小口径金刚石钻进在大岗山水电站帷幕灌浆工程中的应用

Application of Small Diameter Diamond Drilling in Curtain Grouting for a Hydropower Station

摘要:

以小口径金刚石钻进在大岗山水电站帷幕灌浆工程中的应用为例，总结了小口径金刚石钻进在坚硬地层中的施工技术。从设备机具的选择、施工工艺、相关参数的确定、钻进中遇到的常见问题及预防措施等方面进行了论述，并结合钻孔轨迹平面投影图对孔斜进行分析。

Abstract:

By an engineering case of small diameter diamond drilling in Dagangshan hydropower station, the paper summarizes the construction technology of small diameter diamond drilling in hard formation. The description includes the choice of equipment machinery, construction technology, the determination of the relevant parameters, common problems in drilling and prevention measures. And analysis is made on the borehole deviation according to plane projection drilling track.