Abstract: For too high transport pressure could influence the security during upward sector medium-length hole blasting by adopt site mixed-loading emulsion explosive in underground mine,according to the characteristics of emulsion explosive,method of sensitizer solution coated outer of emulsion matrix to form a layer of lubricating film with low viscosity between emulsion explosive and loading hose was proposed to reduce transport pressure,then theoretical calculation was done on the resistance reduction capability,corresponding resistance reduction formula was obtained,and feasibility was simulated verified through Fluent.

Key words: Medium-length hole charging, Emulsion matrix, Transport, Resistance reduction