本文通过工程实践,介绍高压注浆在桩身质量缺陷补强中的工作机理,显示其在众多补强措施中,是最方便可行,最经济的手段之一. In this paper, through the engineering practice, the working mechanism of high-pressure grouting in the reinforcement of the pile’s quality defects is introduced, which shows that it is one of the most convenient and feasible and most economical measures in many reinforcing measures.