新疆某矿床负压钻进施工工艺技术研究

Research on Negative Pressure Drilling Constructon Technology in Certain Deposit in Xinjiang

介绍了高压气束负压钻进施工工艺技术的工作原理以及在新疆某矿床200 m深度条件下实施负压钻进施工技术的可行性与实施效果,提出了负压钻进的主要工艺技术、施工步骤及关键性技术环节和注意事项。负压施工的钻孔,其钻孔的结构明显改善,水量明显提高。效果良好,负压钻进施工工艺技术可以成为优化地浸开采的一个重要手段。

The paper describes the operating principles of negative-pressure drilling at high air pressure and its feasibility and implementation results at 200 m depth in certain deposit in Xinjiang. The main technology, procedure, key technical links and matters needing attention of negative pressure drilling are presented. When negative pressure drilling is used in construction, the drill-hole structure can be evidently improved, and the water amount remarkable raised, bringing good results. Therefore, negative pressure drilling technology can be an important means in optimizing in-situ leaching mining.