Application Of Digital Electronic Detonator In The Blasting

The theoretical studies,numerical simulation and engineering practice were used tostudy precision delay and effective blasting implementation effect by adopting of digitalelectronic detonator.The main contents are as follows:Considering the problems such as more big rocks appeared during the blasting in theiron ore stope and greater impact on slope caused by blasting vibration, a series ofexperiments and research are made to compare the digital electronic detonators withhigh-precision nonel detonators in blasting, according to the blasting vibration monitoringand blasting effect assessment, the optimal delay time interval of digital electronicdetonators for this mine is found which has improved the blasting effects of the stope,reduced the blasting vibration obviously and increased the loading rate greatly. The studyshows that digital electronic detonators have good application and promotion prospect invibration reduction and blasting effect improvement.In order to eliminate the existingpotential risks of mining due to the goaf, effective treatments are timely needed to dealwith goaf for mine. Accordance with the conventional way to dealing with the goaf is notonly difficult and potential risks but also high cost. For this purpose, the use of electronicdigital detonator blasting technology is proposed,from the surface perforation,which trulyachieve treating goaf by one blasting with full bore height,filling the goaf with miningrocks while the forming shaft makes a pass for backfilling more mined-out areas fromoutside. The experiment used digital electronic detonators successfully formed32m shaftby one blasting and processed the goaf well, which provide new ways and means for goaftreatments and has typical promotional significance.