The paper introduces the successful applications of jet-grouting pile of small angle,jet grouting pile with steel and compound soil nailing wall in the complicated deep pit.

• 通过对青岛某大厦基坑工程设计和施工实例分析,介绍了小角度旋喷桩、加筋旋喷桩、和复合土钉墙三种支护技术在复杂深基坑中的成功应用。