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2020 Vol.30, Issue 4 Preview Page

Original Article

Analysis of Parameters Affecting LiDAR Intensity on Rock

암석에 대한 라이다 반사강도의 영향 인자 분석

Moonjoo Kim1
,
Sudeuk Lee2
,
Seokwon Jeon3*
김 문주1
,
이 수득2
,
전 석원3*
1Master's Course, Department of Energy Systems Engineering, Seoul National University
2Ph.D Candidate, Department of Energy Systems Engineering, Seoul National University
3Professor, Department of Energy Systems Engineering, Seoul National University
1서울대학교 에너지시스템공학부 석사과정
2서울대학교 에너지시스템공학부 박사과정
3서울대학교 에너지시스템공학부 교수
* Corresponding Author
31 August 2020. pp. 417-431
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Abstract

In this study, a fundamental investigation was made on how to use LiDAR technology to determine the degree of weathering and alteration of rock mass. The purpose of the study was to identify the affecting parameters to LiDAR intensity and to quantitatively assess the relations among them through laboratory-scale experiment. A few potential affecting parameters were selected including scanning distance, incidence angle, surface roughness, surface color, mineral composition, and water saturation. In the experiment, FARO LiDAR unit was used for twelve different types of specimen. It was observed that the intensity was affected by, in the order of importance, surface color, incidence angle, scanning distance, property of rock, water condition, and surface roughness.

Keywords
LiDAR
Intensity
Rock alteration
RGB color information
Rock mass characterization

이 연구에서는 라이다(LiDAR) 반사강도를 이용하여 암반 풍화도 및 변질도를 산정하는 작업의 기초연구를 진행하였다. 실내 시험을 통하여 라이다 반사강도에 직접적으로 영향을 미치는 인자와 그 영향 정도를 정량적으로 고찰하고자 하였다. 영향 인자로는 주사거리, 입사각, 표면거칠기, 표면색상, 암석물성, 광물조성, 포화도를 선정하였다. 실험에서는 FARO 라이다 장비와 12가지 종류의 시험편을 사용하였다. 실험 결과 반사강도는 표면색상, 입사각, 주사거리, 암석물성, 포화도 혹은 표면습윤상태, 표면거칠기 순으로 영향을 크게 미치는 것으로 나타났다.

키워드
라이다
반사강도
암석 변질도
RGB 색상 정보
암반 특성
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Information
  • Publisher :Korean Society for Rock Mechanics and Rock Engineering
  • Publisher(Ko) :한국암반공학회
  • Journal Title :Tunnel and Underground Space
  • Journal Title(Ko) :터널과 지하공간
  • Volume : 30
  • No :4
  • Pages :417-431
  • DOI :https://doi.org/10.7474/TUS.2020.30.4.417
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