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발파 굴착에 의한 주방식 지하구조물의 굴착공기 분석 연구

A preliminary study on the excavation sequence of a room-and-pillar underground structure by the drill-and-blast method

  • 이철호 (한국건설기술연구원 지반연구소) ;
  • 현영환 ((주)에스코컨설턴트) ;
  • 송준호 ((주)에스코컨설턴트) ;
  • 장수호 (한국건설기술연구원 지반연구소)
  • Lee, Chulho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Hyun, Younghwan (ESCO Consultant & Engineers Co., Ltd.) ;
  • Song, Junho (ESCO Consultant & Engineers Co., Ltd.) ;
  • Chang, Soo-Ho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
  • 투고 : 2015.10.16
  • 심사 : 2015.10.30
  • 발행 : 2015.11.30

초록

주방식 지하구조물은 여러 개의 암주의 룸으로 구성된 격자 형태의 구조물로 굴착순서에 따라 주방식 지하구조물의 시공성과 경제성이 좌우될 수 있다. 본 연구에서는 주방식 지하구조물의 굴착공정에서 중요하게 다뤄질 수 있는 발파굴착 공정을 장비 운영과 현행 발파 규정 및 건설공사 표준품셈에 근거하여 검토하였다. 굴착공법으로는 점보드릴을 이용한 발파공법을 가정하였으며, 기존연구에서 제시한 가로 세로 순차시공방식으로 검토하였다. 주방식 지하구조의 계획부지 크기에 따라 굴착공기와 장비운영 등을 고려하여 전체 굴착공정을 예상할 수 있었으며 막장운영 계획에 따라 운영가능한 장비수를 고려하여 전체 굴착공기를 예상할 수 있었다.

A room-and-pillar underground structure is characterized by its grid-type array of room and pillar. As a result, its construction and economical efficiency can be governed by excavation sequence. In this study, the construction period by the drill and blast method which can be treated as a main sequence for excavation was examined by considering the regulation for blasting and construction standard of estimation in Korea. To evaluate the construction period for the room-and-pillar underground structure constructed in 4 kinds of square-type area ($30{\times}30{\sim}57{\times}57m$), the concurrent excavation pattern which was suggested in the previous researches was used. From the suggested condition, the total construction period by drill-and-blast method can be estimated with the consideration of the construction area, number of jumbo drill and faces in operation.

키워드

참고문헌

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