10月18日，山海关工务段职工正在更换道岔。进入10月份以来，沈阳铁路局山海关工务段提前对管内1236公里线路进行全面安全检查，对冻害地段及重点道岔进行集中整治，确保冬春运列车运输安全。新华社发（高锦旭摄）    On October 18,Shanhaiguan Labour wu paragraph worker is changing switch.Enter since October,Shenyang railway shanhaiguan ahead of Labour wu paragraph to tube 1236 km line to conduct a comprehensive safety inspection,In cold area and key switch for centralized regulation,Ensure that winter Spring Festival transportation train transportation safety.The xinhua news agency hair(GaoJinXu perturbation)