利子依达隧道位于成昆线乌斯河站至尼日站区间K283处,为成昆线防洪改线工程。1981年7月9日该段线路被泥石流冲毁,为彻底整治决定内移改线,改修隧道在利子依达沟底通过。本工程由成都铁路局组织修建,第二勘测设计院设计,成都局工程总公司二公司施工,工期1年10个月,于1984年6月20日正 The Lizi Yida Tunnel is located at K283, the interval between the Ust River Station and Niger Station of Cheng-Kun Line, and serves as flood-control and line-changing project of Cheng-Kun Line. On July 9, 1981, the route was washed away by mudslides and the decision was made to completely reroute and reroute the tunnels. The tunnel was rebuilt at the bottom of the Yizid by the ditch. The project was organized by the Chengdu Railway Bureau, the second survey design institute design, Chengdu Bureau Engineering Corporation Construction Company 2, duration 1 year and 10 months, on June 20, 1984 is