Abstract
A blasting system consisting of a combination of non-electric detonators and ANFO explosives has been in use recently for tunnel blasting in Japan. However the system has a few problems, such as additional requirements to the system and air pollution in a tunnel by blast fume.
A blasting method using bulk emulsion explosives which is developed overseas presents a solution to the above such problems, but the introduction of the method is difficult under the regulations in Japan. Authors have developed a bulk emulsion blasting system that complies with the regulations, and verified and studied its work efficiency and feasibility of blasting performance.
