福建某船厂注水式干船坞工程坞口前沿大方量岩坎爆破施工技术

Technology of Blasting to Remove Large Rock Mass in Front of Entrance of a Dry-dock in Ship Building Yard in Fujian

福建某船厂万吨级船坞工程为保证干施工需要 ,在坞口前沿预留了一段岩坎 ,其上建有挡水围堰。文章介绍了船坞主体完工后 ,坞口前沿岩坎大方量 (2 0 0 0 0 m3)

To ensure construction in the dry during the building of a dry dock for vessels of up to 10 000 dwt in a ship building yard in Fujian Province,China,a rock ledge was left in front of the dock entrance and,on top of the ledge,a retaining cofferdam was erected.This paper presents a description of the preparation of the technical scheme and the technology for blasting to remove the massive rock ledge(of 20 000m 3 after the main body of the dock was completed.