Effect of detonator position on rock fragmentation: Full-scale …
2021年11月1日 · Highlights. •. Detonator location was studied for open pit bench blasting. •. The best detonator position is the middle of the explosive charge length. •. The middle detonator position significantly improved rock fragmentation. •. Fragment size x50 was reduced by 11–24% in the field tests. Abstract.
Effect of the Location of the Detonation Initiation Point for Bench ...
This paper focuses on the influences of initiation position on bench blasting in order to improve blasting effects. The numerical simulations of bench blasting at different initiation points (top, middle, and bottom) are implemented based on secondary development of LS-DYNA with a tensile-compressive damage model.
When the explosive is detonated, the detonation wave spreads along the hole, and the stress wave induced by detonation also propagates to the other side of the hole in
Study on the effect of shape parameters and initiation points of ...
2024年9月18日 · In this paper, the side-length ratio of the rectangle, orientation, and detonation position of the charge are chosen as controlling parameters to investigate their influence on blast loads in the scaled distances of the gauges ranging from 0.63 to 10.54 m/kg1/3 with well validated 3D numerical simulations.
Effects of double-jet positions on detonation initiation ...
2020年2月1日 · In this paper, the effect of the two jet tubes distribution on the ignition and detonation initiation process was simulated numerically. During the simulation, the detonation waves generated in the jet tube detonated the mixed gas in the detonation chamber.
Experimental validation of rotating detonation for rocket …
2023年8月30日 · Specifically, rotating detonation rocket engines (RDREs) use detonation as the primary means of energy conversion, producing more useful available work compared to equivalent deflagration-based...
Analysis of the detonation initiation point position influence on …
This investigation considers a model problem for a steady, curved detonation propagating down a rate stick, examines the pseudo-reaction-zone structure of the programmed burn, studies the sensitivity of the state of the reaction products to the choice of the reacted zone length, and compares the results to those for the actual, physical ...
ANALYSIS OF THE DETONATION INITIATION POINT POSITION
2016年1月1日 · This paper addressed the ignition and detonation initiation investigation of two-phase valveless pulse detonation engines (PDEs) in different operational cases.
1. Introduction. d excavation method in mining, quarrying, and civil construction excavation. In bench blasting, if the complex blasting parameters are not matched with this blast, there will be...
Effect of the Location of the Detonation Initiation Point for Bench ...
2015年6月4日 · Effect of the Location of the Detonation Initiation Point for Bench Blasting. Uneven floor and fragmentation play an important role in blasting operations due to the direct effects on the efficiency of hauling and loading. This paper focuses on the influences of initiation position on bench blasting in order to improve blasting effects.