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...
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). ...
However, the definition is vague in the selection of the maximum amount of initiating charge and the distance from the detonation source to the vibration measurement point for the linear regression analysis of the Sadovsky formula when the vibration measurement point is close to the blasting area, ...
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...
With the increase in the depth of large-scale open-pit mining, many mines have to face problems such as what is the effect of open-pit blasting on the rock slope and how to ensure the stability of a high-steep slope. The east slope of the Beizhan iron mine in Hejing County, Xinjian...
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...
In order to research the decay laws of pressure wave and positive pressure actuation duration with the increasing propagation distance under the repeated penetration and explosion of conventional weapons in rock,the tests with varying scale charge and scale distance of the firstdrilled explosionand the...
Blasting vibration monitoring data show that the main factors that impact on blasting vibration strength are the amount of explosives and the distance from the detonating point to the monitoring point. Therefore, Sadov’s formula is used to describe the vibration intensity: v = K Q 3 R α ....
and the three quantities can be interchanged and converted. The peak vibration velocity of particles has been widely used to evaluate the intensity of blasting vibration. Sadovski’s formula considers factors, such as the amount of explosive and distance from blasting center, which is close to th...
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