顶管技术在某排涝泵站穿堤建筑物设计中的应用与分析OA

To ensure the safety of the existing dike crest road and avoid large-scale excavation and backfilling,this study focuses on the special design links of the dike-crossing structure for a drainage pumping station project.After comprehensive comparison of multiple schemes,pipe jacking is finally adopted for dike crossing.In this scheme,a large cross-section rectangular jacking pipe is used as the outlet pressure pipeline of the pumping station.Calculations and analyses are conducted on the seepage stability of the pressure culvert and the jacking force required for dike undercrossing.The results show that the seepage stability of the dike-crossing culvert meets code requirements,and the frictional resistance of the main pump house can satisfy the required jacking force.The application of large cross-section rectangular pipe jacking in the design of dike-crossing structures for water conservancy and hydropower projects can minimize adverse impacts on surrounding areas.The findings provide a reference for similar engineering projects.