| 娄江特大桥深孔泵吸反循环工艺的改进 |
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| 引用本文： | 张广亮,刘建涛,陈益敏. 娄江特大桥深孔泵吸反循环工艺的改进[J]. 探矿工程, 2011, 38(6): 47-50 |
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| 作者姓名： | 张广亮 刘建涛 陈益敏 |
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| 作者单位： | [1]河南省地矿建设工程（集团）有限公司,河南郑州450007 [2]河南省地矿局第二水文地质工程地质队,河南郑州450007 |
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| 摘 要： | 随着国家基础设施投入的加大,桩径1000－2000 mm、孔深100－130 m的钻孔灌注桩在各类工程中屡被采用。泵吸反循环传统上被用于孔深不超过80 m的深孔,在京沪高铁第六标段娄江特大桥钻孔灌注桩施工中,通过对现有的反循环钻机进行改进,很大程度上提高了泵吸反循环的工作效率,顺利地完成了孔深131 m、桩径1.8 m桩孔的施工,产生了很好的经济效益。
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| 关 键 词： | 泵吸反循环 大直径 超深孔 灌注桩 钻机改进 |
| 收稿时间： | 2010-11-23 |
| 修稿时间： | 2011-06-10 |
Improvement on Deep Hole Pump-suction Reverse Circulation Technology in Super Large Bridge |
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| ZHANG Guang-liang,LIU Jian-tao and CHEN Yi-min. Improvement on Deep Hole Pump-suction Reverse Circulation Technology in Super Large Bridge[J]. Exploration Engineering:Rock & Soil Drilling and Tunneling, 2011, 38(6): 47-50 |
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| Authors: | ZHANG Guang-liang LIU Jian-tao CHEN Yi-min |
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| Affiliation: | 1.Henan Geological ＆ Mineral Resources Construction Engineering 〈Group〉 Co.,Ltd.,Zhengzhou Henan 450007,China;2.No.2 Hydrogeology and Engineering Geology Team,Henan Provincial Bureau of Geo-exploration and Mineral Development,Zhengzhou Henan 450007,China) |
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| Abstract: | The bored-grouting pile with diameter of 1000~2000 mm and depth of 100~130 m are often used in various projects.Pump-suction reverse circulation was traditionally used in the hole not more than 80 m deep,but by the improvement on the existing reverse circulation drill,the efficiency of pump-suction reverse circulation was greatly improved with pile hole of 1.8 m in diameter and 131 m in depth finished. |
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| Keywords: | pump-suction reverse circulation large diameter ultra-deep hole grouting pile drilling rig improvement |
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