粉喷桩现场测试随机选点的方法是按数理统计原理 ,根据样本取得的质量数据来推测、判断总体质量 ,在粉喷桩施工现场测定时 ,为采取代表性数据而决定测点位置的方法。1　仪具及材料①钢尺 ,皮尺、毛刷、粉笔等。②硬纸片 :编号从 1～ 2 8共 2 8块 ,每块 2 5ｃｍ× 2 5ｃｍ ,装 Powder injection pile site test random selection method is based on mathematical statistics principle, according to the quality data obtained from the sample to speculate to determine the overall quality, measured at the site of the powder injection pile, in order to take representative data to determine the location of the measurement method . 1 instruments and materials ① steel ruler, tape measure, brush, chalk and so on. ② hard paper: numbered from 1 to 2 8 a total of 28, each 25cm × 25cm, loaded