Based on a detailed analysis of several main factors in the ultrasonic testing of non-equal diameter drilling hole, this paper puts forward some relevant improving measures. From a large number of successful engineering examples, it is believed that the utilization of ultrasonic reflecting technique is an absolutely necessary means for ensuring the hole quality of the non-equal diameter drilling pile.
韩亮. 非等截面桩超声波成孔质量检测[J]. 物探与化探, 2005, 29(2): 185-188.
Han Liang. THE ULTRASONIC TESTING OF THE HOLE QUALITY OF THE NON-EQUAL DIAMETER DRILLING PILE. Geophysical and Geochemical Exploration, 2005, 29(2): 185-188.