Applying image processing technology,collision course of the wet coal group with a wall is investigated and the failure patterns of wet coal agglomerate are analyzed.Using contact mechanics theory and liquid bridge theory,dynamics mechanics of breakage in wet agglomerates has been studied and the dynamics conditions needed for the breakage of wet agglomerates is obtained.Three failure patterns are observed termed as impact failure,gravity-impact failure and shear-impact failure.It is found that impact again...