| 旋挖钻进技术在澳门地下重型停车场工程中的应用 |
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| 引用本文： | 孙垦耘.旋挖钻进技术在澳门地下重型停车场工程中的应用[J].中国煤田地质,2007,19(1):74-75. |
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| 作者姓名： | 孙垦耘 |
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| 作者单位： | 广东煤炭地质局,广州510170 |
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| 摘 要： | 澳门地下重型停车场工程地段属人工堆填整平的山丘地形，地层结构从上而下为杂填土、冲积沙层、风化程度不同花岗岩带，使用旋挖钻机进行钻孔灌注桩施工时，因地层岩性因素，易出现漏浆、孔壁坍塌及埋钻事故。通过选用适岩性不同的钻头、合理埋设钢护筒位置、调配性能适宜的泥浆及规范混泥土灌注流程，保证了旋挖钻机在成孔过程中孔壁的稳定性，解决了塌孔埋钻问题，提高了钻孔灌注桩的成孔效率。
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| 关 键 词： | 钻进技术 旋挖钻机 钻头 钢护筒 泥浆护壁 灌注桩 澳门 |
| 文章编号： | 1004-9177（2007）01-0074-02 |
| 收稿时间： | 2006-11-20 |
| 修稿时间： | 2006年11月20 |
Application of Hydraulic Piling Technique in Underground Heavy-Duty Vehicle Parking Lot Engineering in Macao |
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| Sun Kenyun.Application of Hydraulic Piling Technique in Underground Heavy-Duty Vehicle Parking Lot Engineering in Macao[J].Coal Geology of China,2007,19(1):74-75. |
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| Authors: | Sun Kenyun |
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| Institution: | Guangdong Bureau of Coal Geological Exploration, Guangzhou, Guangdong 510170 |
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| Abstract: | Macao heavy-duty vehicle parking lot site is located on an artificial leveled broken terrain; strata from top to bottom are mixed earth filling, alluvial sand, different weathered granite. During cast-in-place piling by the use of hydraulic piling rig was going on, because of strata lithology, accidents of mud loss, wall collapse and drilling tool burying are easy to happen. Through select of suitable bit for different strata, rationally laying steel pile casing, prepare suitable performance mud and procedure coding of cast-in-place piling, ensure hydraulic piling rig stability during drilling, thus accident hazards avoided and cast-in-place piling completion efficiency raised. |
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| Keywords: | drilling technique hydraulic piling rig drilling bit steel pile casing mud protection of wall cast-in-place pile Macao |
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