长江科学院院报2019，Vol.36Issue(12)：157-163,7.DOI:10.11988/ckyyb.20190850
深水大型沉井内部地形探测方法与实践
Method and Practice of Interior Topographic Detection of Large Caisson in Deep Water
摘要
Abstract
To tackle the difficulty of topographic detection inside caisson during construction monitoring, we put for-ward a detection method for deep-water caisson in closed environment based on analyzing the operation environ-ment. The interior topographic data of caisson was successfully captured by 3D multi-beam real time sonar system in the Oujiang Beikou Bridge. The 3D scene data of caisson’s interior topography were constructed by GIS technolo-gy. Moreover, according to rope survey data and soil excavation scheme, the accuracy of the detected topographic elevation is verified to meet the construction requirements, and the expression of surface morphology is proved cred-ible, which indicate that the proposed method is feasible. By analyzing the detection data we found that different soil excavation zones can be identified by the brightness and shade of the detection data image with the spatial geo-metric morphological characteristics. Visual analysis of soil excavation zones and topographic elevation in the assis-tance of GIS technology will provide auxiliary data for determining the approach, position, and range of soil excava-tion for caisson construction.关键词
沉井/内部地形/探测方法/三维多波束实时声呐系统/GIS技术Key words
caisson/interior terrain/detection method/3D multi-beam real-time sonar system/GIS technique分类
建筑与水利引用本文复制引用
芦云峰,谭德宝,刘勇,占建,周云龙..深水大型沉井内部地形探测方法与实践[J].长江科学院院报,2019,36(12):157-163,7.基金项目
国家重点研发计划课题项目(2018YFC0407804) （2018YFC0407804）
国家自然科学基金重点项目(41331174) （41331174）
