ISSN:
1570-1468
Source:
Springer Online Journal Archives 1860-2000
Topics:
Energy, Environment Protection, Nuclear Power Engineering
Notes:
Conclusions 1. The proposed complex index (reduced relative roughness), characterizing the maximum degree of smoothness of the surface of the working with appropriate energy expenditures on its formation, meets the requirements of the technological criterion of optimality of smooth-wall blasting parameters. 2. The optimal value of the burden-to-charge spacing ratio is determined only by the relationship between the diameters of the blasthole and of the charge located in it. The absolute values of the parameters of the arrangement of the blastholes should be determined on the basis of the established optimal burden-to-charge spacing ratio and value of the powder factor for breaking the near-contour rock layer. 3. The proposed method provides the possibility of a calculated estimate of the expected quality of contouring the working for given mining conditions.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01428211
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