Taking the Xi’an Yongli international financial center project as an example,this paper analyzed the geological conditions of engineer-ing site,elaborated in detail the project used the reverse circulation drill hole slurry post grouting process,through the practice pointed out:the engineering application of super long bored pile to improve the bearing capacity of single pile,obtained good construction effect.%以西安永利国际金融中心项目为例，分析了工程场地的地质条件，对工程采用的反循环钻机成孔泥浆护壁后压浆工艺进行了详细阐述，经实践指出：该工程应用超长灌注桩提高了单桩承载力，取得了良好的施工效果。
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