桩底后注浆技术及其应用

Bored Pile Bottom Post grouting Technique and Its Uses

通过对后注浆灌注桩与普通灌注桩、扩底灌注桩进行比较，简述了后注浆灌注桩的优点，并对各类地层的后注浆原理及注浆压力进行详细的分析，介绍了桩底后注浆设备及工艺，最后通过工程实例说明桩底后注浆技术的经济效果。

The comparison of post grouted bored piles with conventional bored and underreamed piles shows the advantage of post grouted piles over the latter. The detailed analysis is made of post grouting principles and injection pressures used in various formations. The equipment and process for bored pile bottom post grouting is introduced with its economic benefits illustrated in the light of field cases.