Research on Ore Loss and Dilution Control Based on Three-dimensional Visualization

The loss and dilution of ore are two important indicators in the evaluation of goaf operation. In order to more timely and accurately reflect the loss and dilution rate after the end of each stope mining, this paper uses BLSS-HL three-dimensional laser scanning system to scan two goafs (724 # -2,714 #) in a deep mining area of a gold mine, and establishes a three-dimensional visualization model. Based on the point cloud data of the two goafs obtained by scanning, the point cloud data of the two goafs are processed by Cloud Compare point cloud processing software. Based on the point cloud data, the 3DMine mining software was used to establish the solid model of the two goafs, and the loss and dilution index was calculated, so as to realize the visualization of the loss and dilution of the stope. The goaf volume of 724 # -2 stope is 15890.87m3, the dilution rate is 3.12%, and the loss rate is 16.59%. The goaf volume of 714 stope is 10266.22m3, the dilution rate is 27.21%, and the loss rate is 14.15%. Based on the empty area model, the depletion loss of the two stopes was analyzed. The blast hole profile of 724 # -2 stope is established, which provides a reference for the design of medium-deep hole low-depletion blasting in two-step stope.