The crusher is the key technology for semi-continued overburden stripping operation in open pit mine.The overburden material has a high bonding ability.When the overburden entered in the crushing chamber,the crusher will be easily to be stuck and jammed,which could be too difficult to have a normal operation of the crusher.The wheel type soft rock crusher provided and developed by China University of Mining and Technology can crush larger pieces of clay.The soft rock crusher has overcome the impact loading,sticking material,large quantity material and other difficulties with even material feeding.