It is not a phenomenon unique to your country. In Spain, with the recent inauguration of the first high-speed line, the closing of secondary lines has "come back in favor," as occurred in the mid-1970s.
其實拆鐵路的問題並不是貴國才有的現象，在西班牙，自第一條快速鐵路在近日通車後，也開始「流行」清除舊有的支線，重演一九七○年代交通改革，拆掉許多鐵路支線的「悲劇」。