钻孔灌注桩后注浆施工技术探讨

On post-grouting construction technology of cast-in-place bored pile

阐述了钻孔灌注桩后注浆技术适用的地质条件及加固机理,对水灰比、注浆量及闭盘压力等注浆参数的设定作了论述,介绍了后注浆技术的工艺流程及施工要点,并探讨了注浆施工中出现的问题及相应措施,从而推广该技术的应用。

The applied geological conditions and working mechanism of Vast-grouting technology of cast-in-place bored pile are elaborated. In view of the setting of water cement ratio, grout amount, closing pressure and other grouting parameters discussion is made. In addition, technological process and key points for construction are introduced as well as countermeasures to deal with the problems encountered in construction process, which provide good references for the application of this technology.