TRD-D machine is a special equipment for TRD cutting method (Trench cutting Re-mixing Deep wall Method). The application of this equipment opens a new way for foundation pit support and water conservancy and seepage prevention. The TRD-D machine uses a cutting box with a chain drive cutter head and a grouting tube inserted into the ground to perform deep cutting and traverse cutting, and performs up-and-down motion cycle stirring. At the same time, it is filled with cement coagulant, and it forms a uniform cement soil after curing. Continuous wall. If a core material such as H-shaped steel is inserted in the process, the continuous wall can be used as a retaining or anti-seepage or load-bearing wall in the excavation of foundation pits.