紧邻既有线施工安全压力极大,为确保既有线行车安全,必须制定切实可行的施工方案。文章全面系统介绍了宁西二线D1yK163+459.83~D1yK163+954.23段路基桩板式挡墙防护桩施工方案,通过设置防撞桩物理隔离等防护措施,按期完成了施工任务,最大程度减少了对营业线行车安全的影响。 There is great pressure on construction safety in the immediate vicinity of existing lines. To ensure the safety of existing lines, a practical construction plan must be worked out. This paper systematically introduces the construction scheme of the pile-type retaining wall protective pile for D1yK163 + 459.83 ~ D1yK163 + 954.23 sections of the second line of Ningxi Second Line. The construction tasks are completed on schedule according to the protection measures such as the physical isolation of the anti-collision pile so as to minimize the impact on the business line Impact of driving safety.