financially supported by the National Natural Science Foundation of China (Nos.51204166 and 51174195);the Graduate Student Research Innovation Project of Ordinary University in Jiangsu Province (2013) (No.CXLX13_952)
Based on in-mine instrumentation and theoretical analysis of the unsymmetrical large-deformation that occurred in the roadway after excavation,Differential Floor Heave(DFH)was found to be the main reason for roadway f...