Research on Intelligent Analysis Method of Minimum

At present, the traditional method of obtaining the minimum resistance line in mines is still to use the latitude and longitude instrument to draw the corresponding section map where the borehole is located and then use the circle solution method to find out the shortest distance from the borehole axis to the trapezoidal slope. This method is difficult to map in the open pit mine, with low accuracy and low automation level. An intelligent analysis method of minimum resistance line distance based on a 3D point cloud model is proposed. According to the structural characteristics of the open pit mine, the raster data is established by the point cloud data, and the free surface and non-free surface are automatically separated by the standard deviation of the height difference, and then the minimum resistance line is extracted. The engineering application shows that the method provides efficient data support for the 3D mining software to carry out mining design, block delineation, planning and blasting design of open pit mines, and significantly improves the efficiency and management level of mine blasting.