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A platform for research: civil engineering, architecture and urbanism
Multi-shaft rotary jet-grouting drilling tool and synchronous construction method of plurality of rotary jet-grouting piles
The invention discloses a multi-shaft rotary jet-grouting drilling tool and a synchronous construction method of a plurality of rotary jet-grouting piles. The multi-shaft rotary jet-grouting drillingtool comprises two or more than two drill rods and rotary jet-grouting drill bits, wherein one rotary jet-grouting drill bit is arranged on each drill rod; the arrangement space of the drill rods is greater than 5 times of the diameter of the drill rods; the diameter of the drill rods is not smaller than 80 mm; each drill bit is provided with a rotating shaft with a hollow inner cavity and a cutting wing; a spray nozzle is arranged on each drill bit, and comprises air spraying openings and a slurry spraying opening; the air spraying openings are distributed in a way of surrounding the slurry spraying opening; each drill rod is a hollow drill rod; a conveying pipeline for compressed air and high-pressure slurry is arranged in the middle of each drill rod; and the cross section of the plurality of rotary jet-grouting piles for synchronous construction is in a circular or fan shape. The multi-shaft rotary jet-grouting drilling tool and the synchronous construction method provided by the invention have the advantages that the social benefits of safe and reliable construction quality are realized; meanwhile, the manufacturing cost can be reduced; the construction period can be shortened; and great economic values are realized.
本发明公开了一种多轴旋喷钻具及多根旋喷桩同步施工方法，多轴旋喷钻具包含两根或两根以上的钻杆和旋喷钻头，每根钻杆上配置一只旋喷钻头；钻杆布置的间距大于5倍的钻杆直径，钻杆的直径不小于80mm；钻头具有中空内腔的旋转轴和切削翼；钻头上设置有喷嘴，喷嘴包括喷气口和喷浆口；所述喷气口环绕喷浆口布置；钻杆为中空钻杆，中间布置有压缩空气和高压浆液的输送管道；同步施工的多根旋喷桩横截面呈圆形或扇形。该专利具有施工质量安全可靠的社会效益，同时能降低造价和缩短工期，具有重大的经济价值。
Multi-shaft rotary jet-grouting drilling tool and synchronous construction method of plurality of rotary jet-grouting piles
The invention discloses a multi-shaft rotary jet-grouting drilling tool and a synchronous construction method of a plurality of rotary jet-grouting piles. The multi-shaft rotary jet-grouting drillingtool comprises two or more than two drill rods and rotary jet-grouting drill bits, wherein one rotary jet-grouting drill bit is arranged on each drill rod; the arrangement space of the drill rods is greater than 5 times of the diameter of the drill rods; the diameter of the drill rods is not smaller than 80 mm; each drill bit is provided with a rotating shaft with a hollow inner cavity and a cutting wing; a spray nozzle is arranged on each drill bit, and comprises air spraying openings and a slurry spraying opening; the air spraying openings are distributed in a way of surrounding the slurry spraying opening; each drill rod is a hollow drill rod; a conveying pipeline for compressed air and high-pressure slurry is arranged in the middle of each drill rod; and the cross section of the plurality of rotary jet-grouting piles for synchronous construction is in a circular or fan shape. The multi-shaft rotary jet-grouting drilling tool and the synchronous construction method provided by the invention have the advantages that the social benefits of safe and reliable construction quality are realized; meanwhile, the manufacturing cost can be reduced; the construction period can be shortened; and great economic values are realized.
本发明公开了一种多轴旋喷钻具及多根旋喷桩同步施工方法，多轴旋喷钻具包含两根或两根以上的钻杆和旋喷钻头，每根钻杆上配置一只旋喷钻头；钻杆布置的间距大于5倍的钻杆直径，钻杆的直径不小于80mm；钻头具有中空内腔的旋转轴和切削翼；钻头上设置有喷嘴，喷嘴包括喷气口和喷浆口；所述喷气口环绕喷浆口布置；钻杆为中空钻杆，中间布置有压缩空气和高压浆液的输送管道；同步施工的多根旋喷桩横截面呈圆形或扇形。该专利具有施工质量安全可靠的社会效益，同时能降低造价和缩短工期，具有重大的经济价值。
Multi-shaft rotary jet-grouting drilling tool and synchronous construction method of plurality of rotary jet-grouting piles
一种多轴旋喷钻具及多根旋喷桩同步施工方法
LIU FEIRAN (author) / ZHANG YUE (author)
2020-06-19
Patent
Electronic Resource
Chinese
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