Spatial surveying characteristics and reconstruction method of millimetre wave radar in complex environment of coal mine roadway

Authors

XUE Xusheng, College of Mechanical and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China; Shaanxi Key Laboratory of Mine Electromechanical Equipment Intelligent Detection and Control, Xi’an University of Science and Technology, Xi’an 710054, ChinaFollow
YANG Xingyun, College of Mechanical and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China; Shaanxi Key Laboratory of Mine Electromechanical Equipment Intelligent Detection and Control, Xi’an University of Science and Technology, Xi’an 710054, ChinaFollow
YUE Jianing, College of Mechanical and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China; Shaanxi Key Laboratory of Mine Electromechanical Equipment Intelligent Detection and Control, Xi’an University of Science and Technology, Xi’an 710054, China
WANG Chuanwei, College of Mechanical and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China; Shaanxi Key Laboratory of Mine Electromechanical Equipment Intelligent Detection and Control, Xi’an University of Science and Technology, Xi’an 710054, China
MAO Qinghua, College of Mechanical and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China; Shaanxi Key Laboratory of Mine Electromechanical Equipment Intelligent Detection and Control, Xi’an University of Science and Technology, Xi’an 710054, China
MA Hongwei, College of Mechanical and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China; Shaanxi Key Laboratory of Mine Electromechanical Equipment Intelligent Detection and Control, Xi’an University of Science and Technology, Xi’an 710054, China
WANG Rongquan, Xi’an Heavy Industry Hancheng Coal Mining Machinery Co., Ltd., Hancheng 715400, China

Abstract

Objective Underground spatial surveying of coal mine is an important part of transparent geological modelling for coal mine. However, the complex environment of coal mine roadway, incomplete information acquisition, insufficient accuracy of sensed data and other difficulties need to be urgently solved. Methods First, the signal characteristics of millimeter wave radar under the complex environmental factors such as dust, water mist, surrounding rock structure, etc. were studied in depth, the millimeter wave signal attenuation model was established for the surrounding rock of coal mine roadway, and the influence mechanism of complex environmental factors for millimeter wave radar was comparatively analyzed. Second, in view of the problem of millimeter wave radar based digital roadway modelling in the complex environment of coal mine, the Poisson surface reconstruction method based on millimeter wave radar point cloud for the roadway space was proposed. Through experimental tests and simulated roadway environment verification, the spatial surveying and digital modelling reconstruction of the coal mine roadway was achieved on the basis of revealing the millimetre-wave radar sensing mechanism under the complex environmental conditions of the coal mine. Results and Conclusions The results show that: (1) The millimetre-wave radar could adapt to the underground coal mine roadway environment with a lot of dust, water mist and rough surrounding rock, and provide effective data for the spatial reconstruction of the coal mine roadway. (2) The Poisson surface reconstruction method could fully display the real information on surrounding rock of roadway, and the average absolute error percentage is 0.59% for the reconstructed total roadway width, and 0.78% for the total roadway height. Generally, the study of millimeter-wave radar spatial surveying characteristics and reconstruction methods in the complex environment of coal mines provides the spatial surveying data of roadway for transparent geological modelling of coal mines, which is of great significance in promoting the intelligent mining of coal mines.

Keywords

millimetre-wave radar, complex environment, roadway modelling, space surveys, coal mine

DOI

10.12363/issn.1001-1986.24.05.0347

Recommended Citation

XUE Xusheng, YANG Xingyun, YUE Jianing, et al. (2024) "Spatial surveying characteristics and reconstruction method of millimetre wave radar in complex environment of coal mine roadway," Coal Geology & Exploration: Vol. 52: Iss. 10, Article 18.
DOI: 10.12363/issn.1001-1986.24.05.0347
Available at: https://cge.researchcommons.org/journal/vol52/iss10/18

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