松花江水下爆破孔施工技术

Underwater Blasthole Drilling Technique

摘要:

在东北严寒季节，在松花江上施工水下爆破孔。介绍了施工设备及施工平台。根据不同地层分别采用静压振动下套管护壁及潜孔锤钻进方法，设计了风路系统，改进了套管连接方法，并采取了科学的管理方法，取得了较好的效果。

Abstract:

Underwater blastholes had been drilled under the Songhua River during the freezing season in the Northeast. The drilling equipment and operation platform are described. Depending on different formations, the static pressure vibration method was used to sink casings for hole wall protection and the DTH drilling method was employed. The air circuit system was designed with the casing connection method improved. The scientific management method was carried out. These resulted in fairly good effects.