砂卵石地层长螺旋钻机高效施工技术研究

李权峰; 王雪婷

doi:10.20265/j.cnki.issn.1007-2993.2024-0441

砂卵石地层长螺旋钻机高效施工技术研究

doi: 10.20265/j.cnki.issn.1007-2993.2024-0441

北京京能地质工程有限公司，北京　102300

详细信息

作者简介:
李权峰，男，1990年生，大学本科，工程师，主要从事岩土工程施工、设计、勘察等工作。E–mail：1298235755@qq.com

中图分类号: P634.5
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- 文章访问数: 21
- HTML全文浏览量: 2
- PDF下载量: 15
- 被引次数: 0
出版历程
- 收稿日期: 2024-09-26
- 修回日期: 2024-12-28
- 录用日期: 2025-03-06
- 刊出日期: 2026-02-06

High-efficiency construction technology of long auger drills in sandy gravel strata

Beijing Jingneng Geological Engineering Co., Ltd., Beijing 102300, China

摘要

摘要: 常规长螺旋钻机在砂卵石地层中的施工困难主要表现为卡钻、埋钻和机械磨损严重，为此，对长螺旋钻机钻具和钻进操作进行了系列改进，主要包括：增强长螺旋钻机动力头扭矩，使其能在含有大粒径漂石的砂卵石地层钻进；增加动力头反转功能，使其卡钻或埋钻后能够自主调整；加强钻具（钻杆、合金截齿钻头、变径等）、前后背板（含卡瓦）、护筒和螺丝等相关部件，使其适应施工强度；钻进过程中根据实际情况调整转速、进尺速度等施工参数，达到一次成孔、成桩的效果。通过实际测试，提出5套适用于不同砂卵石地层施工的长螺旋钻机改装配置，供工程应用参考。
- 扭矩加强 /
- 合金截齿钻头 /
- 长螺旋钻机 /
- 砂卵石地层 /
- 一次成孔成桩
Abstract: The construction difficulties of conventional long auger drills in sandy gravel strata are mainly manifested as drill sticking, drill burying and severe mechanical wear. To address these problems, a series of improvements were made to the drilling tools and drilling operations of long auger drills, mainly including the following aspects: enhancing the torque of the power head of long auger drills to enable drilling in sandy gravel strata containing large-sized boulders; adding the reverse rotation function to the power head to allow independent adjustment after drill sticking or burying; strengthening relevant components such as drilling tools (drill pipes, alloy cutting bits, variable diameters, etc.), front and rear backplanes (including slips), casings and screws to make them adapt to the construction intensity; adjusting construction parameters such as rotational speed and footage speed according to actual conditions during drilling to achieve the effect of one-time hole and pile formation. Through practical tests, 5 sets of modified configurations of long auger drills suitable for construction in different sandy gravel strata were proposed, which can provide a reference for engineering applications.
- torque strengthening /
- alloy cutting bit /
- long auger drill /
- sandy gravel strata /
- one-time hole and pile

HTML全文

图 1 扭矩加强版动力头

Figure 1. Torque enhanced power head

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图 2 钻杆1

Figure 2. Drill pipe 1

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图 3 钻杆2

Figure 3. Drill pipe 2

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图 4 加厚版护筒

Figure 4. Thickened protective casing

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图 5 合金截齿钻头

Figure 5. Alloy cutting drill

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表 1 数据对比表

Table 1. Data comparison table

成孔方式	成孔难易程度	工期/天	人机投入	施工用能	施工用水/m³	施工占地/m²	日进尺量/m	砼充盈系数	其他需求
长螺旋成孔	可成孔	45（含机械调整和设计优化时间）	10人+ 2台钻机	300 kw/h（电）		200	180 （90×2）	1.447	无
旋挖成孔	不易成孔，且容易造成严重的机械损伤	45	10人+ 2台钻机	20 L/h（柴油）	160	300	144（72 ×2）	1.15~1.25	膨润土0.9 t/m

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