Similar to burnt rock, which is rich in joints and fissures, the occurrence, shape, extension scale, density, spatial distribution geometric characteristics, cementation and filling of structural planes will have a direct impact on the blasting process and the final blasting effect. The influence of...
75 have employed hybrid SVR models to assess the fly-rock distance in surface mining. Support Vector Regression (SVR), or regression-based SVM in the literature, can be described as a linear SVR using the formula in Eq. (9). $$ f\left( x \right) = \sum\limits_{i}^{n} {\varphi...
Parameter empirical formula lists of domestic blasting experts on shallow blasting are concentrated on the ruler, the corresponding scale range is selected for the corresponding rock level, and a parameter is correspondingly selected in the corresponding scale range. The tunnel smooth surface and pre...
Q. Deformation forecasting and stability analysis of large-scale underground powerhouse caverns from microseismic monitoring. Int. J. Rock. Mech. Min. Sci. 86, 269–281 (2016). Article Google Scholar Yang, J. H., Lu, W. B., Zhao, Z. G., Yan, P. & Chen, M. Safety distance for...
A good number of empirical formulae and methods dealing with the analysis of the effects of blast-induced ground vibrations have been developed. The most common approach suggested for estimating the attenuation of particle velocity on the ground is to scale the distance (scaled distance, SD). ...
The equation of scaled distance extensively used in the literature was taken into consideration for the prediction of peak particle velocity. At the end of statistical evaluations an empirical relationship with good correlation was established between peak particle velocity and scale distance for this ...
On the western plateau of China, ventilation problems brought on by low atmospheric pressure must be overcome. And CO migration after blasting in high-altitude tunnel by inclined shaft has become a significant scientific issue. In this study, the Computa
developed based on 2 parameters; maximum charge per delay (kg) and distance from free face of blast (m). According to the most popular empirical PPV formula proposed by Duvall and Petkof10, prediction of PPV should be done through the use of scaled distance (SD) which is presented as ...
Hence, ux is free to relax quickly (to be precise, on a time scale 21a) to its local 'optimal' value, which is readily seen to be À .u2y 2v0 Once this relaxation has occurred, all of the non-linearities associated with a drop out of that compressible problem, leaving the l ...
1) A safety distance of ground shaking in mine blasting is determined. In this case, surrounding buildings need to be taken into consideration, and a suitable blasting distance is selected according to tremors that the buildings can withstand. It is found through scientific research that different...