 – ishchi, 2 – rezerv va 3 - remontda. CHiqarib tashlashda ko‘tarish balandligining geodezik o‘lchami:

,

bunda h_sl=5 – quvurning stvolda er yuziga chiqib suvni yig‘ish va qayta ishlash joyiga tashlash balandligi, m;

h_vs=4,5 – nasosning ruxsat etilgan so‘rish chuqurligi, m.

Nasos turini tanlash jadvali

Nasos turi	Ko‘tarish balandligi, m
SNS – 13 –	44	70	88	110	132	154	176	198	220	250	300	350	400	450	500	600
SNS – 25 –
SNS – 38 –
SNS – 60 –
SNS – 110 –
SNS – 150 –
SNS – 200 –
SNS – 250 –
SNS – 300 –
SNS – 350 –
SNS – 400 –
SNS – 450 –
SNS – 500 –

№6 amaliy ish uchun variantlar:

Variant №	Qpr.nor. m³/soat	Qpr.maks. m³/soat	Nsh m	ηtr
1	10	20	60	0.9
2	20	30	75	0.91
3	40	50	90	0.92
4	80	100	105	0.93
5	160	200	120	0.94
6	320	400	135	0.95
7	15	20	150	0.96
8	30	40	165	0.9
9	60	80	180	0.91
10	120	150	195	0.92
11	240	300	210	0.93
12	13	20	225	0.94
13	26	40	240	0.95
14	52	70	255	0.96
15	104	130	270	0.9
16	208	260	285	0.91
17	416	520	300	0.92
18	17.5	30	315	0.93
19	35	50	330	0.94
20	70	90	345	0.95
21	140	180	360	0.96
22	280	350	375	0.9
23	35	50	390	0.91
24	70	90	405	0.92
25	140	180	420	0.93

Amaliy mashg‘ulot №7

Tema: Siqilgan havo sarfini hisoblash.

Darsning maqsadi: talabalarga shaxtani siqilgan xavo bilan ta’minlashni asosiy parametrlarini tanlash va mos keladigan siqilgan xavo trubalar diametrini aniqlashni urgatish.
Siqilgan havo sarfi quyidagicha aniqlanadi:
m³/min;
Bunda  = 1,3 – havoning quvurlar birlashib turga joyidan chiqarishini hisobga oluvchi koeffitsient;

 = 1,4 – uskunalarning eylanganligini hisobga oluvchi koeffitsient;

 = 0,9 – uskunalarning bir vaqtda ishlashini hisobga oluvchi koeffitsient;

q₁ = 0,3 - PP-63V uchun havo sarfi, m³/min,;

q₂ = q₅ = 10 m³/min. - PSK-1, NKR-100M lar uchun havo sarfi;

q₃ = 20 m³/min. - PPN-3 uchun havo sarfi;

q₄ = 8 m³/min. - BM-60 (SB-67) beton sepish mashinalari uchun havo sarfi;

n₁ = 6 - bir vaqtda ishlaydigan PP-63V markadagi uskunalarning soni;

n₂ = 3 - bir vaqtda ishlaydigan PSK-1 markadagi uskunalarning soni;

n₃ = 3 - bir vaqtda ishlaydigan PPN-3 markadagi uskunalarning soni;

n₄ = 1 - bir vaqtda ishlaydigan BM-60 (SB-67) markadagi uskunalarning soni;

n₅ = 1 - bir vaqtda ishlaydigan NKR-100M markadagi uskunalarning soni;

Asosiy quvurning ichki diametri yuqoridagi sharoit uchun quyidagi formula orqali aniqlanadi:

,

bunda υ_n=2,5-18,0 – siqilgan havoning quvur bo‘ylab harakatlanish tezligi, m/s.

Mavjud bo‘lgan normalarga asosan (GOST-8732-78) asosiy quvurning ichki diametrini 150 mm, hamda devor qalinligini 5 mm deb qabul qilamiz.

