Analysis on Parameters of Loosen Blasting Crack Zone and Application
Abstract：From the role of stress waves and detonation gas angle, some parameters of fracture zone in the process of loosen blasting are analyzed systematically. Through in the beginning of rock＇s rupture period, shock waves and stress waves play an important role, the quasi-static stress field produced by explosion gas and the loosening fracture forming is inseparable. The loosen blasting tests of the bottom floor of fully-mechanized face in Liuzhuang coal mine have been proceeded, that defines the actual blasting parameters （borehole depth, borehole charge, ultimate burden, borehole density, charge construction and jam）. As a result, rock is loosen effectively, the rate of large rock is reduced significantly etc., and the research achievements can be references for the similar loosen blasting practice.
Keywords：loosen blastingcrack zoneparameters
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 26-28 )