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Gold Science and Technology >

2022 , Vol. 30 >Issue 6: 978 - 985

DOI: https://doi.org/10.11872/j.issn.1005-2518.2022.06.104

Mining Technology and Mine Management

Automatic Sampling Method of Blasting Boundary Lines and Automatic Upda-ting Method of Bench Top and Bottom Lines Based on Blasting Hole Layout

  • Xin CHEN , 1, 2
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  • 1. Changsha Digital Mine Co. , Ltd. , Changsha 410083, Hunan, China
  • 2. Research Center of Digital Mine, Central South University, Changsha 410083, Hunan, China

Received date: 2022-08-19

  Revised date: 2022-10-21

  Online published: 2023-01-06

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Highlights

Open pit mine current surface model is the foundation of digital，information and intelligent construction，which provides model for planning，blast designing and truck dispatching.With the progress of production，the 3D model of the current status of open-pit mining has been in flux.The mine needs to be equipped with special surveying and technical personnel to frequently measure and model the current status of open-pit mining.Combining with the blasting hole coordinates，blasting boundary point automatic sampling method was proposed based on blasting hole layout and blasting parameters.Then using α-shape to create complex blasting area boundary lines.Spatial distribution relation between blasting area boundary lines and bench lines was researched，and automatic updating method of open pit mine bench lines was proposed.DTM was constructed by topographic line constrained Delaunay.Field test results show that automatic sampling method of blasting boundary and updating method of bench top and bottom lines is efficient.Time-consuming of surface model updating is decreased from 4 h to 1 min.This method is also suitable for measuring the corner coordinates of blasting area or based on the trajectory coordinates of shovel hauling equipment.It provides technical means and reference value for automatic updating of 3D model of open-pit mining status with different technical conditions.

Cite this article

Xin CHEN . Automatic Sampling Method of Blasting Boundary Lines and Automatic Upda-ting Method of Bench Top and Bottom Lines Based on Blasting Hole Layout[J]. Gold Science and Technology, 2022 , 30(6) : 978 -985 . DOI: 10.11872/j.issn.1005-2518.2022.06.104

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http://www.goldsci.ac.cn/article/2022/1005-2518/1005-2518-2022-30-6-978.shtml

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