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

被引：5

作者：

Dong, Lihu ^{[1
]}

Chen, Jundong ^{[2
]}

Song, Danqing ^{[3
,4
]}

Wang, Chengwen ^{[5
]}

Liu, Xiaoli ^{[5
]}

Liu, Mengxin ^{[6
]}

Wang, Enzhi ^{[5
]}

机构：

[1] Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Prot, Chengdu 610059, Peoples R China

[2] Sci & Technol Co Ltd, China Railway Chengdu Res Inst, Chengdu 610066, Peoples R China

[3] South China Univ Technol, Sch Civil Engn & Transportat, Guangzhou 510640, Peoples R China

[4] South China Univ Technol, State Key Lab Subtrop Bldg Sci, Guangzhou 510640, Peoples R China

[5] Tsinghua Univ, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China

[6] Northeast Forestry Univ, Sch Civil Engn, Harbin 150006, Peoples R China

来源：

SUSTAINABILITY | 2022年 / 14卷 / 24期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

cross-hole acoustic wave; geotechnical engineering; field test; tunnel grouting; deep foundation; RADAR; MODEL;

D O I：

10.3390/su142416947

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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.

引用

页数：21