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青岛至兰州高速公路陕西境壶口至雷家角高速公路LJ10标5桥挖孔桩施工中应用隧道小导管注浆技术,有效穿过了十几米的流砂层,克服了涌砂塌孔,保质保量地按期完成桩基施工,为桥梁的整体按期完成打下坚实基础。本文介绍了小导管注浆工艺在桥梁挖孔中应用的设计方案、材料要求、施工方法、技术措施及现场质量管理和检测问题。
Qingdao to Lanzhou Expressway from Shaanxi Hukou mouth to Lei Jiajiao highway LJ10 standard 5-hole digging pile construction of the application of small conduit tunneling grouting technology, effective through a dozen meters of sand layer to overcome the sand collapse collapse hole, Paul Quality and quantity of pile foundation construction completed on schedule, laying a solid foundation for the overall completion of the bridge on schedule. In this paper, the design scheme, material requirements, construction methods, technical measures and on-site quality management and testing problems of the small conduit grouting process are introduced.