O’zbekiston respublikasi transport vazirligi

Qoplama yuzasini tozalashda kerak boʻladigan PUM lar sonini aniqlaymiz:
N=S/P_pum/sm=42000/13641,6 =3,08 4 smena
K_fik= 0,77/1=0,77 ish soati t= K_fik*8=8*0,77=6,16 soat
4.Qatlam ustiga bitum sepish (mashina markasini tanlaymiz). Avtogudronator 4995-1093 (ZIL)ni smenadagi ish unumdorligi quyidagi formula orqali topiladi:

5-rasm Avtogudronator 4995-1093 (ZIL)

=4.5/((2*45/60)+0.10+0.64)*0.75*0.70=2.36/2.24=1.05m³/soat
Bu yerda: –sisterna hajmi, q_s=4.5 m ³
– tashish masofasi, l=45 km
V – tezligi, V=60 km/soat
t_n – sisternani to‘ldirish vaqti,0.10 soat
- sisternadagi bitumni sepishga ketgan vaqt,0.25soat

=(4.5/(0.2*(3.6-0.10)*1000*10))=4.5/17500=0.64 s
r – sarf me’yori, l= 0.3 l/m²
b – ishlov berish tasmasi kengligi, b=3.6 m
a – qo‘shni tasmalarni qoplash eni, (a=0,10 m);
V_i – ishchi tezlik, V_i=10 km/s K_V=0,75; K_T=0,70
Avtogdronatorning bir ish smenasidagi ish unumdorligi
П^см_а/г= 8*1.05=8.4 m³
Yuzasiga bitum sepish uchun kerak avtogudronator soni:
N=V_bitum/ =12.6/8.4=1.53=2 smena
K_fik= 1.53/2=0.765 ish soati t= K_fik*8=8*0.765=6.12 soat
5.Qoplamani qurish:
Yetakchi mexanizm qilib asfaltbeton yotqizgichni tanlaymiz.
Asfaltbeton yotqizgichni BG-200 (Barber- Greene) markalisi tanlaymiz va uning ish unumdorligini quyidagi formula orqali topamiz.

6-rasm BG-200 (Barber- Greene)

= 500*3.45*0.05*1.25*1*2.4*0.75*0.75=145.54t/soat
Berilgan:
V_i= 500 m/soat; tezlik,
=2.4
b= 3.5m, qatlam eni;
a= 0.05m (choklar orasini yopish);
k_zu= 1.25 zichlashish koeffitsienti,
= 0.05m, qatlam qalinligi;
K_q.q=0.1, qatlam qalinligini hisobga oluvchi koeffitsienti,
=0.75;vaqtdan foydalanish koeffitsienti,
K_T=0.75;texnologik koeffitsienti,
Asfaltbeton yotqizgich bir smenadagi ish unumdorligi.
 8*145.54=1164.33 t/smena
Smenalar soni quyidagicha topiladi
=4.35=5smena
FIK ni aniqlaymiz
F=4.35/5=0.87 ish soati t= K_fik*8=8*0,87=6.96soat
Ish ko’lami