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Student Number 986204017
Author Wei-lun Yu(余威論)
Author's Email Address weilun74@yahoo.com.tw
Statistics This thesis had been viewed 619 times. Download 392 times.
Department Graduate Institute of Applied Geology
Year 2010
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Velocity-displacement dependent friction coefficient and the kinematics of giant landslide
Date of Defense 2011-06-24
Page Count 116
Keyword
  • friction coefficient
  • giant landslide
  • high velocity rotary-shear test
  • kinematic
  • Abstract To understand the characteristic of friction on sliding surface is one of the most important issues of giant landslide. The Tsaoling landslide occurred in 1999 and the Siaolin landslide occurred in 1999 are major objects in this study. It can be analyzed the movement course of landslide mass relative to the behavior of frictional mechanism when we use the high velocity rotary-shear test to construct the velocity-displacement dependent friction. There are complete records from the neighbor strong-earthquake station of surface vibration at the Tsaoling area and the possible impact signal from landslide mass during the Chi-Chi earthquake. And there are also the rich information that include the process of sliding and impacting from survivor in addition; hence, we collected the original samples near the sliding surface, and used the experimental results made by high velocity rotary-shear frictional testing apparatus to fit and construct the velocity-displacement dependant friction law, then, we introduced the law into the Newmark sliding block analysis to calculate variation of the mass in sliding acceleration, velocity, displacement and the friction coefficient with course. However, to compare with the records near the strong-earthquake station and the critical verifiable data from survivor, and it verify that the results of combining the friction law constructed by high velocity rotary-shear test and the displacement analysis with rigid body can reconstruct the course of sliding. The study demonstrates the friction coefficient of sliding surface obtains from high velocity rotary-shear test has obvious phenomenon of weakening; moreover, the kinetic energy achieves 4.8E+14 J before the impact, and the loss of energy from friction is the half of kinetic energy. In view of the relationship between the slip surface and the mass movement, we analyze the experimental results in Siaolin case; moreover, to observe the microstructure of the samples that have been done after the high velocity rotary-shear test, and trying to survey the mechanism of frictional weakening while the mass of giant landslide was sliding. Get an overview of the results from two cases; it appears that the phenomena of frictional weakening observed from the result of high velocity rotary-shear test can explain the mechanism for movement of the high velocity slip and large displacement clearly.
    Table of Content 摘要i
    ABSTRACTii
    序iv
    目錄v
    圖目錄ix
    表目錄xiii
    一、 緒論1
    1–1 研究動機與目的1
    1–2 研究架構3
    1–3 論文內文概述4
    二、 文獻回顧6
    2–1 研究案例介紹6
    2–1–1 草嶺山崩概述6
    2–1–2 小林村獻肚山山崩概述9
    2–2 Newmark位移分析法12
    2–3 滑動面速度-位移相關摩擦律與山崩運移機制13
    三、 研究方法18
    3–1 研究設備18
    3–1–1 高速旋剪試驗儀18
    3–1–2 實驗試體需求與製備方法19
    3–2 實驗樣本22
    3–2–1 草嶺山崩案例樣本22
    3–2–2 小林村獻肚山山崩案例樣本23
    3–3 樣本基本特性試驗24
    3–3–1 樣本粒徑及物性分析24
    3–3–2 X光粉末繞射分析26
    3–3–3 掃描式電子顯微鏡(SEM)27
    3–4 旋剪試驗之實驗參數28
    四、 研究結果31
    4–1 小林案例31
    4–1–1 樣本礦物組成與物性分析結果31
    4–1–2 速度-位移相關摩擦律迴歸34
    4–1–3 旋剪試驗微觀構造觀察38
    4–2 草嶺案例39
    4–2–1 樣本礦物組成39
    4–2–2 速度-位移相關摩擦試驗結果及摩擦律之建立39
    4–2–3 旋剪試驗微觀構造觀察47
    4–2–4 草嶺山崩滑動塊體運動歷程分析49
    五、 綜合討論58
    5–1 山崩滑動面材料之摩擦特性58
    5–1–1 集集地震之草嶺山崩案例59
    5–1–2 小林獻肚山山崩案例59
    5–1–3 摩擦構造中的剪動微裂隙發展61
    5–2 實驗參數變異性對旋剪試驗結果之影響65
    5–2–1 剪動支持圍岩(host rock)之種類65
    5–2–2 樣品含水量66
    5–2–3 樣品材料68
    5–3 草嶺案例塊體運動特性與滑動面摩擦特性70
    5–3–1 塊體運動能量變化70
    5–3–2 重現部分草嶺案例旋剪試驗70
    六、 結論與建議74
    6–1 結論74
    6–2 建議76
    參考文獻77
    附錄184
    附錄288
    附錄392
    附錄494
    附錄595
    附錄696
    附錄798
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  • Jia-jyun Dong(董家鈞)
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    Date of Submission 2011-07-26

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