本研究提出一個基於本體論的動態風險管理架構，目標是透過人流本體與風險本體兩者的識別與比對，從而揭露與管理場域中的動態風險關係。研究提出「BIM圍籬」的概念與實作，整合電腦視覺與數位雙生技術，以提升建築物的動態風險維運管理。BIM 圍籬系統由三個核心部分組成：涵構察覺、數位雙生和風險管理。涵構察覺利用電腦視覺技術，即時識別空間中人流的位置，建立人群點位的動態資料庫。數位雙生則將這些人流數據與BIM模型結合，創建實時的數位雙生模型。最後，風險管理模組在數位雙生平台上劃定風險區域，並根據人流與風險區的碰撞衝突檢測來判斷風險是否發生，從而提供相應的風險警示。本研究通過兩個實驗驗證了所開發的數位雙生平台的風險管理系統-BIM 圍籬。實驗結果表明，在實驗對象保持適當距離的前提下，系統能夠正確記錄實驗對象進入風險區的情況，初步證實了系統具有高度的可靠度。總結來說，本研究不僅提出了基本體的風險管理，更透過實際的系統開發和實驗驗證，展示了其在建築動態風險維運管理上的潛力，為建築維運管理產業的數位轉型提供了一個嶄新的方向。

This research proposes a dynamic risk management framework based on ontology, aiming to reveal and manage the relationship between dynamic risks in the field through the identification and comparison of crowd ontology and risk ontology. The research introduces the concept and implementation of "BIM Fences," integrating computer vision and digital twin technology to enhance the dynamic risk management and maintenance of buildings. The BIM Fence system comprises three core components: context awareness, digital twin, and risk management. Context awareness utilizes computer vision technology to identify the location of crowd flow in real-time, establishing a dynamic database of people’s locations. The digital twin then combines this crowd flow data with the BIM model to create a real-time digital twin model. Finally, the risk management module defines risk zones on the digital twin platform and determines whether risks occur based on collision detection between crowd flow and risk zones, thereby providing corresponding risk warnings. This research validated the effectiveness of the BIM Fence The experimental results showed that the system could accurately record the entry of experimental subjects into the risk zones, provided that the experimental subjects maintained an appropriate distance, initially demonstrating the high reliability of the system. In summary, this research not only proposes the concept of BIM Fence but also demonstrates its potential in dynamic risk management of building operation through actual system development and experimental verification, providing a new direction for the digital transformation of the building operation industry.