Full Wall Control Blasting Optimization
Wall control blasting is an important area in the mining industry that requires detailed evaluation of geological conditions in order to apply specific wall control blasting designs. An optimization case study with extreme rock hardness variance and an agressive 55° interramp angle is presented.
Ground Reaction Time Measurement and Modeling for Improved Blast Outcomes
Utilising the enhanced timing of electronic detonators along with high speed videography and pressure wave measurements it is possible to tailor blast timing to achieve optimised blast result to match the digging fleet capabilities. This paper details the journey from converting a coal mine from non-electric to electronic initiation systems.
Improved Techniques for Reactive Ground, Density and Performance Testing of Bulk Explosives
This paper presents techniques to measure reactive ground and product stability. In the case of product stability the measurement results are analysed in conjunction with detonation performance.
Improvement of Safety Practices for Loading of ANFO-Based Explosives in Zones with Reactive Rocks in Chile
Reactive grounds (presence of FeS2, CuFeS2) can create hazards in a mine. Here, the pertinence in the use of special products for these grounds according to the geological information, chemical analysis and normative models of mineralogy has been studied. A geological section containing the hazard areas was adapted for evaluation.
Influence of Rock Mass Properties on Blast-induced Rock Movement
Blast design is normally geared to optimizing fragment size distribution and minimizing deleterious blast effects. This paper details a case study linking blast-induced rock mass movement with spatial variation of rock mass properties in a metaliferrous open pit mine with heterogeneous orebodies, requiring a different approach to blast design.
Interior Explosive Model Development and Validation for Application in Terrorism Risk Assessment
In support of a quantitative risk assessment of explosive terrorism risks to the US homeland, a probabilistic model of the human health consequences of an explosive attack inside a building was developed and validated against both past incidents and high fidelity modeling.
ISEE Blasting Seismograph Standards 2017
The ISEE Standards committee has recently updated both the Field Practice Guidelines for Blasting Seismographs and the Performance Specifications for Blasting Seismographs. Each standard will be discussed along with the significant revisions from the latest revision cycle.