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系統識別號 U0026-0107201914134100
論文名稱(中文) 結合地質模型進行三維離散元之崩塌運移數值模擬-以太麻里溪、四川新磨村、檨仔寮為例
論文名稱(英文) Combination of three-dimensional discrete element method and geological model to simulate the migration of Taimali landslide, Xinmo landslide and Shezailiao landslide-prone slope
校院名稱 成功大學
系所名稱(中) 地球科學系
系所名稱(英) Department of Earth Sciences
學年度 107
學期 2
出版年 108
研究生(中文) 黃淳銘
研究生(英文) Chun-Ming Huang
電子信箱 C44026113@gmail.com
學號 L46061036
學位類別 碩士
語文別 中文
論文頁數 93頁
口試委員 指導教授-林冠瑋
口試委員-洪瀞
口試委員-陳麒文
中文關鍵字 崩塌  潛在崩塌  離散元素法  地質模型  數值模擬 
英文關鍵字 Landslide  landslide-prone slope  Discrete element method  Geological model  Numerical simulation 
學科別分類
中文摘要 台灣位處於板塊活動活躍及副熱帶季風氣候區,受地震及降雨兩大因素影響,常發生邊坡地表位移,甚至崩塌災害,若能於災害發生前了解其可能破壞機制及運移情況,或許能提前進行預防及整治。雖然崩塌事件發生後可透過現地觀察推估可能的崩塌過程,但並不能明確推演出崩塌塊體在不同時間階段的位置、速度,以及崩塌塊體間的相互影響關係。本研究利用三維離散元素模擬工具Particle Flow Code 3D (PFC3D),結合現地調查建置之地質模型,以太麻里溪包盛社、四川新磨村崩塌為例,探討已發生崩塌的塊體運移情況,並與真實狀況進行比較,以提升模擬結果的可信度,接著應用於檨仔寮潛在邊坡上,嘗試推論其從過去到未來的變形演育情況。
太麻里溪崩塌模擬結果發現,以摩擦係數為0.07時能有最佳堆積、速度分布結果。四川新磨村崩塌的模擬則參考了震波反演的結果,模擬源頭區、運移帶、舊崩積層三個塊體彼此間的交互影響關係。模擬結果可重現崩塌的過程,從源頭區破壞開始,隨後崩塌塊體剷刮運移帶上的土石材料,導致大量崩塌材料堆積在坡趾處的舊崩積層上,而引發第二階段再次快速向下運動,最終堆積於河道上。嘉義文峰村檨仔寮邊坡的變形模擬則藉由現地調查,將此潛在崩塌邊坡劃分為三個區塊,並進行各類型情境模擬,以及塊體可能的運移狀況。最後將模擬結果與現地狀況進行比對,推測目前潛在崩塌區的發展階段,並推測未來可能的發展情況。
英文摘要 To discuss the failure mechanism and migration of the Taimali landslide, Xinmo landslide and Shezailiao landslide-prone slope, this study combined the three-dimensional discrete element simulation tool, Particle Flow Code 3D (PFC3D), with the geological models of these study sites to simulate the dynamic processes of landsliding. Some simulation results include: (1) The simulation of Taimali landslide shows that the best results of velocity distribution can be obtained when the friction coefficient is 0.07. Due to the difficulty to determine the range of deposition area, many previous studies only considered the sliding block from source area. The study successfully simulate the landslide event with a complex geological model. (2) The simulation of Xinmo landslide can reproduce the dynamic processes of the landslide. The event started from the destruction of source area, and then the source block shoveled the material of transition zone. Subsequently a large amount of landslide material accumulated on the old colluvium, causing the second stage to move down again quickly, eventually stacked on the river. (3) The Shezailiao landslide-prone slope is divided into three blocks, and various types of scenarios are simulated. Finally, the simulation results are compared with current situation, and the development stage of the current potential landslide area is presumed, and thepossible future development is speculated.
論文目次 口試合格證明 I
中文摘要 II
Abstract IV
誌謝 VIII
表目錄 XII
圖目錄 XIII
符號對照 XVII
第一章 緒論 1
1.1 研究動機 1
1.2 研究目的 2
1.3 論文架構 3
第二章 文獻回顧 6
2.1 降雨造成的塊體快速運動 6
2.2 潛在崩塌區範圍、深度劃定 7
2.3 PFC3D案例模擬 11
2.3.1 布唐布那斯溪 12
2.3.2 中國Zhenggang 14
2.3.3 華梵大學所在邊坡 15
第三章 研究方法及案例 19
3.1 Particle flow code (PFC) 19
3.1.1 PFC3D基本介紹 20
3.1.2 PFC3D計算原理 20
3.1.3 接觸點之模型 21
3.1.4 微觀與巨觀參數轉換 27
3.2 研究案例 29
3.2.1 太麻里溪 29
3.2.2 四川新磨村 30
3.2.3 檨仔寮 32
第四章 研究案例模擬 37
4.1太麻里溪 37
4.1.1 材料參數取得 37
4.1.2 模型建立 39
4.1.3 參數敏感度分析及結果驗證 43
4.2 四川新磨村 48
4.2.1 材料參數取得 48
4.2.2 模型建立 50
4.2.3 結合前人崩塌訊號反演結果之模擬 53
4.3 檨仔寮潛在崩塌邊坡 58
4.3.1 材料參數取得 58
4.3.2 模型建立 60
4.3.3 參數敏感度分析 62
4.3.4模擬結果與真實狀況的比對 68
第五章 討論 72
5.1 太麻里溪模擬結果之堆積形貌和真實差異原因探討 72
5.2四川新磨村崩塌情境模擬 74
5.3檨仔寮潛在崩塌邊坡各階段地表變形的演變 81
第六章 結論 84
參考文獻 86
附錄 91
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