随着城市化的快速进展，地下空间开发对缓解土地资源紧张具有重要意义，但同时也给周边地下设施的安全带来挑战。基于有限差分法和离散-连续耦合方法分别构建基坑开挖数值模型，通过有限差分模型研究基坑开挖过程中地铁动载对邻近电力管线沉降变形的影响；利用离散-连续耦合数值模型实现管道与周围离散土体的耦合，进而分析管道和周围土体在基坑开挖过程中的传力机制。结果表明：随着基坑开挖层数的增加，地下电力管道在垂直和水平方向上的位移均呈现出明显的变化趋势；在垂直方向上，管道在基坑区域主要表现为沉降，而在基坑外则相对上升；水平方向上，管道向基坑方向的位移随开挖层数的增加而增大；当地铁动荷载的偏应力幅值从10 kPa增至30 kPa时，地下电力管道的最终沉降量分别达到了3.36、5.60、7.44 cm呈现上升趋势，接触力增大且分布不对称性更加显著；基坑开挖和地铁动荷载对地下电力管线的影响显著，可能导致管道的潜在脆弱区域风险增高。

As urbanization advances rapidly, the development of subterranean spaces plays a crucial role in alleviating the strain on land resources, yet it concurrently poses challenges to the safety of surrounding underground facilities. Numerical models of excavation pits were constructed using the finite difference method and a discrete-continuous coupling approach. The finite difference model was employed to investigate the impact of subway dynamic loads on the settlement and deformation of adjacent power pipelines during the excavation process. The discrete-continuous coupling numerical model facilitated the simulation of the interaction between pipelines and the surrounding discrete soil mass, thereby analyzing the stress transfer mechanism during the excavation of the pit. The findings indicate that as the number of excavation layers increases, the displacement of the underground power pipelines in both vertical and horizontal directions exhibits a pronounced trend. Vertically, the pipelines predominantly settle within the pit area while relatively rising outside of it. Horizontally, the displacement of the pipelines towards the pit intensifies with additional excavation layers. When the deviatoric stress amplitude of the subway dynamic load increases from 10 kPa to 30 kPa, the final settlement of the underground power pipelines reaches 3.36 cm, 5.60 cm, and 7. 44 cm, respectively, showing an upward trend with an increase in contact force and more significant asymmetry in its distribution. The influence of pit excavation and subway dynamic loads on underground power pipelines is substantial, potentially heightening the risk of vulnerable areas within the pipelines.