During open-pit bench blasting, the movement trajectory of rock in the bench area is an important factor affecting the accurate mining of open-pit mines, especially for unevenly mineralized ore bodies. In order to solve the difficult problem that the internal movement trajectory of rock during bench blasting in the Wushan Cu-Mo mine is not clear, a tracking algorithm with signal markers was used on bench blasting tests at the Wushan Cu-Mo mine in Manzhouli. Through on-site installation, positioning, monitoring and data analysis of intelligent beacons, the research results showed that: the first row of beacons had a long motion time and fast movement with an average speed of 5.89.8 m/s. The movement distance was between 18.4 m and 29.4 m. Due to constraints and obstruction of the rock mass in the front section of the bench, the motion time, movement speed and distance of the#2 monitoring beacon were significantly reduced, with an average speed of 1.8~4.8 m/s and a movement distance of 5.3~14.2 m. The movement distance and time of the#3 blast hole beacon was the smallest, and the inclination angle of the#3-3 beacon reached about 25°. The inclination angles of#6-1, #6-2 and#6-3 beacons were relatively gentle at about 2°~8°. From the depth perspective, the shallow beacons move forward horizontally during the forward rush period, and there was a significant downward trend in the latter half. The vertical motion distance of the deep beacons was significantly smaller than that of the shallow beacons.

open-pit mine  /  bench blasting  /  trajectory of rock movement  /  signal marker