Application of Long-Range Cross-Hole Acoustic Wave Detection Technology in Geotechnical Engineering Detection: Case Studies of Tunnel-Surrounding Rock, Foundation and Subgrade

Lihu Dong, Jundong Chen, Danqing Song (), Chengwen Wang, Xiaoli Liu, Mengxin Liu and Enzhi Wang
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Lihu Dong: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China
Jundong Chen: China Railway Chengdu Research Institute, Science and Technology Co., Ltd., Chengdu 610066, China
Danqing Song: School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China
Chengwen Wang: State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
Xiaoli Liu: State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
Mengxin Liu: School of Civil Engineering, Northeast Forestry University, Harbin 150006, China
Enzhi Wang: State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China

Sustainability, 2022, vol. 14, issue 24, 1-21

Abstract: The adverse geological conditions of soil cave, karst cave and goaf in deep foundation directly affect the safety and economy of geotechnical engineering construction. It is a difficult problem in geotechnical engineering detection to detect the distribution of bad geological conditions efficiently and accurately. Aiming at the problems of short penetrating distance and low resolution of cross-hole acoustic wave detection in rock-soil mass, based on the characteristics of acoustic wave propagation in rock and soil layers and comprehensively utilizing the spark source and data acquisition device, a long-distance cross-hole acoustic wave detection technology is proposed. According to the indoor concrete model test and field tests of geotechnical engineering, the applicability of the long-distance cross-hole acoustic wave detection technology in the detection of geotechnical structure and adverse geological phenomena under complex geological conditions is verified. The results show that acoustic wave CT imaging can accurately detect the cavities in the indoor concrete model test. In addition, the field tests of the grouting effect of tunnel-surrounding rock, high-rise building foundation and subgrade further verify the rapidity, accuracy and intuitiveness of the long-distance cross-hole acoustic wave detection technology. This work provides a reference for eliminating the potential safety problems caused by adverse geological conditions and similar geotechnical engineering investigation.

Keywords: cross-hole acoustic wave; geotechnical engineering; field test; tunnel grouting; deep foundation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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