| SH25H型液压风动冲击钻机在大口径硬岩钻孔灌注桩施工中的试验研究 |
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| 引用本文： | 何龙飞,林坚,孙亚军,王宇清.SH25H型液压风动冲击钻机在大口径硬岩钻孔灌注桩施工中的试验研究[J].探矿工程,2010,37(8):41-43,46. |
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| 作者姓名： | 何龙飞 林坚 孙亚军 王宇清 |
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| 作者单位： | 上海金泰工程机械有限公司,上海安亭201805 |
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| 摘 要： | 根据京沪高速铁路徐州东站大口径嵌岩灌注桩工程,试制SH25H型液压风动冲击钻机？采用气动潜孔锤空气正循环组合钻进工艺,结合捞砂桶排渣,摸索总结出一套针对硬岩地层的干式成孔新方法,钻进效率及钻孔质量显著提高,为大直径成孔施工增添了一种新的方法。
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| 关 键 词： | 大口径 嵌岩灌注桩 捞砂桶 液压风动冲击钻机 |
| 收稿时间： | 2010/3/8 0:00:00 |
| 修稿时间： | 2010/6/24 0:00:00 |
Experimental Study on SH25H Hydraulic and Pneumatic Impact Drill in Large Diameter Bored-grouting Pile Construction in Hard Rock |
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| HE Long-fei,LIN Jian,SUN Ya-jun and WANG Yu-qing.Experimental Study on SH25H Hydraulic and Pneumatic Impact Drill in Large Diameter Bored-grouting Pile Construction in Hard Rock[J].Exploration Engineering(Drilling & Tunneling),2010,37(8):41-43,46. |
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| Authors: | HE Long-fei LIN Jian SUN Ya-jun and WANG Yu-qing |
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| Institution: | (Shanghai Jintai Engineering Machinery Co.,Ltd.,Shanghai 201805,China) |
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| Abstract: | By the large diameter rock-socket bored-grouting pile project in the construction of Beijing-Shanghai high-speed railway,the SH25H hydraulic pneumatic impact drill was trial manufactured with the pneumatic DTH and positive circulation rotary drilling technology,and chip removal was carried by bailing bucket.A new method for dry borehole drilling was explored and summarized with high drilling efficiency and high quality of borehole. |
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| Keywords: | large diameter rock-socket bored-grouting pile bailing bucket hydraulic and pneumatic impact drill |
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