| 孔底注浆护壁在砂质含水层长螺旋钻孔灌注桩中的应用 |
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| 引用本文： | 李旭庆.孔底注浆护壁在砂质含水层长螺旋钻孔灌注桩中的应用[J].探矿工程,2009,36(10):61-63. |
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| 作者姓名： | 李旭庆 |
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| 作者单位： | 河南省地勘局地质二队,河南焦作454000 |
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| 摘 要： | 阐述长螺旋钻机在含水砂层施工中钻孔坍塌的原因和孔底注浆护壁的工艺原理，并通过工程实例，介绍孔底注浆护壁工艺在长螺旋钻孔灌注桩中的应用和效果，拓展了长螺旋钻孔灌注桩的适用条件范围。
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| 关 键 词： | 孔底注浆 长螺旋钻机 砂质含水层 护壁 钻孔灌注桩 |
| 收稿时间： | 2009/3/25 0:00:00 |
| 修稿时间： | 2009/3/25 0:00:00 |
Application of Wall Protection with Grouting Under-borehole in Long-spiral Bored Cast-in-situ Pile on Sandy Aquifer |
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| LI Xu-qing.Application of Wall Protection with Grouting Under-borehole in Long-spiral Bored Cast-in-situ Pile on Sandy Aquifer[J].Exploration Engineering(Drilling & Tunneling),2009,36(10):61-63. |
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| Authors: | LI Xu-qing |
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| Institution: | LI Xu-qing (2nd Geology Team under Henan Geology and Resources Surey Bureau, Jiaozuo Henan 454000, China) |
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| Abstract: | The paper discussed the reasons of bored hole collapsing in sandy aquifer construction with long-spiral driller and the technological principle of wall protection with grouting under-borehole with an engineering case; and also introduced the application and effect of this technology in long-spiral bored east-in-situ pile, the application limit for long-spiral bored hole pile was broadened. |
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| Keywords: | grouting under-borehole long-spiral sandy aquifer wall protection bored cast-in-situ pile |
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