广州洲头咀沉管隧道工程之水下检测研究

Research on Underwater Detection of Joint of Submerged Tubes in Guangzhou Zhoutouzui Immersed Tunnel Engineering

沉管隧道施工的整个施工工艺中,管段的沉放相接是极其重要的一环,因此对其水下检测必不可少。应用卫星GPS定位技术、声呐水下扫测技术、水下探摸和录像及其分析,对广州洲头咀沉管隧道工程的管段在沉放对接前、对接后及锁定回填后的管段状态和水下地形进行了分项检测.精准及有效的反映了施工工况并做出对应的归纳和分析。

The underwater connection of immersed elements is the key process of immersed tunnel construction, their underwater real-time detections are quite important. By using GPS technology, underwater sonar technology, diver exploring, underwater TV video and their comprehensive analysis, underwater construction quality detections of immersed elements in Guangzhou Zhoutouzui tunnel project have been made for different conditions （such as before the docking, after sinking and after fixed backfill）. Then the paper shows the status of construction and makes corresponding evaluation about the construction effect.