| 长螺旋钻孔压灌桩嵌岩技术的改进与应用 |
| 投稿时间：2015-09-29 修订日期：2015-11-12 点此下载全文 |
| 引用本文：丁旭亭,苏华,虞利军.长螺旋钻孔压灌桩嵌岩技术的改进与应用[J].钻探工程,2015,42(11):62-65.DING Xu-ting,SU Hua,YU Li-jun. Improvement of Rock Drilling Technology for Long Spiral Bored Grouting Pile and the Application[J]. Drilling Engineering, 2015,42(11):62-65. |
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| 中文摘要:普通长螺旋钻孔压灌桩适用于砂层、砾石层、硬土层及软岩层，不适用于硬度较高的岩石层。经改进钻头，加装加压系统、冷却系统后，长螺旋钻孔压灌桩可用于块石填土层、卵石层及较软—较硬基岩的钻进，拓宽了适用范围。工程实践证明，该嵌岩技术使用效果良好，具有推广价值。 |
| 中文关键词:长螺旋钻孔压灌桩 长螺旋压灌桩机 钻头 加压系统 冷却系统 嵌岩技术 |
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| Improvement of Rock Drilling Technology for Long Spiral Bored Grouting Pile and the Application |
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| Abstract:General long spiral bored grouting pile is suitable for sand layer, gravel layer, hard soil and incompetent bed, but not for those lithosphere with high hardness. By the improvement on bit with pressure system and cooling system installing, the application scope of long spiral bored grouting pile is broadened: it can be used in block filling layer, cobble layer and soft-hard bedrock. The engineering practice proves that this technology is effective with promotion value. |
| keywords:long spiral bored grouting pile long spiral pressure grouting pile machine bit pressure system cooling system rock drilling technology |
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