|
Abstract An elastoplastic constitutive model considering static liquefaction of tailings sand was proposed in the framework of critical state soil mechanics. The constitutive model was embedded into the software FLAC to simulate the static liquefaction phenomena of tailings pond. The predicted results from the numerical simulation of undrained triaxial tests using the proposed model have a good agreement with the experimental data of samples of sand-silt mixtures，which proved the capability of the model to describe the mechanical response of tailings sand. A typical case of liquefaction of tailings dams were chosen to validate the proposed model. The simulated results of the case show that the static liquefaction can happen in certain areas of the pond and serious failure of flowing sliding may occur with the rising of pore water pressure under the condition of high depositing rate.
|
|
Received: 18 June 2013
|
|
|
|
2014, Vol. 33 
