大源渡枢纽船闸下游口门区的炸礁工程施工

Construction of Rock Blasting at the Entrance of the Downstream Shiplock of Dayuandu Junction

为确保大源渡枢纽船闸口门区新航道按期通航的要求，采用了水下钻孔爆破和围堰干地炸礁相结合的施工方案，整治工程施工季节性很强，要求在两个枯水期完成８．２万ｍ＾３炸礁任务。

Channel regulation construction at the entrance area of Dayuandu Shiplock is greatly influenced by seasons, and a duty of 82,000 m3 rock blasting during two dry seasons is required. It introduces the successful experience in adopting the construction scheme of combining underwater drilling hole explosion with dried rock blasting within the cofferdam, which ensured opening of the new waterway on schedule.