浅谈混凝土灌注桩施工中堵管的原因和预防

指出在钻孔桩施工中导管堵塞是引起断桩的主要原因，从混凝土的和易性、骨料粒径和级配、导管和隔水设施及泥浆比重等方面对灌注桩施工中堵塞导管的原因作了分析，并提出相应的预防措施，从而确保工程质量。

Discussion on the reason and precaution of pipe blockage in concrete grouting pile construction

It pointed out that the conduit jam in bored pile construction was the main reason creating broken pile,the reasons of blocking pipe in grouting pile construction were analyzed from workability of concrete,the particle diameter and gradation of aggregate,pile and isolating water facilities and specific gravity of slurry,and the corresponding precaution measurements were provided,so as to ensure engineering quality.