基于Photogrammetry的非开挖施工地表变形检测技术研究  

Photogrammetry Technology to Measuring Ground Movements in Trenchless Constructions

作　　者：孙平贺[1,2] 乌效鸣[1] 

机构地区：[1]中国地质大学（武汉）工程学院,武汉430074 [2]Ira A Fulton School of Engineering, ,Arizona StateUniversity, AZ 85282

出　　处：《非开挖技术》2010年第1期120-126,共7页China Trenchless Technology

基　　金：本论文得到以下项目的资助：国家留学基金委公派资助项目（20093012）和中国地质大学（武汉）研究生学术探索与创新基金资助项目（CUGYJS0721）资助计划.

摘　　要：非开挖施工过程中由于往往受到埋深的限制，导致上部土体有效应力降低，进而产生地表变形，变形过大还会引起地表既有建筑受到破坏，所以量化检测其变形程度在地下施工中尤为重要。本文主要讨论了采用Photogrammetry技术检测非开挖施工过程中地表变形的主要方法和应用情况。Photogrammetry技术是一种非接触式的变形检测技术，主要通过影像手段获取目标点的三维变形大小。该方法需要从空间多角度对目标点进行摄影测量，获取连续的三维影像信息，通过Photogrammetry软件进行现场目标点重现，进而获取三维可视目标点坐标值。本文通过现场的检测，获取了地表变形的数据，提出了检测的方法，并对数据处理过程中检测精度提出了探讨。Trenchless construction is limited by the depth and the soil depressed. So ground movement is a concern due to they can cau ground movement always occurs due to the se damage to surface structures and buried utilities. This paper discusses the application of photogrammetric technology to monitor ground movements during the process of trenchless constructions. Photograrnmetry is a remote technology in which the 3D properties of objects andsurface can be determined from images. Measurements are determined different photographs taken from different positions and the targets shouldn＇t be moved during the measurements. The software can determine the position of these targets in 3D space. This paper provides an overview of photogrammetric technology, its application to underground projects, results and analysis of data gathered from measurement. In this paper, the author also discusses the accuracy associated different origin positions.

关 键 词：PHOTOGRAMMETRY 非开挖 地表变形 三维检测 

分 类 号：TP319.41[自动化与计算机技术—计算机软件与理论]