作为当今五大钻探技术之一的液动冲击回转钻探的技术核心是液动冲击器。
Hydraulic rotary-percussion drilling is one of five important drilling techniques recently. Itstechnique nucleus is hydro-percussive tools.
基岩钻探方法以采取普通硬质合金清水回转垂直取心钻进，覆盖层采用干钻。
For bedrock drilling ordinary hard alloy driller can be adopted for vertical core-drilling with the addition of clear water during rotation. for overburden dry drilling process can be adopted.
根据钻探技术的历史经验，建议应进行大直径反循环回转钻进井底过程的研究。
Based on the historical experience of drilling technology, it is proposed to study the bottom process of large diameter reverse circulation rotary drilling.
研究不同温度条件下冲击回转凿岩规律具有重要意义，可以为设计地热开采的新型钻探方法提供理论依据。
Study on the percussive rotary drilling law under various temperatures is of great significance because it can provide a theoretical basis for new drilling process designed for geothermal production.
以施工实践为基础，结合理论分析，提出了一种在岩土锚固工程施工中广泛应用的新型钻探工艺技术———螺旋冲击回转钻进技术。
Combined with projects, this paper introduced several kinds of anchor drilling technics in side slope anchoring project by anchorage cable and anchor rod.
以施工实践为基础，结合理论分析，提出了一种在岩土锚固工程施工中广泛应用的新型钻探工艺技术———螺旋冲击回转钻进技术。
Combined with projects, this paper introduced several kinds of anchor drilling technics in side slope anchoring project by anchorage cable and anchor rod.
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