| 正循环机械回转钻孔灌注桩在卵石层中的应用 |
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| 引用本文： | 皮跃进.正循环机械回转钻孔灌注桩在卵石层中的应用[J].福建地质,2009,28(3):250-252. |
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| 作者姓名： | 皮跃进 |
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| 作者单位： | 福建省第二地质工程公司,永安,366000 |
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| 基金项目： | 本文根据西安绕城高速公路谢王立交桥施工项目资料的基础上加以总结编写而成,承蒙福建省地质矿产勘查开发局张荫汕教授级高级工程师审阅,并指出宝贵的修改意见,在此深表谢意! |
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| 摘 要： | 在粒径、密实度较大的卵石层采用正循环机械回转钻进行灌注桩施工，存在钻具类型、合理的泥浆比例和钻探工艺等问题。以西安绕城高速公路谢王立交桥桥桩基工程实践为例，探讨正循环机械回转钻孔灌注桩在卵石层施工工艺等问题。
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| 关 键 词： | 正循环机械回转钻 灌注桩 卵石地层 施工工艺 |
Application of the Positive Cycle Mechanical Rotary Boring Grout Pile on the Pile Construction of the Pebble Bed |
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| Pi Yuejin.Application of the Positive Cycle Mechanical Rotary Boring Grout Pile on the Pile Construction of the Pebble Bed[J].Geology of Fujian,2009,28(3):250-252. |
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| Authors: | Pi Yuejin |
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| Institution: | Pi Yuejin(No.2 Geo-engineering Company of Fujian Province,Yongan,366000) |
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| Abstract: | The method of the positive cycle mechanical rotary drilling can be applied on the construction of grout piles in the pebble bed with a great grain size and compaction degree,but some problems such as the types of drilling tool,reasonable slurry proportion and drilling technique must be raveled out for one thing.Taking the engineering practice of an overpass bridge pile foundation for an example,the author probed into some technic problems which will be encountered in the construction of the positive cycle m... |
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| Keywords: | positive cycle mechanical rotating drilling pebble strata construction technique |
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