Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/98553
標題: Evaluating the Efficiency of Subsurface Drainage Systems during Large Landslides
大規模地滑區地下排水穩定工法之效益評估
作者: Der-Guey Lin
Kuo-Ching Chang
Eugene Choo
Miau-Bin Su
林德貴
張國欽
朱家勁
蘇苗彬
關鍵字: large landslide
subsurface drainage
drainage well
drainage gallery
potential sliding surface
大規模地滑區
地下排水
集水井
排水廊道
潛在滑動面
摘要: This study investigated the efficiency of subsurface drainage systems—which comprise drainage wells and galleries—to analyze the slope stability of landslides in Lishan in central Taiwan during Typhoon Toraji in 2001 (with subsurface drainage remediation) and Typhoon Amber in 1997 (without remediation) by using the numerical analysis method. The drainage effects of drainage wells and galleries were simulated by assigning a series of line-type and point-type drainage boundary conditions along drainage boreholes in the numerical model. The numerical results and monitoring data indicated that the subsurface drainage systems for handling landslides in Lishan are functional and capable of accelerating drainage of infiltrated rainwater caused by prolonged heavy rainfall and reinforcing slope stability against rapid deterioration during landslides.
為評估梨山大規模地滑區地下排水系統在穩定邊坡之工作效益,本研究採用地下排水 (集水井及 排水廊道) 施作前 (安珀颱風,1997)、後 (桃芝颱風,2001) 之降雨事件,進行邊坡之降雨入滲-地下水滲流穩定數值分析。數值模型中,將集水井及排水廊道之橫向集水管集排水效應,分別設定為:線型自由排水邊界, 以及點型排水邊界,來進行深層地下排水模擬。研究顯示設置於梨山地滑區之地下排水系統能有效且迅速集 排高強度及長延時降雨之入滲雨水,並減緩邊坡穩定性迅速惡化之不利影響。
URI: http://hdl.handle.net/11455/98553
Appears in Collections:第49卷 第04期

文件中的檔案:

取得全文請前往華藝線上圖書館



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.