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題名 | 岩體隧道滲流量之預測: 以坪林隧道為例=Prediction of Water Flow Into Rock Tunnel: A Case Study of Pin-Lin Tunnel |
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作者 | 李振誥; 李宏徹; 黃崇琅; 林碧山; Lee, Cheng-haw; Lee, Horng-cheh; Huang, Chung-lang; Lin, Bih-shan; |
期刊 | 中國土木水利工程學刊 |
出版日期 | 19981200 |
卷期 | 10:4 1998.12[民87.12] |
頁次 | 頁595-604 |
分類號 | 441.9 |
語文 | chi |
關鍵詞 | 透水係數梯度; 地下水; 隧道滲流; Hydraulic conductivity gradient; Groundwater; Tunnel inflow; |
中文摘要 | 本研究根據透水係數隨深度呈指數減少之現象,而建立一模式,用以分析岩體隧 道滲流量及探討各參數如地表初始透水係數值、透水係數梯度、隧道半徑、隧道深度及地表 水體高度對隧道內滲流量之影響。同時根據收集之現場隧道資料,用以比較並驗證本模式之 準確性。文中主要利用地下水水流控制方程式及傅立葉轉換,求得控制方程之解析解,並利 用解析解作敏感度分析。結果顯示,隧道內滲流量首先隨隧道深度增加而增加,而後隨深度 增加而減少。最後本文將解析解應用於國內北宜高坪林隧道滲流量之預測,結果亦顯示坪林 地區之大量湧水與隧道深度及隧道經過破裂岩體之破裂帶有關,此破裂帶可能與近地表之地 下水連通。 |
英文摘要 | The paper develops a model to predict water flow into the tunnels, using the concept of an exponential decrease of hydraulic conductivity against the depth. The influences of surface hydraulic conductivity, hydraulic conductivity gradient, tunnel diameter, tunnel depth and hydrostatic total head to water inflows of the tunnel are investigated. In the formulation the Fourier transformation is applied to solving the governing equation of steady-state groundwater flow, and then the sensitivity analysis of the analytical solution of the model is discussed. The results indicate that inflows at first increase against depth, and then decrease as the tunnel becomes deeper. Finally, the analytical solution was applied to predicting the water inflow in Pin-Lin tunnel, Taiwan. It is shown that the great amount of groundwater inflow in Pin-Lin tunnel is associated with the tunnel depth and the existence of fractured rock zone that may be submerged by the subsurface water. |
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