Calculation of the minimum width of pillars during combine mining of potash seams

Pages:

47-49

Download volume:

RUS

Article

Authors:

N. M. Proskuryakov

A. K. Chernikov

Date submitted:

1979-08-23

Date accepted:

1979-10-22

Date published:

1980-02-01

Abstract

Let n interpass healds of width a be left in the chamber of width L to support the roof. Let's find the minimum value of a ...

Область исследования:

(Archived) Without section

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