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2025 Vol.35, Issue 4 Preview Page

Original Article

Pattern Projection Solution for Rapid and Accurate Tunnel Face Blasting Implementation

패턴 투영 기반 터널 막장면 발파의 신속 정확한 표시 솔루션 개발

Mehrishal Seyedahmad1
,
Junsu Leem2
,
Il-Seok Kang2
,
Young Jin Shin3
,
Juhyi Yim4
,
Jae-Joon Song5*
Seyedahmad Mehrishal1
,
임 준수2
,
강 일석2
,
신 영진3
,
임 주휘4
,
송 재준5*
1Senior Researcher, Research Institute of Energy and Resources, Seoul National University
2PhD Student, Department of Energy Resources Engineering, Seoul National University
3Senior Researcher, Hyundai Engineering & Construction, R&D Center
4Researcher, Hyundai Engineering & Construction, R&D Center
5Professor, Department of Energy Resources Engineering, Seoul National University
1서울대학교 에너지자원신기술연구소 책임연구원
2서울대학교 에너지시스템공학부 박사과정
3현대건설 안전품질연구팀 책임연구원
4현대건설 안전품질연구팀 연구원
5서울대학교 에너지자원공학과 교수
*Corresponding Author
31 August 2025. pp. 415-430
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Abstract

Traditional manual methods for marking blasting patterns are time-consuming and error- prone, with physical access limitations. This research presents a pattern projection system for the tunnel face that improves precision and efficiency in underground excavation. The software solution developed in this research enables the projection of blasting patterns directly onto tunnel faces using standard projectors, significantly reducing layout time and improving drilling accuracy. Three projected pattern alignment methodologies were evaluated: manual, automatic, and semi-automatic, with the semi-automatic approach proving most effective in balancing precision with operational practicality in challenging underground environments. Field validation demonstrated the system’s ability to visualize drilling patterns, geological information, and blast design parameters, resulting in reduced positioning errors, improved adaptability to field conditions, which could result in enhanced blasting outcomes. The system offers considerable advantages over previous projection methods, requiring no specialized hardware integration or expert personnel, while maintaining safety and operational flexibility. This technology effectively bridges the gap between digital design and physical implementation in tunnel excavation, supporting the digital transformation of underground construction practices.

Keywords
Digital tunneling
Underground visualization
Projection mapping
Blast design implementation
Drilling pattern visualization

기존의 발파 패턴 표시는 수작업에 의존해 노동집약적이고 오류가 발생하기 쉬우며, 작업자가 직접 접근해야 한다는 한계가 있다. 본 연구는 터널 막장면에 발파 패턴을 투영하여 지하 굴착의 정밀도와 효율성을 향상시키는 시스템을 제안한다. 이는 빔 프로젝터를 활용해 발파 패턴을 터널 막장면에 직접 투영할 수 있는 소프트웨어 솔루션으로 구성되며, 표시 작업 시간을 획기적으로 단축하고 천공 정확도를 향상시킨다. 수동, 자동, 반자동의 세 가지 패턴 정렬 기법을 비교한 결과, 반자동 방식이 정밀도와 현장 실용성 간의 균형 측면에서 가장 우수한 성능을 보였다. 제안된 시스템은 천공 패턴, 지질 정보, 발파 설계 정보를 시각화할 수 있으며, 위치 오차를 줄이고 현장 적용성을 높여 발파 결과를 개선할 수 있다. 본 시스템은 특별한 장비나 전문 인력 없이도 운용 가능하며, 안전성과 작업 유연성을 유지한다는 점에서 다른 투영 방식에 비해 명확한 장점을 갖는다. 본 연구를 통해 발파 설계와 실제 시공 간의 간극을 효과적으로 해소함으로써 지하 굴착 작업의 디지털 전환에 기여할 수 있다.

키워드
디지털 터널링
지하공간 시각화
투영 맵핑
발파 설계
천공 패턴
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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 : 35
  • No :4
  • Pages :415-430
  • Received Date : 2025-06-25
  • Revised Date : 2025-07-17
  • Accepted Date : 2025-07-28
  • DOI :https://doi.org/10.7474/TUS.2025.35.4.415
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