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钻孔桩桩底压浆技术是向钻孔灌注桩桩底沉渣和围岩土体内压入一定量水泥浆,使桩底沉渣和桩底一定范围土体孔隙内充满水泥浆液,经物理、化学作用使其强度大幅提高,从而实现单桩竖向承载力的提高。结合高铁钻孔桩桩底压浆施工实践,介绍了2种压浆工艺过程,阐明了提高压浆工效、保证注浆质量关键技术措施实施的重要性。
Bored pile bottom grouting technology is to bored pile bottom sediment and surrounding rock mass into a certain amount of grout, so that a certain range of pile bottom sediment and soil pore filled with cement slurry, the physical, chemical The role of a substantial increase in its strength, so as to achieve vertical pile capacity increase. Combined with the construction practice of high-speed railway bored pile bottom grouting, two kinds of grouting process are introduced, and the importance of improving the grouting efficiency and ensuring the key technical measures of grouting quality is expounded.