Application of oceanographic survey technology in underwater detection to convey tunnel inlet

doi:10.13474/j.cnki.11-2246.2023.0029

Bulletin of Surveying and Mapping ›› 2023, Vol. 0 ›› Issue (1): 168-172.doi: 10.13474/j.cnki.11-2246.2023.0029

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Application of oceanographic survey technology in underwater detection to convey tunnel inlet

ZHOU Xiaorong¹, SHEN Yongfang², CHENG Zhuo¹, WANG Zhaowei^2,3, ZHANG Deguan²

1. Guangzhou Downdown Traffic Project Leadrership Group Office, Guangzhou 510000, China;
2. Shanghai Jiaotong University Hike Detection Technology Co., Ltd., Shanghai 200231, China;
3. School of Naval Arichitecture, Ocean and Civil Engineerin, Shanghai Jiaotong University, Shanghai 200240, China

Received:2022-02-17 Revised:2022-11-21 Published:2023-02-08

Abstract

Abstract: In this paper, the underwater detection to convey tunnel inlet after blasting construction is taken as an example, comprehensive using of multiple-beam sonar, underwater robot, color image sonar and other combined acoustic and optical oceanographic survey technology, to obtain high precision, full coverage and high time efficiency measurement data of water inlet. The results show that, the multi-beam sonar scanning reaches the resolution of 1.25 cm, detecting shape and size of the tunnel, plane position, elevation and surrounding rock slope with high precision. Underwater robot could go deep into complex underwater environment, carried the color image sonar scanning could fit the shape of tunnel inlet rock plug section, lock section and slag pit. High-definition underwater video showed the lining quality of tunnel inlet body and accumulation of blocks and stones in the slag pit after blasting. This technology realizes the safe, efficient and full coverage detection of underwater tunnel in complex environment, and could be used as reference for relevant underwater engineering.

Key words: marine survey, underwater detection, convey tunnel, multiple-beam sonar, underwater robot

CLC Number:

P229

ZHOU Xiaorong, SHEN Yongfang, CHENG Zhuo, WANG Zhaowei, ZHANG Deguan. Application of oceanographic survey technology in underwater detection to convey tunnel inlet[J]. Bulletin of Surveying and Mapping, 2023, 0(1): 168-172.

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Application of oceanographic survey technology in underwater detection to convey tunnel inlet

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