| 旋挖钻进中硬岩及卵砾层钻头结构及施工工艺研究 |
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| 引用本文： | 张公正. 旋挖钻进中硬岩及卵砾层钻头结构及施工工艺研究[J]. 探矿工程, 2005, 32(2): 40-42 |
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| 作者姓名： | 张公正 |
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| 作者单位： | 中国地质科学院勘探技术研究所 |
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| 摘 要： | 旋挖钻进技术作为一种高效优质的钻进方法近年来广泛地被用于公路、铁路及大型水电站基础工程施工建设中，取得了良好的社会效益和经济效益。探讨了在卵砾石、漂石等复杂地层以及坚硬基岩中进行旋挖钻进所用钻头的结构及其施工工艺。
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| 关 键 词： | 旋挖钻进；硬岩；卵砾层；漂石；螺旋钻头；筒式牙轮钻头；冲抓锥；旋挖斗；冲击钻头 |
| 收稿时间： | 2004-12-20 |
| 修稿时间： | 2004-12-20 |
Research on the Bit Structure and Construction Technology of Rotary Drilling in Hard Rock and Gravel |
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| ZHANG Gong-zheng. Research on the Bit Structure and Construction Technology of Rotary Drilling in Hard Rock and Gravel[J]. Exploration Engineering:Rock & Soil Drilling and Tunneling, 2005, 32(2): 40-42 |
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| Authors: | ZHANG Gong-zheng |
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| Affiliation: | Institute of Exploration Technique, CAGS |
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| Abstract: | Rotary drilling technology is a kind of high efficient drilling method which has been widely used in the foundation engineering of highway, railway and large hydropower station. It has a very signification for social and economy. The discussion was made on the technology used in gravel, boulder and hard rock formation. |
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| Keywords: | rotary drilling hard rock gravel boulder screw bit bit barrel cone grab rotary barrel percussion bit |
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