Increase of efficiency of drilling machines utilization during drilling of small-diameter boreholes at mica mines
Authors:
Abstract
At the system of underground development of mica-bearing veins of small and medium thickness with open cleaning space, which is being implemented nowadays, it is necessary to drill vertical or slightly inclined boreholes with a diameter of 50-75 mm and a depth of 15-25 m.
Область исследования:
(Archived) Without section
Funding:
None
Similar articles
Definition of optimum degree of crushing granite massif by explosion on crushed stone quarries
1984 V. P. Makaryev, V. A. Mikhailov
Experiments on rock plate fracture by impact and explosion
1984 V. A. Bezmaternykh, A. S. Shchukin, S. M. Petukhov
Design schemes of working bodies of machines for non-explosive destruction of oversized rocks
1984 P. F. Korsakov, S. L. Ivanov