Research on the Regularity of the Stress and Deformation of the Roof Coal
According to the model experiment of similar material and finite element method, the paper deals with the regularity of the stress and deformation of "three hard conditions" in the case of the Datong, and lays the basis of fracture and the destruction in the roof coal.
The paper introducess the implemented conditions which colling recycle of flexible base on Ying-DaLine.It over all xpounds the investigation of road condlitions of original pavement,indoor trial study,determination of trial lot plan as well as completion of trial lot etc.