Konni qazib olishga tayyorlash

F=12
N=102.gs
K=0.81
Y=2 t/m
D=200mm
H=10 m
n=3
n=250

𝜎_cж = 10 ∙ 𝑓

𝜎_cж = 10 ∙ 12 = 120𝑀𝑃𝑎
𝜎_cж = 𝜎_cж ∙ 0, 2 𝑀𝑃𝑎
𝜎_cдв = 120 · 0. 2 = 24 𝑀𝑃𝑎

Tog’ jinsining burg’ulash qiyinligini ko’rsatgichi:

П_б = 0. 07 · (𝜎_cж + 𝜎_cдв ) + · 0. 7
П_б = 0. 07 · (120 + 24) + 2 · 0. 7 = 11. 48
𝑃_о = к∙ П_б∙ d_д = 0, 8 ∙ 11. 48 ∙ 20 = 183 kN

Burg’ulashning texnik tezligi:

v_B = P_o * n_B ^0.8 / П_б ^1.6 * d_д = 183 * 102^0.8 / 11.48^1.6 * 20 = 7.45 m/s

Burg’ulash stanogining smenalik unumdorligi topiladi:
A_Б ^СМ = Т_см – (Т_пз + Тр) / v_Б ^-1 + Т_B = 8-0.58 / 0.13+0.03 = 45.5