长螺旋基础桩在建筑基础领域中占有很大的优势,成桩质量好,成本低、效率高等。随着国内三、四线山区城市的建筑开发,长螺旋入岩施工已成了难点。长螺旋设备无法入岩或入岩速度很慢,造成施工效率低,成本高,给施工的顺利进行带来很大的障碍。文章阐述了长螺旋入岩钻头和相应的施工方法 ,以供参考。 Long spiral foundation pile occupies a great advantage in the field of building foundation, into a pile of good quality, low cost, high efficiency. With the construction of the third and fourth line mountainous cities in China, the construction of long spiral rock has become a difficult point. Long helix equipment can not enter the rock or into the rock is very slow, resulting in low construction efficiency, high cost, to bring the construction of a great obstacle. The article describes the long spiral rock drill bit and the corresponding construction methods for reference.