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    • 3. 发明授权
    • Method and apparatus for producing a support element in the ground
    • 用于在地面中制造支撑元件的方法和装置
    • US4790689A
    • 1988-12-13
    • US74741
    • 1987-07-17
    • Gunter HennManfred StockerErwin StotzerKonrad FriedrichThomas Bauer
    • Gunter HennManfred StockerErwin StotzerKonrad FriedrichThomas Bauer
    • E21B10/44E02D5/56E02D27/26E02D5/34
    • E02D27/26
    • A method and an apparatus for producing a support element in the ground are described, a hole being sunk through non-stable ground at least down to the load bearing soil. As a result of a wedge-shaped construction of the drill bit the loosened soil is displaced into the adjacent region of the hole and consequently the area round the hole is compacted. The drill has a circular cylindrical core, which is provided with an outlet opening in the vicinity of the drill bit. Preferably tampable material is filled through the core tube, accompanied by the retraction of the drill. The material is simultaneously tamped with the aid of the drill. The invention has the particular advantage that, in cost effective manner, it is possible to use tampable material from the area immediately surrounding the building site and there is no need for expensive, classified filling material. Tubing of the hole is unnecessary through the use of the core tube.
    • 描述了一种用于在地面中制造支撑元件的方法和装置,一个孔至少通过不稳定的地面沉入承载土壤。 作为钻头的楔形构造的结果,松动的土壤被移动到孔的相邻区域中,因此孔周围的区域被压实。 该钻头具有圆形圆柱形芯,该圆筒形芯在钻头附近设置有出口。 优选地,通过芯管填充可潮湿的材料,伴随着钻头的缩回。 该材料在钻头的帮助下同时被夯实。 本发明的特别优点在于,以成本有效的方式,可以使用来自建筑工地周围的区域的防潮材料,并且不需要昂贵的,分类的填充材料。 通过使用芯管不需要管孔。