- 권한신청
- P-ISSN2233-8292
- E-ISSN2287-4747
- KCI
ISSN : 2233-8292
주방식 지하구조물의 발파 굴착공정 분석 연구
A study on the excavation cycle by the drill-and-blast method for a room-and-pillar underground structure
현영완 ((주)에스코컨설턴트)
황제돈 ((주)에스코컨설턴트)
최순욱 (한국건설기술연구원)
강태호 (한국건설기술연구원)
장수호 (한국건설기술연구원)
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초록
주방식 지하구조물은 룸과 암주로 이루어진 격자 형태의 지하구조물로 굴착순서에 따라 주방식 지하구조물의 시공성과 경제성이 좌우될 수 있다. 선행연구에서는 주방식 지하구조물의 굴착공정에서 중요하게 다뤄질 수 있는 발파굴착 공정을 장비 운영과현행 발파 규정 및 건설공사 표준품셈에 근거하여 검토하였다. 굴착공법으로는 점보드릴을 이용한 발파공법을 가정하였으며, 기존연구에서 제시한 가로․세로 병행시공방식으로 검토하였다. 연구에서 고려한 단면의 크기에 따라 필요한 착암 공정에 대한 천공시간을 산정하였으며 기존 도로터널 사례를 통해 버력처리 및 지보재 설치 공정의 소요시간을 산정하였다. 굴진면 운용 수를 고려하여 굴착 사이클을 산출하였으며 이를 통해 운영가능한 천공장비의 최대 대수와 최소 대수를 수식화하여 제시하였다.
- keywords
- 주방식 공법, 발파굴착, 굴착, 공정, 공사기간, Room-and-pillar method, Drill-and-Blast, Excavation, Sequence, Construction period
Abstract
Since a room-and-pillar underground structure is characterized by its grid-type array of room and pillar, its economical efficiency can be governed by excavation sequence. In this study, the construction period by the drill-and-blast method as a excavation method for a room-and-pillar underground structure was examined. In addition, the parallel excavation sequence was considered as the main sequence of a room-and-pillar underground structure. Sequences of mucking and support installation were derived to estimate the total excavation cycle by taking the case of a road tunnel into consideration. From the excavation cycle of room-and-pillar underground structure, the relationship between available maximum and minimum numbers of jumbo drill machines depending on the number of faces in operation was suggested.
- keywords
- 주방식 공법, 발파굴착, 굴착, 공정, 공사기간, Room-and-pillar method, Drill-and-Blast, Excavation, Sequence, Construction period
참고문헌
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