灌注水下混凝土常见导管事故的防治

Prevention and cure of common tube accident in pouring underwater concrete

分析了钻孔灌注桩施工时 ,应用导管灌注水下混凝土常见的卡管、导管拔断和无混凝土包管等事故的原因 ,并针对这些原因 ,提出卡管的补救措施 ,导管拔断和无混凝土包管的处理方法以及预防事故产生的施工措施 ,并指出混凝土的配制与灌注时应注意的事项 ,达到减少灌注水下混凝土常见事故发生的目的。

When construction with drilling bored concrete pile , causes of seized tube, pulled out tube and no concrete enclosing tube are analyzed. Pointing at t hese causes, remedial measure of seized tube, the processing methods of pulled o ut and break tube and no concrete enclosing tube, construction measures on preca ution accident are put forward. Matters needing attention when concrete being ma de up and bored are pointed out, the objective of reduction common accident whil e pouring underwater concrete.