頁籤選單縮合
題 名 | 麥寮砂動力夯實夯擊效益之實驗研究=An Experimental Study on the Effectiveness of Dynamic Compaction on Mai-Liao Sands |
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作 者 | 馮道偉; 葛致中; | 書刊名 | 中原學報 |
卷 期 | 32:3 2004.09[民93.09] |
頁 次 | 頁287-296 |
分類號 | 441.103 |
關鍵詞 | 麥寮砂; 動力夯實; 夯錘; 電子圓錐貫入阻抗; 陷坑; Dynamic compaction; Mai-liao sands; Drop weight; Electric cone penetration resistance; Crater; |
語 文 | 中文(Chinese) |
中文摘要 | 動力否實係將重鍾以自由落體方式育擊地表,可產生彈性波來改良深層砂土相對密度。根據彈性波理論推估表面波傳遞67%之秀擊能量,可是其對地盤改良並無益處;而實體波傳遞33%之秀擊能量,促使土壤顆粒排列趨於緊密,若能增加實體波傳遞能量之 比例,應可有效地提升地盤改良效果。本研究使用室內動力否實試驗儀及三種不同細顆粒含量之麥寮砂試體,進行動力秀實試驗,以探討細顆粒含量及努鍾鍾底形狀對地盤改良效果之影響。試驗結果顯示,相較於平底秀鈕,錐底努鍾努擊後造成陷坑體積約多出5-25%。細顆粒含量愈高,陷坑體積愈大,電子圓錐貫入阻抗增加量皆愈高,而努鍾芬 擊後奔擊點下方主要改良深度約為芬鍾直徑之4倍。綜合而言,錐底努鍾之改良效果優於平底努鍾。 |
英文摘要 | Recently, the pollution problem in Taiwan is more and more serious and the transitional pools did not have more perfect water supply and drainage system. Fishers were in order to take enough and good aquaculture water, so they sat gate and the facilities of pumping to get water by themselves. Itresulted in layer depression. Because they used the same canal for water supply and drainage, it caused the problem of fish diseases infection to each other. In order to solve these problems, it is needed to plan and build complete public facilities in aquaculture district. This study is in order to allocate the building sequence of 42 aquaculture districts fairly and reasonably. Classifying 42 aquaculture districts by area, and taking water method, and water carrier method, and water supply method. According to the data from the total engineering cost of planning 42 aquaculture districts based on the report of Agricultural Engineering Research Center together with the results of field investigation collected by Fisheries Administration Council of Agriculture in 2001, and the average survival rate and one fish weight when harvesting and average unit price of main fingerling in 1995-2000 of 42 aquaculture districts, the economical benefit of 42 aquaculture districts is analyzed by cost-benefit ratio method to estimate annual cost, annual benefit, and cost-benefit ratio. In order to consider both economical benefit and developing balance in every county when we are optimizating. Base on the results of cost-benefit ratio analysis, we can sort all districts in Taiwan and in every county in sequence. The result can be given priority to the future reference onconstruction or consideration. |
本系統中英文摘要資訊取自各篇刊載內容。