CAJ | 학술논문

台湾位于欧亚板块与菲律宾海板块交界带，岩体破碎且地下水丰沛，暴雨期间易肇生坡地灾害。台湾南回铁路沿线多处隧道边坡具有浅岩覆与常渗水的现象，若坡地发生失稳将严重影响铁路营运安全。采用区域地下水经营观念，以水文地质模式分析、评估降雨和地下水对边坡稳定性的短期与长期影响，并透过情境模拟方式评估各种排水配置对隧道边坡稳定性的提升程度，并研拟优化的工程方案以降低致灾风险。
태만위우구아판괴여비률빈해판괴교계대，암체파쇄차지하수봉패，폭우기간역조생파지재해。태만남회철로연선다처수도변파구유천암복여상삼수적현상，약파지발생실은장엄중영향철로영운안전。채용구역지하수경영관념，이수문지질모식분석、평고강우화지하수대변파은정성적단기여장기영향，병투과정경모의방식평고각충배수배치대수도변파은정성적제승정도，병연의우화적공정방안이강저치재풍험。
Taiwan is located at the junction area between Philippine Sea Plate and Eurasian Plate.The rock mass is ex-tensively disrupted and abundant in groundwater.Accordingly,the geologic hazards,such as landslides and debris flows,frequently occur,especially during the heavy rainfall.Several tunnel slopes of the South-Link Line of Taiwan Railway are located under the unfavorable conditions of shallow overburden and water leakage.Therefore,the slope sta-bility will significantly affect the railway operation safety.This study applies the concept of the regional groundwater management to control the short and long-term effects of rainfall and groundwater on the slope stability.We conduct nu-merical simulations on different drainage patterns so as to increase the slope stability and decrease the hazard risks.Our preliminary results and experience appear to be useful for similar tunnel engineering and regional groundwater manage-ment in mountain areas.