１前言后压浆钻孔灌注桩就是在钻孔灌注桩的钢筋笼上预设压浆管，待成桩后向桩侧、桩底高压灌注水泥浆液，以改良桩侧、桩底土体的物理、力学指标，改善桩与桩侧、桩底土的受力条件，提高单桩承载力。通过对管道局廊坊基地九区后压浆钻孔灌注桩实验桩的检测表明，非压浆桩（桩 1 Introduction Post-grouting bored piles are pre-grouting bored piles on the reinforced cage, to be piled into the pile side, the bottom of the high pressure grouting fluid slurry to improve the side of the pile, the soil at the bottom of the pile Physical and mechanical indicators to improve the pile and pile side, the bottom of soil stress conditions, improve the single pile bearing capacity. The test of post-grouting bored piles in the nine districts of Langfang Base of Pipeline Bureau shows that the non-grouting piles (pile