旋挖钻搓管全护筒跟进法在岩溶地区桩基施工中的应用与研究
Application and Research of the Full Casing Follow-Up Method with Rotary Drilling Rig and Pipe Ramming in the Construction of Pile Foundations in Karst Areas

本文以四川省某大型高速公路项目为依托，深入研究学习了岩溶地区桩基施工难题。详细阐述了常见岩溶形态及其对钻孔桩施工的危害，重点介绍旋挖钻搓管全护筒跟进法的施工要点、技术关键点、施工中遇到的问题及应对措施。该方法在该项目的岩溶桩基施工中成效显著，按时完成任务，保障桩基质量，培养技术人才，为岩溶地区桩基施工积累宝贵经验，对类似工程具有重要参考价值。
This article is based on a large-scale expressway project in Sichuan Province, and conducts an in-depth study and learning of the construction problems of pile foundations in karst areas. It elaborates in detail on the common karst forms and their hazards to the construction of bored piles, and focuses on introducing the construction key points, technical key points, problems encountered during construction, and corresponding countermeasures of the full casing follow-up method using a rotary drilling rig and pipe ramming. This method has achieved remarkable results in the construction of karst pile foundations of this project. It has completed the task on time, ensured the quality of the pile foundations, cultivated technical talents, and accumulated valuable experience for the construction of pile foundations in karst areas, which has important reference value for similar projects.