Based on engineering tests of muck foundation treatment project

a model of the reasonable thickness of overburden on muck foundation (including the original covering and artificial filling soil) is established using static-dynamic drainage consolidation method under impact loading. The basic considerations of the model are the bearing stratum capacity of muck foundation and the adaptive relations among static loading

dynamic loading and drainage system. Further analysis is made of the model parameters including foundation pressure diffusion angle

bearing capacity eigenvalues of muck foundation and maximum allowable stress ratio R. The parameter R in the model visually and quantitatively reflects the mutual adaptation relationships among impact loading

distribution of drainage system and thickness of overburden. In addition

the parameter R can be used as evaluation parameter for muck foundation reinforcement effects. And the results of relevant tests also show that parameter has a larger value under actual tamping than the 23°-30° in the Code for Design of Building Foundation of China. Engineering applications indicate that the model is in good agreement with the reality; and the quantitative relation also provides convenience in design and application for general engineering staff

which can be used for reference or guidance in similar soft foundation treatment projects.