Blasting System Research Articles

Computer aided blasting-round design in an arctic coal mine

Design of blasting-rounds in surface coal mines is dependent on physical properties and structural characteristics of the overburden material. In the absence of any theoretical formula to design blasting rounds, mines have adopted a “trial and error” approach to optimize their blasting system. Blasting data from approximately one hundred surface coal mines were utilized to develop a set of nomograms based on a set of eleven equations relating rock physical properties, blasting-round dimensions and explosive characteristics. An interactive computer program has been developed. Blasting efficiency in frozen rock is influenced by moisture content of the permafrost.

Shotblasting for corrosion‐free surface preparation: a review of new equipment and processes

New wet blasting system Perhaps abrasive blast cleaning's most significant development of recent years has been wet blasting. It was initially used as a method of suppressing dust, but is now recognised as an important factor in surface preparation.

4375740 Portable abrading cabinet device for recycling abrasive blasting system : Donald J Brown, assigned to JPD Manufacturing Limited

4375740 Portable abrading cabinet device for recycling abrasive blasting system : Donald J Brown, assigned to JPD Manufacturing Limited

Rapid excavation of rock with small charges of high explosive : Clark, G B; Ashcom, D W; Hanna, K US Bureau of Mines report OFR 111-80, Jan 1980, 250P

The purpose of this investigation was to determine the feasibility of designing and testing the elements of a small-charge blasting system that will eliminate, or reduce to acceptable levels, most of the undesirable features of current underground drill and blast systems, that is, (1) air blast, (2) ground vibrations, (3) flying fragments, (4) overbreak and fracture of surrounding rock, and (5) the cyclic nature of drill and blast operations. The experimentation was conducted in tunnels in granite, and the results indicated that the basic technical concepts of the project were achieved. The next step is to design, construct, and test a prototype machine.

Du pont sequential blasting system : Tansey, D O CIM Bull, V72, N807, July 1979, P80–85

Du pont sequential blasting system : Tansey, D O CIM Bull, V72, N807, July 1979, P80–85

Vacu‐Blast Order for Giant Shipblock Blasting Installation

The construction of ships in pre‐fabricated sections — or blocks as they are frequently termed — has made it necessary to develop new and faster techniques for treating the fabricated sections before they are painted. Vacu‐Blast Ltd., a member of the Allied Polymer Group, has been studying the problem for some time and the first major order for a completely new style blasting and grit recovery system, has just been won against strong international competition, from Wits Amsterdam B.V. This well‐known paint contracting company — a subsidiary of Wits United — is installing the Vacu‐Blast system in two specially designed blasting halls provided by the Netherland Dock and Shipbuilding Company of Amsterdam (NDSM) for whom Wits have acted as contract coating specialists for 65 years.