In order to reduce the labor intensity and human subjective error of the artificial scale of the Simpson method to measure the distance between each section of the blasting funnel and the distance between the pre-explosion and post-explosion measurement points, in the series blasting funnel test of the Jinchanghe mine, based on the characteristic of the tunnel laser profiler on the basis of measuring the current section, the pre-explosion (post) data of each measurement section was measured, and then it was imported into the 3Dmine software three-dimensional model to calculate the blasting funnel volume, and the relationship curve diagram and fitting analysis were drawn using Origin. Reasonable rock drilling and blasting parameters for large-diameter deep hole mining in underground mines are proposed, which lays a solid technical foundation for the production of mines. The recommended drilling and blasting parameters are: the spacing between the middle hole and the side hole is 2.6 m; The row spacing between the middle hole and the side hole is 2.8 m and 2.6 m, respectively; layered collapse height height 2.6 m; The unit consumption of explosives is 0.46 to 0.51 kg/t.