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頁籤選單縮合
題名 | 夯實泥岩滲透性之研究=A Study of the Permeability of Compacted Mudstone |
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作者 | 蕭達鴻; 金永斌; | 書刊名 | 技術學刊 |
卷期 | 12:1 1997.03[民86.03] |
頁次 | 頁41-48 |
分類號 | 441.103 |
關鍵詞 | 夯實泥岩; 滲透性; 土團構造; 三軸試驗儀; 夯實能量; 滲透係數; 剛性壁滲透儀; Compacted mudstone; Permeability; Clod; Triaxal testing equipment; Compaction energy; Permeability coefficient; Rigid-wall permeter; |
語文 | 中文(Chinese) |
中文摘要 | 臺灣西南部麓山帶多為泥岩層所覆蓋,由於工程用地取得困難,以及大型工程所 需級配料取得不易,為使用泥岩作為工程材料,實有必要對夯實泥岩工程特性進行探討。本 文僅針對其滲透性進行研究, 經由一連串滲透試驗可得下述結論:( 1 )利用三軸柔性壁 滲透試驗, 經三種不同夯實能量、三種初始土團大小、和夯實曲線之探討, 其滲透係數 K 值變化不大。 在設定含水量下,其滲透係數 K 值約在 0.8 ∼ 8 x 10 cm/sec 之間。( 2 )當改用剛性壁進行滲透試驗時, 其滲透係數 K 值與柔性壁結果比較,濕側結果相差不多 但數據較為零亂,但乾側結果可能因側漏現象而相差達 100 倍左右。 |
英文摘要 | The hills of southwestern Taiwan are mostly mudstone. Mudstone should be considered as a local engineering material because sites for construction are difficult to find and also, backfill material for refillment engineering is seriously insufficient in this area. It is impotant that the engineering characteristics of the mudstone should be thoroughly investigated. This paper presents a study of the permeability characteristics of mudstone. It is discovered that: (1) The permeability coefficient is not sensitive to the clod effect, compaction effort and compaction curve when the triaxial flexural wall tests are employed. (2) When rigid-wall tests are performed, the perme-ability coefficient is a little scattered but similar to the results obtained from flexural-wall testing. Because of side leakage, a difference of up to 100 times is found on the dry side of the optimum moisture content. |
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