基于全景影像的引水隧洞结构缝检测方法及应用  

Application of detection method of structural seams for water conveyance tunnel based on panoramic image

作　　者：崔金良 张俊文 万雷 李志鹏 CUI Jinliang;ZHANG Junwen;WAN Lei;LI Zhipeng(Henan Branch,Central Route Construction Management Bureau of South to North Water Transfer Project,Zhengzhou 450046,China;Lushui Hydro-complex Administration of Changjiang Water Resources Commission,Xianning 437300,China;Changjiang Space Information Technology Co.,Ltd.,Wuhan 430010,China)

机构地区：[1]南水北调中线干线工程建设管理局河南分局,河南郑州450046 [2]长江水利委员会陆水试验枢纽管理局,湖北咸宁437300 [3]长江空间信息技术工程有限公司(武汉),湖北武汉430010

出　　处：《人民长江》2022年第7期135-141,共7页Yangtze River

基　　金：长江勘测规划设计研究有限责任公司自主创新项目(CX2020Z31,CX2019Z57)。

摘　　要：为了克服传统大型引水隧洞结构缝检测方法耗费人工量大、操作复杂、效率低、难度大、安全风险高等缺点,创新性地提出了一种基于全景影像的引水隧洞结构缝快速检测方法。该方法集成了一种结构缝检测专用设备,可以按照一定的规律获取结构缝的有序高清影像,对影像进行畸变纠正、拼接等处理,并通过数学关系对结构缝成像合图进行绝对尺度校准,进而可提取结构缝边界。通过参数化表示和统计、分析,得到结构缝的缝宽和轴线偏移信息,并采用图表进行直观地表达。将该方法应用于南水北调中线穿黄隧洞结构缝的检修中,并与实测数据进行比对,验证了其满足1 mm/cm的量测精度要求。该方法极大提高了检测效率,降低了检测成本和安全风险,可为引水隧洞结构缝精准检修、维护提供参考。In order to solve the problems of the high labor cost, complicated operation, low efficiency and high safety risk in traditional seams detection methods for water conveyance tunnels, we propose a rapid detection method for structural seams based on panoramic images.Firstly, we integrate special equipment for structural seams detection, which can obtain ordered high-resolution images of structural seams according to certain rules.Then we carry out distortion correction and mosaic for the images.Further we perform absolute scale calibration on the synthetic image of structural seams through mathematical relations so as to extract the boundaries of the structural seams.Through parameterized representation, statistics and analysis, the seam widths and axial deviation information are obtained and expressed by graphs.This method is applied to the maintenance of structural seams in Yellow River-crossing tunnel in South-to-North Water Diversion Project.We compare the results of new method with the measured one, which shows that accuracy of the method could reach 1 mm/cm.This method greatly improves the detection efficiency, reduces the detection cost and safety risks, which provides a new scientific method for the detection of structural seams in water conveyance tunnels.

关 键 词：引水隧洞 结构缝快速检测 全景影像 空间信息 穿黄隧洞 南水北调中线工程 

分 类 号：TV554[水利工程—水利水电工程]