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題名 | 地表補注對蘭嶼破裂安山岩體滲入行為之研究=Effect of Surface Recharge on Infiltration of Water Through Fractured Andesite Rock in Lan-Yu Site |
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作者姓名(中文) | 李振誥; 許廣宗; 張善順; | 書刊名 | 中國土木水利工程學刊 |
卷期 | 9:3 1997.09[民86.09] |
頁次 | 頁459-471 |
分類號 | 441.103 |
關鍵詞 | 地表補注率; 地表水入滲; 未飽和層; 坡裂岩體; 水力參數; Surface recharge; Water infiltration; Unsaturated zone; Fractured rock; Hydraulic parameters; |
語文 | 中文(Chinese) |
中文摘要 | 本文主要目的乃在於對低透水性破裂岩體現場地表水補注對入滲行為進行分析及模擬參數 值實驗調查,並以蘭嶼核廢料貯存場安山岩體為評估分析探討對象。分析模式以定率模式序率模式 分別探討之。結果顯示殘餘含水量、飽合與未飽合透水係數、岩體特性參數、地表補注率等水力性 質將影響入滲流速與入滲時間。應用分析模式於蘭嶼核廢料貯存場安山岩體,指出隨地表補注率增 加而入滲比流量將漸增而趨於4.82cm╱hr的極值。當地表補注率大於1cm╱hr時,其入滲流經1m 厚的安山岩所需時間約需7個月,顯示該岩體現場的入滲相當緩慢。在地表補注率大於10cm╱hr 時,隨地表補注率增大,相對含水率期望值亦增大而趨於飽和。 |
英文摘要 | An infiltration evaluation methodology ( IEM ) is developed for estimating the effect of the surface recharge on the infiltration rate of water through the andesite rock barrier. The method is applied to the surface recharge at Lan-Yu waste repository site in Taiwan. The analysis of the infiltration is performed using stochastic and deterministic models. The IEM is based on the field and laboratory experiments in collecting the data of rock properties and recharge stochastic variables. The simulation results indicate that the travel time and the travel water velocity through the unsaturated zone are related to the hydraulic propteries such as the residual water content, the saturated and unsaturated hydraulic conductivity and the surface recharge. Applications of the model to Lan-Yu andesite rock show that an increasing surface recharge will increase the specific flux (specific discharge) and the specific flux approaches to an extreme value of 4.82cm/hr. When the surface recharge is larger than 1cm/hr, the expected value of the travel time of water flowing through unit thickness is about 7 months. The relative water content approaches to unit when the value of surface recharge is larger than 10cm/hr. |
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