Jadval 9.1

№№	ω, kg/sm^2	Skorost
		0.1	0.2	0.3	0.4	0.5	0.6		0.7	0.8	0.9	1	1.2	1.4	1.6	1.8	2	2.5		3	3.5	4	5		6	7	8	9	10	12	14	16	18
1000	Du,mm	Jidkost samotek						Jidkost v truboprovodax											Gazы pri estestvennoy tyage					Gazы pri atmosfernom ili blizkom k nemu davlenii v ventilyasionnыx gazovodax i truboprovodax
1	10	0.03	0.06	0.08	0.11	0.14	0.17		0.20	0.23	0.25	0.28	0.34	0.40	0.45	0.51	0.57	0.71		0.85	0.99	1.13	1.41		1.70	1.98	2.26	2.54	2.83	3.39	3.96	4.52	5.09
2	15	0.06	0.13	0.19	0.25	0.32	0.38		0.45	0.51	0.57	0.64	0.76	0.89	1.02	1.14	1.27	1.59		1.91	2.23	2.54	3.18		3.82	4.45	5.09	5.72	6.36	7.63	8.90	10.17	11.45
3	20	0.11	0.23	0.34	0.45	0.57	0.68		0.79	0.90	1.02	1.13	1.36	1.58	1.81	2.03	2.26	2.83		3.39	3.96	4.52	5.65		6.78	7.91	9.04	10.17	11.30	13.56	15.83	18.09	20.35
4	25	0.18	0.35	0.53	0.71	0.88	1.06		1.24	1.41	1.59	1.77	2.12	2.47	2.83	3.18	3.53	4.42		5.30	6.18	7.07	8.83		10.60	12.36	14.13	15.90	17.66	21.20	24.73	28.26	31.79
5	32	0.29	0.58	0.87	1.16	1.45	1.74		2.03	2.32	2.60	2.89	3.47	4.05	4.63	5.21	5.79	7.23		8.68	10.13	11.58	14.47		17.36	20.26	23.15	26.04	28.94	34.73	40.51	46.30	52.09
6	40	0.45	0.90	1.36	1.81	2.26	2.71		3.17	3.62	4.07	4.52	5.43	6.33	7.23	8.14	9.04	11.30		13.56	15.83	18.09	22.61		27.13	31.65	36.17	40.69	45.22	54.26	63.30	72.35	81.39
7	50	0.71	1.41	2.12	2.83	3.53	4.24		4.95	5.65	6.36	7.07	8.48	9.89	11.30	12.72	14.13	17.66		21.20	24.73	28.26	35.33		42.39	49.46	56.52	63.59	70.65	84.78	98.91	113.04	127.17
8	60	1.02	2.03	3.05	4.07	5.09	6.10		7.12	8.14	9.16	10.17	12.21	14.24	16.28	18.31	20.35	25.43		30.52	35.61	40.69	50.87		61.04	71.22	81.39	91.56	101.74	122.08	142.43	162.78	183.12
9	70	1.38	2.77	4.15	5.54	6.92	8.31		9.69	11.08	12.46	13.85	16.62	19.39	22.16	24.93	27.69	34.62		41.54	48.47	55.39	69.24		83.08	96.93	110.78	124.63	138.47	166.17	193.86	221.56	249.25
10	80	1.81	3.62	5.43	7.23	9.04	10.85		12.66	14.47	16.28	18.09	21.70	25.32	28.94	32.56	36.17	45.22		54.26	63.30	72.35	90.43		108.52	126.60	144.69	162.78	180.86	217.04	253.21	289.38	325.56
11	90	2.29	4.58	6.87	9.16	11.45	13.73		16.02	18.31	20.60	22.89	27.47	32.05	36.62	41.20	45.78	57.23		68.67	80.12	91.56	114.45		137.34	160.23	183.12	206.02	228.91	274.69	320.47	366.25	412.03
12	100	2.83	5.65	8.48	11.30	14.13	16.96		19.78	22.61	25.43	28.26	33.91	39.56	45.22	50.87	56.52	70.65		84.78	98.91	113.04	141.30		169.56	197.82	226.08	254.34	282.60	339.12	395.64	452.16	508.68
13	125	4.42	8.83	13.25	17.66	22.08	26.49		30.91	35.33	39.74	44.16	52.99	61.82	70.65	79.48	88.31	110.39		132.47	154.55	176.63	220.78		264.94	309.09	353.25	397.41	441.56	529.88	618.19	706.50	794.81
14	150	6.36	12.72	19.08	25.43	31.79	38.15		44.51	50.87	57.23	63.59	76.30	89.02	101.74	114.45	127.17	158.96		190.76	222.55	254.34	317.93		381.51	445.10	508.68	572.27	635.85	763.02	890.19	1017.36	1144.53
15	175	8.65	17.31	25.96	34.62	43.27	51.93		60.58	69.24	77.89	86.55	103.86	121.16	138.47	155.78	173.09	216.37		259.64	302.91	346.19	432.73		519.28	605.82	692.37	778.92	865.46	1038.56	1211.65	1384.74	1557.83
16	200	11.30	22.61	33.91	45.22	56.52	67.82		79.13	90.43	101.74	113.04	135.65	158.26	180.86	203.47	226.08	282.60		339.12	395.64	452.16	565.20		678.24	791.28	904.32	1017.36	1130.40	1356.48	1582.56	1808.64	2034.72
17	225	14.31	28.61	42.92	57.23	71.53	85.84		100.15	114.45	128.76	143.07	171.68	200.29	228.91	257.52	286.13	357.67		429.20	500.73	572.27	715.33		858.40	1001.46	1144.53	1287.60	1430.66	1716.80	2002.93	2289.06	2575.19
18	250	17.66	35.33	52.99	70.65	88.31	105.98		123.64	141.30	158.96	176.63	211.95	247.28	282.60	317.93	353.25	441.56		529.88	618.19	706.50	883.13		1059.75	1236.38	1413.00	1589.63	1766.25	2119.50	2472.75	2826.00	3179.25
19	275	21.37	42.74	64.11	85.49	106.86	128.23		149.60	170.97	192.34	213.72	256.46	299.20	341.95	384.69	427.43	534.29		641.15	748.01	854.87	1068.58		1282.30	1496.01	1709.73	1923.45	2137.16	2564.60	2992.03	3419.46	3846.89
20	300	25.43	50.87	76.30	101.74	127.17	152.60		178.04	203.47	228.91	254.34	305.21	356.08	406.94	457.81	508.68	635.85		763.02	890.19	1017.36	1271.70		1526.04	1780.38	2034.72	2289.06	2543.40	3052.08	3560.76	4069.44	4578.12
21	325	29.85	59.70	89.55	119.40	149.25	179.10		208.95	238.80	268.65	298.50	358.20	417.89	477.59	537.29	596.99	746.24		895.49	1044.74	1193.99	1492.48		1790.98	2089.47	2387.97	2686.47	2984.96	3581.96	4178.95	4775.94	5372.93
22	350	34.62	69.24	103.86	138.47	173.09	207.71		242.33	276.95	311.57	346.19	415.42	484.66	553.90	623.13	692.37	865.46		1038.56	1211.65	1384.74	1730.93		2077.11	2423.30	2769.48	3115.67	3461.85	4154.22	4846.59	5538.96	6231.33
23	375	39.74	79.48	119.22	158.96	198.70	238.44		278.18	317.93	357.67	397.41	476.89	556.37	635.85	715.33	794.81	993.52		1192.22	1390.92	1589.63	1987.03		2384.44	2781.84	3179.25	3576.66	3974.06	4768.88	5563.69	6358.50	7153.31
24	400	45.22	90.43	135.65	180.86	226.08	271.30		316.51	361.73	406.94	452.16	542.59	633.02	723.46	813.89	904.32	1130.40		1356.48	1582.56	1808.64	2260.80		2712.96	3165.12	3617.28	4069.44	4521.60	5425.92	6330.24	7234.56	8138.88
25	425	51.04	102.09	153.13	204.18	255.22	306.27		357.31	408.36	459.40	510.45	612.54	714.62	816.71	918.80	1020.89	1276.12		1531.34	1786.56	2041.79	2552.23		3062.68	3573.12	4083.57	4594.02	5104.46	6125.36	7146.25	8167.14	9188.03
26	450	57.23	114.45	171.68	228.91	286.13	343.36		400.59	457.81	515.04	572.27	686.72	801.17	915.62	1030.08	1144.53	1430.66		1716.80	2002.93	2289.06	2861.33		3433.59	4005.86	4578.12	5150.39	5722.65	6867.18	8011.71	9156.24	10300.77
27	475	63.76	127.52	191.28	255.05	318.81	382.57		446.33	510.09	573.85	637.62	765.14	892.66	1020.19	1147.71	1275.23	1594.04		1912.85	2231.66	2550.47	3188.08		3825.70	4463.31	5100.93	5738.55	6376.16	7651.40	8926.63	10201.86	11477.09
28	500	70.65	141.30	211.95	282.60	353.25	423.90		494.55	565.20	635.85	706.50	847.80	989.10	1130.40	1271.70	1413.00	1766.25		2119.50	2472.75	2826.00	3532.50		4239.00	4945.50	5652.00	6358.50	7065.00	8478.00	9891.00	11304.00	12717.00
29	550	85.49	170.97	256.46	341.95	427.43	512.92		598.41	683.89	769.38	854.87	1025.84	1196.81	1367.78	1538.76	1709.73	2137.16		2564.60	2992.03	3419.46	4274.33		5129.19	5984.06	6838.92	7693.79	8548.65	10258.38	11968.11	13677.84	15387.57

