Title

Drilling and Blasting in Thin Tabular Stopes At Depth in Hard Rock

Abstract

The effects of the more important variables on the control of stoping width in tabular stopes in deep-level, hard-rock mines are discussed. Methods of achieving better utilization of rock drills in stoping operations are illustrated and the importance of stope-drilling accuracy in the horizontal and vertical plane, blasthole burdens, blasting agents, coupling of charges and sequential firing are described, together with their effect on the physical conditions of the stope hanging-wall and footwall, blasting efficiency and rock fragmentation. Many of these variable parameters can now be controlled by use of a stope-drilling rig designed and developed for this purpose. Non-controllable factors, such as geological discontinuities, faults, beplanes and weak strata in the vicinity of stopes, and their influence on drilling and blasting operations, are also discussed.

Department(s)

Mining and Nuclear Engineering

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1973 Maney Publishing, All rights reserved.

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