English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 64745/64745 (100%)
造訪人次 : 20439891      線上人數 : 294
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋


    請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/5637


    題名: 以岩體分類探討非構造性控制破壞之岩坡最陡安全開挖坡度;Stability of rock slope with non-structural control failures
    作者: 李春明;Chun-Ming Lee
    貢獻者: 應用地質研究所
    關鍵詞: 邊坡反應曲線;邊坡穩定分析;地質強度指標;岩體分類法;最陡安全開挖坡度;岩石邊坡;slope performance curves;slope stability;Geological Strength Index;rock mass classification;maximum excavation angle;rock slope
    日期: 2004-01-07
    上傳時間: 2009-09-22 09:58:38 (UTC+8)
    出版者: 國立中央大學圖書館
    摘要: 本論文藉以岩體分類的觀點,探討非構造性控制破壞下岩坡之最陡安全開挖坡度。基於地質強度指標GSI,結合非線性之Hoek and Brown (2002)破壞準則以及線性之摩爾-庫倫破壞準則,以迴歸獲得不同坡高應力範圍下之岩體強度參數c'與 ;再利用Janbu邊坡穩定分析設計圖,反推不同坡高與不同岩體強度下,安全係數(FS)為1時的岩坡開挖坡度,並將其計算結果展繪為邊坡反應曲線Slope performance curve。 研究結果顯示:(1)不同坡高所造成之應力範圍,會直接影響岩體強度參數的評估,因此在評估岩坡穩定坡度時所使用之強度參數,應將坡高或應力條件納入考慮;(2)岩坡的岩石單壓強度,為非構造控制破壞之最陡安全開挖坡度中較為重要影響因素,相對而言,岩性係數顯得不那麼敏感;(3)岩坡之開挖施工擾動會直接影響岩體強度,尤其當岩體構造GSI評值不大時,岩體強度更會明顯降低;(4)依不同岩石強度與岩性展繪之GSI Slope performance curve可用來合理且簡易的評估岩坡最陡安全開挖坡度。 Stability of rock slope with non-structural control failures is studied in this thesis. Based on Non-linear Hoek-Brown failure criterion (2002), cohesion c' and frictional angle of the rock slope for different height (different stress range) are determined in conjunction with Geological Strength Index GSI. The maximum excavation angle (FS=1) with non-structural control failures of rock slope for different height can be evaluated using Janbu slope-stability chart. Consequently, GSI-based slope performance curves are constructed. The important results are summarized as follows: (1) Rock mass strength parameters are functions of stress range. Therefore, the height of rock slope should be taken into consideration for evaluating the maximum excavation angle. (2) Unconfined compressive strength of intact rock is a primary factor for evaluation of the maximum excavation angle with non-structural control failures. Relatively, the effect of material constant on the maximum excavation angle is minor. (3) Disturbance of excavation reduces the rock mass strength. The lower the GSI is the effect is more predominant. (4) GSI-based slope performance curves, taking the intact rock strength and material constants into consideration, are useful for evaluation the maximum excavation angle of rock slope.
    顯示於類別:[應用地質研究所] 博碩士論文

    文件中的檔案:

    檔案 大小格式瀏覽次數
    0KbUnknown1292檢視/開啟


    在NCUIR中所有的資料項目都受到原著作權保護.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回饋  - 隱私權政策聲明