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A preliminary study on the excavation sequence of a room-and-pillar underground structure by the drill-and-blast method
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 Title & Authors
A preliminary study on the excavation sequence of a room-and-pillar underground structure by the drill-and-blast method
Lee, Chulho; Hyun, Younghwan; Song, Junho; Chang, Soo-Ho;
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 Abstract
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 (), 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.
 Keywords
Room-and-pillar underground structure;Drill and blasting;Excavation;Construction period;
 Language
Korean
 Cited by
1.
주방식 지하구조물의 발파 굴착공정 분석 연구,이철호;현영환;황제돈;최순욱;강태호;장수호;

한국터널지하공간학회 논문집, 2016. vol.18. 6, pp.511-524 crossref(new window)
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