羽幌炭礦築別礦における炭車回転状況について (続き)

抄録

Mine tubs are not always moving in their working cycle. Sometimes they run quite rapid, and sometimes slowly, and very often stand still at the point they stopped.
The time consumptions of each mine tub at the reposing spots are not same. They take many various values. But if we observe them carefully, we can find regularities in their distributions.
This time, I investigated their distributions using Pearsor's statistical method. For application of the method by using the logarithmic classification of wasted times, I could get the conclusion that the distribution of spending times is Gauss' one. That is to say the formula of the distribution is shown by n=N/√2π1/σ∫x_ix_i-1e^- (x-x₀)/2σ²dx
Here, n=number of circulating waggons in the timeinterval between x_i-1 and x_i.
N=tolal number of tubs carried out from the pit month.
σ=a comstant.
x=lonat, α=apositive nurnber which is the base of lagarithm for t. t=wastlng time.
x₀=loααt₀, t₀=mean spending time at the point where each tub stands.
This conclusion is obtained from the data which collected at the Tikubetu Coal Mine, Haboro Colliery.So its apPlication to another mine is donbtful, owing to the wauting of other mine's data.