The practical investigation and theoretical analysis indicate that the soft rock-soil has rheological characteristics; the dynamic loading can accelerate rheological action of soft rock-soil

and become the important factor and primary power which induce geotechnical engineering disaster and geological disaster. The dynamic rheological characteristic of sludge soft soil are tested; the dynamic viscoelasto-plastic rheological model and rheological equation are established; and the expression of dynamic rheologic parameters are deduced. The dynamic rheological parameters of sludge soft soil are tested under dynamic shear action; the influential characteristic is analyzed that the factors such as dynamic shear frequency

shear strain

water content of sludge soft soil

etc. effect dynamic rheological parameters of sludge soft soil. The research results have actual significance for us to open out the influence disciplinarian of rheological mechanism characteristics and rheological parameters of sludge soft soil under dynamic loading. It has also important academic significance for us to find out rheological dynamics of soft rock-soil bursting out geotechnical engineering disaster and geologic disaster.