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- W2392732181 abstract "By means of LS-DYNA3D program,the change rule of the blast cavity radius inside the weak intercalation in layered rock mass under deep-hole blasting is analyzed.The change of blast cavity radius is related with the thickness and the obliquity of weak intercalation,blasthole diameter,explosive charge,and the length-diameter ratio of explosive charge.Results indicate that the blast cavity is close to the shape of a column when the thickness of weak intercalation is greater than or equal to 5 cm.At the same thickness of weak intercalation,the radius of blast cavity increases with the increment of blasthole diameter and the explosive charge,and the increase shows a power function tendency.Under the condition of the same blasthole diameter and explosive charge,the radius of blast cavity increases linearly with the increment of the thickness of weak intercalation,and the amplitude decreases gradually.The relative radius of blast cavity increases with the increment of the length-diameter ratio of explosive charge.With the decrease of the angle(sharp one) between weak intercalation and the blasthole axes,the radius of blast cavity decreases,and the decrease is little by little.At the same time,the displacement perpendicular to the neutral layer of the weak intercalation increases up to 10 cm when the angle increases to 50°.Within the range of explosive charge length,the location of weak intercalation almost has no effect on the shape and the size of blast cavity,and the maximum relative change of the blast radius is only 1.2%." @default.
- W2392732181 created "2016-06-24" @default.
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- W2392732181 date "2008-01-01" @default.
- W2392732181 modified "2023-09-27" @default.
- W2392732181 title "Study on the Deformation Characters of Weak Intercalation in Layered Rock Mass under Deep-Hole Blasting" @default.
- W2392732181 hasPublicationYear "2008" @default.
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