.
Siqilgan havo uchun quvur diametrini tanlash jadvali
№7 amaliy ish uchun variantlar:

№, p.p.	 1.1-1.4	 1.15-1.5	 0.7-1	n1 sht.	n2 sht.	n3 sht.	n4 sht.	n5 sht.
1	1.1	1.15	0.7	5	6	7	8	9
2	1.12	1.2	0.72	6	7	5	7	8
3	1.14	1.25	0.74	7	8	3	6	7
4	1.16	1.3	0.76	8	9	1	5	6
5	1.18	1.35	0.78	9	10	2	4	5
6	1.2	1.4	0.8	10	11	3	3	4
7	1.22	1.45	0.82	11	12	4	2	3
8	1.24	1.5	0.84	10	8	8	6	8
9	1.26	1.15	0.86	9	7	7	7	7
10	1.28	1.16	0.88	8	6	6	8	6
11	1.3	1.17	0.9	7	5	5	9	5
12	1.32	1.18	0.92	6	4	4	10	4
13	1.34	1.19	0.94	5	3	3	11	3
14	1.36	1.2	0.96	4	2	2	12	2
15	1.38	1.21	0.98	3	1	1	13	1
16	1.4	1.22	1	2	8	8	14	6
17	1.1	1.23	0.7	9	10	2	4	5
18	1.15	1.24	0.72	10	11	3	3	4
19	1.2	1.25	0.74	11	12	4	2	3
20	1.25	1.26	0.76	10	8	8	6	8
21	1.3	1.27	0.78	9	7	7	7	7
22	1.35	1.28	0.8	9	10	2	4	5
23	1.4	1.29	0.82	10	11	3	3	4
24	1.2	1.3	0.84	11	12	4	2	3
25	1.3	1.31	0.86	10	8	8	6	8