This paper presents the patent technology principle of“control-loaded explosive sludge-extruding displacement method”and mainly introduces the Xuanmen third-phase reclamation engineering construction control and dam detection. Based on the engineering practice on the deep soft soil foundation, it is concluded that the method is economical and feasible. The application of the control-loaded explosive sludge-extruding displacement technique can guarantee the construction quality of the project and control project cost. The design and construction methods and empirical parameters can be used as a reference for future projects.