以攝影測量進行隧道雷射剖面測量之定性定量分析

Abstract

隧道襯砌剖面現況為隧道結構體安全性之重要指標。首先必須透過量測得到剖面表面之幾何資料，再進一步分析隧道結構變化，但因隧道場景之特殊性，剖面測量在施測工具選擇、時效以及成果品質要求上受限頗多。本研究主要針對原有的施測方法進行改良，透過加入距離及連結資訊，使量測成果穩定並減少現地量測時間。其次建構以攝影測量搭配雷射剖面完成襯砌量測的場景觀測量模擬及解算平台，此平台能針對施測場景進行觀測網形設計、解算及施測時間預估，據此達至襯砌三維定位品質需求及確實掌握隧道內施測時程。

The status of tunnel lining would indicate whether or not the tunnels under investigation are considered unsafe. Due to the diverse lining patterns and the scene situations, measuring tunnel linings faces rigorous restrictions in instrument selection, time efficiency and quality satisfaction. The focus on this study is to design a simulator that simulates lining data and acquisition through photogrammetric imaging with laser profile and perform as well as quantify profile positioning by adjustment approach. The simulator would provide photogrammetric network analysis, bundle adjustment and run time estimate so that a fulfilled quality and efficient operation flow can be planned and assured before an actual in-site surveying.