Translated Titles

Evaluating the Efficiency of Subsurface Drainage Systems during Large Landslides




林德貴(Der-Guey Lin);張國欽(Kuo-Ching Chang);朱家勁(Eugene Choo);蘇苗彬(Miau-Bin Su)

Key Words

大規模地滑區 ; 地下排水 ; 集水井 ; 排水廊道 ; 潛在滑動面 ; large landslide ; subsurface drainage ; drainage well ; drainage gallery ; potential sliding surface



Volume or Term/Year and Month of Publication

49卷4期(2018 / 12 / 01)

Page #

199 - 213

Content Language


Chinese Abstract


English Abstract

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.

Topic Category 生物農學 > 農業
生物農學 > 森林
生物農學 > 畜牧
生物農學 > 漁業
生物農學 > 生物環境與多樣性
工程學 > 土木與建築工程
工程學 > 市政與環境工程