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http://dx.doi.org/10.9711/KTAJ.2016.18.6.511

A study on the excavation cycle by the drill-and-blast method for a room-and-pillar underground structure  

Lee, Chul-Ho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Hyun, Young-Hwan (ESCO Consultant & Engineers Co., Ltd)
Hwang, Je-Don (ESCO Consultant & Engineers Co., Ltd)
Choi, Soon-Wook (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Kang, Tae-Ho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Chang, Soo-Ho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.18, no.6, 2016 , pp. 511-524 More about this Journal
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
Room-and-pillar method; Drill-and-Blast; Excavation; Sequence; Construction period;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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