SF—1型双壁管水力反循环连续取样新砂钻的成功应用

SF-1 Model Double-barreled Hydraulic Countercirculation Continuous Sampling Machine for Placer Drilling

本文介绍了SF—1型双壁管水力循环连续取样新砂钻的结构、主要技术参数以及钻进工艺。

The structure,main technical parameters and drilling technology of the SF-1 model double-barreledhydraulic counter circulation continuous sampling machine for placer drilling are introduced.Test drill-ing in offshore gold ore area has met with success.