| 研究生: |
葉書泓 Yeh, Shu-Hung |
|---|---|
| 論文名稱: |
利用壓密出泥試驗決定水庫低含水量淤泥開採性質之研究 A Study of Assessing the Excavating Characteristics of Low Water Content Reservior Sludge Based on the Sludge Outflow Experiment |
| 指導教授: |
王建力
Wang, Jian-Li |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 資源工程學系 Department of Resources Engineering |
| 論文出版年: | 2010 |
| 畢業學年度: | 98 |
| 語文別: | 中文 |
| 論文頁數: | 85 |
| 中文關鍵詞: | 石門水庫 、淤泥 、採礦 、出泥試驗 、含水量 、壓密 |
| 外文關鍵詞: | Shihmen Reservoir, sludge, mining, sludge outflow experiment, water content, consolidation |
| 相關次數: | 點閱:99 下載:1 |
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石門水庫之淤積狀況嚴重,造成蓄水量減少並可能發生日後潰堤之風險。因此,如何解決石門水庫淤積之問題,為當前最大之挑戰。
本文針對使用採礦方式開挖石門水庫淤泥之構想,進行水庫淤泥之流動性評估。探討實驗室尺度中,淤泥在不同含水量、壓力與開孔直徑下主動出泥之可行性。採用土壤單向壓密試驗儀,並經過自行設計與改良的出泥試驗,以了解石門水庫淤泥受壓情況下之流動特性。
試驗結果顯示,淤泥僅能在壓密時間為10分鐘的情況下主動流出。而以含水量觀察其流出情形, 能否出泥的含水量門檻值約為25%,而正常出泥與瞬間出泥的含水量門檻值約為45%。
The excessive deposition of sedimentation of Shihmen Reservoir has resulted in reduced water storage capacity. Therefore, how to solve the problem of Shihmen Reservoir deposition, is a challenge for the geotechnical engineers.
Based on using the concept of the mining method to excavate Shihmen Reservoir sludge, this study carried out a series of experiments to assess the fluidity of reservoir sludge. The feasibility of active outflow in the scale of the laboratory, the sludge in different water content, pressure and opening diameter has been investigated. Based on the one-dimensional soil consolidation test, this study designs a sludge outflow experiment to understand the flow characteristics of Shihmen Reservoir sludge in various conditions.
The experimental results showed that the sludge could active outflow only when the consolidation time is 10 minutes. It is also concluded that the minimum water content that the sludge could active outflow is about 25%, and the water content that the outflow condition of the sludge transferring from normal condition tnto unstable one is about 45%.
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