International Journal of Surface Mining Reclamation and EnvironmentRustan A (1992) Burden, spacing and bore hole diameter at rock blasting. Int J Surf Min Reclam 6:141–149Rustan PA. Burden, spacing and borehole diameter at rock blasting. In: Proceedings of the 3rd international symposium on ...
These characteristics have gotten a lot of attention, especially burden (B), stemming (ST), and spacing (S). Rock density (RD) has also been commonly utilized by researchers as input parameters (Nguyen et al. 2021; Tong and Ranganathan 2013; Pisner and Schnyer 2020; Zhou et al. 2020b...
The influence from specific charge, geometric scale and physical properties of homogenous rock on fragmentation A Rustan 被引量: 17发表: 1983年 Burden related to blasthole diameter in rock blasting Since the 1950s, most of the empirical formulas in rock blasting have incorporated a linear relation...
宽孔距爆破,blasting of large spacing and small burden wide-end blasting technology宽孔距爆破技术 3)pre-splitting blasting with wide pitch of holes宽孔距预裂爆破 1.At present, the pre-splitting blasting with wide pitch of holes already obtained the experiment in the domestic and foreign large-...
The modified drilling and blasting pattern included two rows of cut holes drilled at intermittent locations in a blasting round, i.e., two rows of cut holes were drilled after every 10-12 rows of production holes. The burden and spacing for cut holes were 0.4 and 0.5 m, respectively, and...
A field test of LDL stope cut blast- ing was conducted, with a stemming length of 2.2 m and a minimum burden of 2.2 m in the boreholes. The highly satisfactory field blasting effect indicates that the stemming length and minimum burden are reasonable. Highlights • Ten ...
After examining these factors, measurements of the burden, spacing, hole depth, charge per delay, sub-drilling, and PPV—the variables that have the most significant impact on back-break and fragmentation—were performed at the Anguran mine by monitoring the 162 different blasting rounds. Each ...
Rock Fracture and Blasting: Theory and Applications provides the latest on stress waves, shock waves, and rock fracture, all necessary components that must...
Meanwhile, the influence of burden and hole numbers on the ground vibration is controversial in the current literature, and the few studies on the stemming and spacing are not enough to prove the impact of these factors on the prediction of peak particle velocity. While several methods are used...
(refer Fig.2b,c). It is widely accepted that the blasting pattern design factors affect PPV. After examining these factors, measurements of the burden, spacing, hole depth, charge per delay, sub-drilling, and PPV—the variables that have the most significant impact on back-break and ...