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近几年来,随着岩溶调查研究的深入,岩溶探测技术有了较大的进展。为查明钻孔内的岩溶及裂隙的发育情况,地球物理测井方法虽然在很多方面弥补了岩芯钻探的不足,仍无较为有效的探测手段。对于探测地质体来说,超声波具有可见光不可能具有的穿透物质的本领,而定向发射超声波的换能器在技术上已经成功,所以应用超声扫描来获得钻孔地质剖面的直观图象,进而去探测钻孔内的岩溶、裂隙发育情况越来越被人们所重视。
In recent years, with the deepening of karst investigation and research, karst exploration technology has made great progress. In order to find out the development of karst and fissures in boreholes, although geophysical logging methods have made up for the lack of core drilling in many aspects, there are still no effective means of detection. For detecting geologic bodies, ultrasonic waves have the ability to penetrate matter that is impossible with visible light, and transducers that emit ultrasonic waves directionally have been technically successful. Therefore, ultrasonic scans are used to obtain visual images of borehole geological sections, and in turn The exploration of the karst and fissure development in boreholes has received increasing attention.