有限元渗流分析法在顶管穿堤施工质量控制中的应用

Application of finite element seepage analysis method in the quality control of pipe jacking dike penetration construction

生态补水是一种简单且见效快的水生态修复工程技术措施。补水管道施工过程中,有时须穿越较高等级的防洪堤。为确保施工期间防洪堤安全,需对防洪堤的渗流稳定进行分析。本文以南昌一级补水管道穿赣江南大道防洪堤段为研究对象,采用顶管施工技术措施,通过建立三维有限元模型,分析了补水管道施工对防洪堤的渗流稳定影响,为工程的安全建设提供了设计依据。本研究成果可为其他类似穿越堤防设计提供参考。

Ecological water replenishment is a simple and effective water ecological restoration engineering technical measure.It is sometimes necessary to pass cross the higher grade levee during the construction of the water replenishment pipelines.The seepage stability of the levee should be analyzed in order to ensure the safety of the levee during construction.The paper is based on the flood control embankment section of Ganjiang South Avenue-the first grade water replenishment pipeline in Nanchang.The pipe jacking construction technology is adopted.The 3D finite element model is established to analyze the influence of the water replenishment pipeline construction on the seepage stability of the flood levee,thereby providing the design basis for the safety construction of the project.The results of the study can provide reference for other similar levee crossing designs.