What is the relationship between explosive amount and powder factor in rock blasting.?
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The relationship between explosive amount and powder factor in rock blasting is that increasing the powder factor leads to an increase in the fragmentation mean size and an upward shift in the particle size distribution curve . The powder factor is used to calculate the quantity of explosive required per mass of rock fragmented . The small-scale blasting powder factor ranges between 0.6 and 1.0 kg/m3 . Higher powder factors, such as 0.7-0.9 kg/m3, result in a lower uniformity index, indicating a less uniform blast fragmentation . The proposed artificial neural network (ANN) models can be used to improve the blast powder factor for real-world applications . The dependence of fragmentation with the powder factor can be analyzed by the fragmentation-energy fan, and the frag-energy fan model is able to predict sizes with a high determination coefficient . Monitoring drill performance can yield a Rock Quality Index that can be correlated to a Powder Factor value, enabling the selection of an economical powder factor .
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| Papers (4) | Insight |
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01 Jun 2018 | The paper states that the specific explosive energy and the powder factor are almost the same in terms of their energy contribution to the fragmentation models. |
14 May 2022 | The paper discusses that monitoring drill performance can provide data to determine an economical powder factor, but it does not explicitly mention the relationship between explosive amount and powder factor in rock blasting. |
| The paper states that higher powder factors (greater than 0.7-0.8 kg/m3) result in a lower uniformity index, indicating that there is a relationship between explosive amount (powder factor) and blast fragmentation efficiency. | |
| The paper states that increasing the powder factor in blasting operations causes an increase in the fragmentation mean size and an upward shift in the particle size distribution curve. |
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