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| 孵漂石地层大口径钻头与钻进工艺的选择 | |
| 引用本文： | 荆和平 经明 等. 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, 37(4): 79-80 |
| 作者姓名： | 荆和平 经明 等 |
| 作者单位： | 山西冶金岩土工程勘察总公司, |
| 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。 |
| 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 |
| 文章编号： | 0495-5331(2001)04-0079-02 |
| 修稿时间： | 2000-05-10 |
THE ALTERMATIVE OF LARGE DIAMETER BORED BIT AND DRILLING TECHNOLOGY IN THE BOULDER BED |
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| JING He-ping,JING Ming,LIU Ning-sheng. THE ALTERMATIVE OF LARGE DIAMETER BORED BIT AND DRILLING TECHNOLOGY IN THE BOULDER BED[J]. Geology and Prospecting, 2001, 37(4): 79-80 | |
| Authors: | JING He-ping JING Ming LIU Ning-sheng |
| Abstract: | 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. |
| Keywords: | large diameter bored piles boulser bde reverse parcussive circulation rolling-cuter-type bit |
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