岩石隧道之開挖面地質與施工快速進化評估技術研究

Advancing Technology for Fast Evaluating Engineering eological Condition in Working Face and Support Performance

李亮瑩(Liang-Ying Li)

指導教授 ： 王泰典

國立臺北科技大學/工程學院/資源工程研究所/碩士(2013年)

摘要

本文提出岩石隧道開挖面地質與開挖支撐快速進化評估技術，提供工程風險的早期預警、施工技術精進以及隧道工藝精緻化的基礎。技術內涵將現代化隧道工程仰賴的地質資料與圍岩變位特性，在圍岩與支撐互制作用進行的階段，轉換為量化的資訊，透過連續的量化記錄，動態地呈現開挖面附近隧道行為。作業程序透過地面光達掃描快速取得開挖面及其附近隧道周壁精密的點雲資料，量化分析開挖面揭露的不連續面參數，提供可能滑落岩楔分析的依據；評估開挖結果、噴凝土厚度、圍岩變位量值與分布等開挖支撐的效能，提供施工調整、甚至是設計修正的量化依據。並以台灣東部變質岩區隧道工程實例，驗證並說明所提技術的應用，藉此採用數值模擬探討隧道開挖面附近力學行為，開挖後變形與異向性影響因素，比對快速評估技術所得資訊與模擬分析結果的異同。

關鍵字

岩石隧道 ； 開挖面地質 ； 開挖岩體行為 ； 效能評估 ； 地面光達

並列摘要

This research proposes an advancing technology to fast evaluate geological conditions and support performance of working face in rock tunnels, providing early warning of engineering disasters, enhancement and refinement of excavation method, and the foundation of exquisite tunnel engineering. By continuously and quantitatively recording the behavior around the working face, we can express the interaction between the surrounding rock and supports dynamically. The procedures contain a scanning of ground LiDAR which quickly obtain precise point cloud data in the vicinity of the working face. The data is analyzed to estimate rock discontinuities parameters and possible key blocks. Moreover, evaluating the performance of excavation, the thickness of shotcrete and the displacements of surrounding rock can provide a basis to adjust the construction method or the design. A tunnel excavated in metamorphic rock in eastern Taiwan is taken to verify and apply the proposed technology.

並列關鍵字

rock tunnel ； geological condition ； excavation behavior ； performance evaluation ； ground LiDAR

參考文獻

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