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Vol 49 Iss. 1
Pages:
91-94
Download volume:
RUS
Article

Inclined boreholes as a means of leveling the base of the bench at granite quarries

Authors:
A. B. Fadeev
A. E. Sigachev
Date submitted:
1963-07-08
Date accepted:
1963-09-09
Date published:
1964-10-31

Abstract

At quarries in the Leningrad region, granite breaking is conducted, placing explosive charges in vertical wells with a diameter of 105 mm. Usually after explosions the floor of a bench turns out extremely uneven, protrusions (sills) sometimes reach one third of the height of the bench. Due to the uneven floor of the bench, the productivity of excavators EKG-4 does not exceed 250 thousand m³/year, i.e. about half as much as at leading mining enterprises

Область исследования:
Mining
Funding:

None

Go to volume 49

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