The paper introduces the basic principle and applied scopes for the sand-pouring method,researches the selection for the measured sand and calibration,and points out the technical points for the test of roadbed compaction with the sand-pouring method from the selected points, tested frequency,excavation of trial pits,and measurement of water content,so as to improve the accuracy of the test result.%介绍了灌砂法的基本原理及适用范围，对量砂的选择与标定进行了研究，从选点及检测频率、试坑开挖、含水率测定等方面提出了灌砂法检测路基压实度的技术要点，以达到提高测试结果精度的目的。
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