| 荆和平,经明.孵漂石地层大口径钻头与钻进工艺的选择[J].地质与勘探,2001,(4):79-80 |
| 孵漂石地层大口径钻头与钻进工艺的选择 |
| THE ALTERMATIVE OF LARGE DIAMETER BORED BIT AND DRILLING TECHNOLOGY IN THE BOULDER BED |
| 修订日期：2000-05-10 |
| DOI： |
| 中文关键词: 钻孔灌注桩 孵漂石地层 冲击反循环 滚刀钻头 钻进工艺 钻进效率 |
| 英文关键词: large diameter bored piles,boulser bde,reverse parcussive circulation,rolling-cuter-type bit, |
| 基金项目: |
| 荆和平 经明 |
| 山西冶金岩土工程勘察总公司，太原030002 |
| 摘要点击次数: 2011 |
| 全文下载次数: 1481 |
| 中文摘要: |
| 根据工程实例，通过钻头和钻进工艺的对比试验，得出了利用大直径滚刀钻头，在致密卵漂石地层施工中大口径桩孔，能大幅度提高钻进效率。 |
| 英文摘要: |
| According to th concrete examples,through comparative test between bit and drilling technology we came to the conclusing that the use of large diameter rolling-cutter-type bit could raise greatly the drilling efficiency wher large diameter bored piles are operated in the compact boulder bed. |
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