旋挖钻机与冲击钻机组合在嵌岩桩施工中的应用

Application of Rotary Drilling Rig and Percussive Drill Combination in Rock-socket Pile Construction

摘要:

旋挖钻机施工工艺和正循环冲击钻机施工工艺相结合，充分发挥了旋挖钻机施工土层速度快和正循环冲击钻机施工岩层速度快的优点，从而打破嵌岩桩施工的传统工艺，为大口径嵌岩桩施工提供经验和技术参考。通过镇江市体育会展中心体育场桩基工程采用旋挖钻机施工工艺和正循环冲击钻机组合成孔工艺的成功实例，介绍了该工艺的施工技术措施及注意要点。

Abstract:

By the construction technology combination of rotary drilling rig and positive circulation percussive drill, these two technologies took full advantages of fast construction speed in soil and rock, and the traditional rock-socket pile construction process was broken. Based on the successful case of hole completion in a pile foundation construction, the paper introduced these two technologies about the technical measures and the attentions.