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| 桩基筒形翼状钻头的改进设计及应用 | |
| 引用本文： | 杨建林,兰凯,段隆臣,张涛,徐辉雄.桩基筒形翼状钻头的改进设计及应用[J].地质科技情报,2005,24(Z1):19-22. |
| 作者姓名： | 杨建林 兰凯 段隆臣 张涛 徐辉雄 |
| 作者单位： | 1. 中国地质大学研究生院,武汉,430074;江西省地质工程总公司,南昌,330002 2. 中国地质大学研究生院,武汉,430074 3. 中国地质大学工程学院,武汉,430074 |
| 摘 要： | 针对浙江省温州市世贸中心大厦桩基施工中硬岩钻进时出现的堵管、卡钻和效率低等问题,从所钻地层和钻头的磨损分析出发,提出了钻头的改进设计方案.改进型筒形翼状钻头比原先使用的平底滚刀钻头增加了18个孕镶金刚石-针状硬质合金复合式钻齿和3个钎头,并按受力特点进行了合理分布.实际钻进效果表明改进型钻头应用于超深、大直径钻孔的钻进效率较高、钻进过程平稳.针对钻头的实际磨损情况提出了钻头进一步改进设计的建议. |
| 关 键 词： | 大直径灌注桩 筒形翼状钻头 金刚石硬质合金复合式钻齿 |
| 文章编号： | 1000-7849(2005)S0-0019-04 |
| 修稿时间： | 2005年3月3日 |
Improved Design and Experiment of A Cylindrical Wing-Form Bit Used in Pile Foundation Engineering |
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| YANG Jian-lin,LAN Kai,DUAN Long-chen,ZHANG Tao,XU Hui-xiong.Improved Design and Experiment of A Cylindrical Wing-Form Bit Used in Pile Foundation Engineering[J].Geological Science and Technology Information,2005,24(Z1):19-22. | |
| Authors: | YANG Jian-lin LAN Kai DUAN Long-chen ZHANG Tao XU Hui-xiong |
| Abstract: | Some problems,such as drilling resistance and low efficiency,occurred during the pile foundation installation of Wenzhou International Trade Centre, Zhejiang Province. Some improvement design of the drilling bit is put forward according to the analysis of the rock strata and bit wear. The improved cylindrical wing-form bit has 18 diamond tungsten carbide composite button bits and 3 button bits more than the original drilling bit,with drilling cutters arranged according to the force on bit. The practical drilling illustrates efficiency improvement and stable drilling process. Futher design improvement is suggested according to the practical bit wear. |
| Keywords: | large-diameter cast-in-situ pile cylindrical wing-form bit diamond tungsten carbide composite button |
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