2results about How to "Reduce chunk rate" patented technology

The application discloses a CO2 blasting intelligent control system and method based on digital twinning and edge computing, which deeply integrates wireless ad hoc network, radio frequency energy activation, edge computing collaborative decision and digital twinning modeling, realizes technical leap from preset triggering to intelligent closed loop, generates personalized parameters based on digital twinning model, combines edge computing real-time sensing and collaborative decision, reduces blasting vibration, improves ore crushing uniformity, reduces secondary crushing energy consumption, and improves blasting accuracy; radio frequency energy activation and electronic safety lock mechanism are adopted to realize zero live standby before detonation, eliminate early explosion risk caused by stray current and misoperation; the operator can complete all operations in a safe area one kilometer away, which essentially improves safety; through the wireless ad hoc network, the disconnection failure of wired connection is eliminated, intelligent collaborative detonation reduces the large block rate, the feedback optimization mechanism continuously reduces the unit consumption of explosives, and the comprehensive cost is reduced.

This invention discloses a bench blasting method for reducing the proportion of large blocks in bedding rock mass in open-pit mines. An auxiliary blasting zone is arranged on the side of the normal blasting zone away from the bench slope of the rock mass. The width W2 of the auxiliary blasting zone is calculated using formula (1). At least one row of auxiliary blast holes is arranged within the auxiliary blasting zone, with the arrangement and spacing of the auxiliary blast holes following the normal blasting zone. The depth of each row of auxiliary blast holes is calculated using formula (2). This method utilizes auxiliary blast holes during bench blasting, effectively breaking up the rock mass in the auxiliary blasting zone. This solves the problem of large or even super-large blocks being generated by the rock mass sliding down along joint surfaces after the normal blasting of the rear rows of blast holes, effectively reducing the proportion of large blocks. The arrangement of auxiliary blast holes ensures a more uniform distribution of explosives within the rock mass to be blasted, resulting in more uniform rock mass size and a lower proportion of large blocks after blasting, which is beneficial for improving the efficiency of subsequent loading operations.