Discussion on the Methods for Mass Excavation and Embankment in Silt

When road construction crosses low lying swamp land or pond, it must dig or fill in silt. Because the slit is running and its bearing capacity is very small, constructing road in silt is very difficult. Against the characteristic of digging and filling in silt, this paper proposes many principles. When digging in silt, take best efforts to reduce the perturbance and destruction of adjacent soil body, and persist in digging silt near the excavating machine and unloading silt far from excavating machine. When filling in silt, take best efforts to extrude silt entirety. At last, the paper introduces several useful methods of digging and filling in silt on a large scale. They are the method of placement in layers, the method of road bank extruding silt, the method of rib slab filling and the method enclosed filling, directly digging, enclosed digging and semienclosed digging. Analyzing and comparing these methods from their technics, useness bound and notice proceeding, providing evidence for construction.