Application of deep hole blasting in open-pit coal mine with hole-by-hole blasting technique

For researching the application of deep-hole blasting in open-pit coal mine with hole-by-hole blasting technique. This paper took Shengli open-pit coal mine of Shenhua Beidian as the research object, and conducted a further theoretical analysis, designed the reasonable blasting scheme, and obtained the specific blasting parameters, such as minimal resistance line, stemming length and so on. Numerical simulation was applied to analyze hole-by-hole blasting mechanism by using Ansys; Numerical modeling the blasting scheme of Shengli open-pit coal mine was carried out to insure its rationality; the change of rocks stress while blasting under different stemming lengths was analyzed to get the most efficient length value.