后压浆灌注桩止水功能的工法创新应用与成败分析

摘要

Facing practical requirement of engineering the traditional construction method of post pressure grouting pile is modified to probe to satisfy water prevention as well as soil sup-porting. For silty clay with fine sand post grouting cement meth-od is altered to prevent water permeation. In the same site two engineerings were carried out successively and achieved success as a whole meanwhile some problems revealed in this method were worth improving further.%以工法改进为探索，以工程实例为依托，在后压浆钻孔灌注桩工法基础上，结合土层具体情况对压浆管和压浆过程作设计改进，通过解决压浆管的设置与注浆等问题，将压浆的主要作用集中于防止地下水的渗透，并在同一场地先后实施了两项工程，在取得了基本成功的结果下也暴露出该工法的某些问题，值得工程界进一步改进与完善。