WITHDRAWN: Theoretical analysis model and optimization scheme of shape-effect damage in cut blasting
huifeng qin,
Yan Zhao,
hailong wang
et al.
Abstract:To explore the rock-breaking mechanism of cut blasting under the influence of empty holes, based on the principles of the empty hole effect, stress concentration effect and expansion space theory, the stress distributions of empty hole walls are calculated, and a two-dimensional damage analysis model of shape-effect segmented blasting is established. On this basis, the theoretical analysis model of square hole cutting is given as an optimization scheme, and the model is demonstrated by numerical simulation. Th… Show more
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