高運量捷運淡水線線上緊急維修作業改善之研究

Abstract

高運量淡水線自去年營運通車以來各子系統仍處於未穩定的 時期，致 使故障狀況發生次數偏高影響列車服務水準。因此本研究目的 便是研擬新 新的善方案以因應目前故障狀況偏高的過渡時期。 本研究首先以故障樹分析法（Fault Tree Analysis）來剖析電聯車、 號誌和通訊三個子系統故障發生的來源，然後檢討目前淡水線線上緊急維 修作業並提出改善方案，最後以單線運轉與迴送機廠區分模式來評估改善 前後的差異。 本研究結果顯示電聯車、號誌和通訊三個子系統實 際發生平均故障間 隔時間（Mean Time Between Failure）大於合約規 定的設計值。此一現象 透過單線運轉與迴送機廠區分模式評估證明，發 現本文所提出改善方法， 將可比原來作業方式減少一半故障列車迴送機 廠，且繼續留於主線營運維 持列車服務水準。 Due to the unstability of operating system , there are usually accidents happened in Tamshui MRT line . This situation indeed reduces the train services. The purpose of this study is to propose new programs to improve the situation of occasional accidents . In this study , three subsystems , trains , signal , and communication , are analyzed by fault tree analysis . The emergence maintenance activity on line is also investigated . Therefore , the improvement program are proposed . Finally , the signal operating and back depot distinguishing model is established to evaluate the difference before and after the implementation of the proposed programs . The results show the occurring MTBF（Mean Time Between Failure） of the three subsystem is greater than the design MTBF . The signal operating and back depot destinguishing model proves that the proposed programs can make50% reduction of the fault train numbers to return depot . There fault trains can continue running on line .