Multi-frequency ultrasonic underground cavity scanning detection technology in borehole

doi:10.1016/j.measurement.2020.107889

	Multi-frequency ultrasonic underground cavity scanning detection technology in borehole
	Wang, Jinchao; Wang, Chuanying; Han, Zengqiang
刊名	MEASUREMENT
	2020-09-01
卷号	161 页码:12
关键词	Multi-frequency ultrasound Underground cavity Ultrasonic scanning Frequency response Contour shape
ISSN号	0263-2241
DOI	10.1016/j.measurement.2020.107889
英文摘要	In order to solve the current situation that underground cavity contour detection is difficult, this paper proposes a multi-frequency ultrasonic cavity scanning detection technology in borehole. It is a scanning technology that uses a combination of multiple frequency ultrasonic probes to obtain more effective detection information and achieve the cavity contour accurate measurement, which provides an important reference for the underground cavity detection. Firstly, in view of the spatial arrangement of multiple ultrasonic transducers, the corresponding structural design scheme is proposed to realize the structural design of multi-frequency ultrasonic scanning system. Then, in order to better adapt to the detection requirements, through the simulation of ultrasonic sound field, the ultrasonic beam characteristics are analyzed. The frequency response factor concept of multi-frequency ultrasonic is proposed, and the weight distinction of different frequency acoustic signals and the evaluation of multi-frequency ultrasonic response weight are realized. Finally, combined with the actual detection environment, the influence of scanning time interval and scanning speed on the detection results is analyzed. The parameter matching relationship between mechanical scanning and space detection target is constructed, and the parameters of scanning detection system are determined. In addition, in order to verify the feasibility and accuracy of the technology proposed in this paper, based on the principle of multi-frequency ultrasonic detection and the design of scanning detection system, the corresponding multi-frequency ultrasonic scanning detection system is independently developed. The detection capability and reliability of the system are tested and analyzed by using the developed detection system. The error of the detection result is small, which verifies the feasibility and accuracy of the multi-frequency ultrasonic underground cavity scanning detection technology proposed in this paper. (C) 2020 Elsevier Ltd. All rights reserved.
资助项目	State Key Program of National Natural Science of China[41731284] ; National Natural Science Foundation for the Youth of China[41902294]
WOS研究方向	Engineering ; Instruments & Instrumentation
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000535957400022
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/24175]
专题	中科院武汉岩土力学所
通讯作者	Wang, Jinchao
作者单位	Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jinchao,Wang, Chuanying,Han, Zengqiang. Multi-frequency ultrasonic underground cavity scanning detection technology in borehole[J]. MEASUREMENT,2020,161:12.
APA	Wang, Jinchao,Wang, Chuanying,&Han, Zengqiang.(2020).Multi-frequency ultrasonic underground cavity scanning detection technology in borehole.MEASUREMENT,161,12.
MLA	Wang, Jinchao,et al."Multi-frequency ultrasonic underground cavity scanning detection technology in borehole".MEASUREMENT 161(2020):12.