supported by the State Key Laboratory of Coal Resources and Sate Mining,China University of Mining and Technology (No.SKLCRSM13X07);the National Natural Science Foundation of China (No.51174195);Chinese National Programs for Fundamental Research and Development (No.2013CB227900);the Fundamental Research Funds for the Central Universities (No.2014XT01)
A reasonable unsupported roof distance(URD) when advancing underground coal mine roadways can contribute greatly to safe and rapid roadway development.A mechanical model of the roof,using the relationship between the ...
supported by the National Programs for Fundamental Research and Development (No. 2013CB227900);the National Natural Science Foundation of China (Nos. 51204166, 51174195 and 51474209);the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
There are two states for the coal-mass on the goal-side which is in stress equilibrium: the state of limit equilibrium (the bearing stress in the coal-mass equals its ultimate bearing stress) and the state of non- ...
provided by the National Natural Science Foundation of China(Nos.51204166 and51174195);the Jiangsu Province ordinary university graduate research innovation projects(No.CXZZ12_0954)
The soft rock's heterogeneity and nonlinear mechanical behavior cause extremely difficult maintenance on the soft rock roadway. Aiming at the asymmetric deformation and destruction phenomenon appearing after excavatin...
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...