DEVELOPMENT CHARACTERISTICS OF THE ROCK FRACTURE FIELD IN STRATA OVERLYING A MINED COAL SEAM GROUP.

The fracture development of the overlying strata after coal mining is an important guarantee of efficient gas drainage.In order to explore the fracture evolution characteristics close to a mined coal seam group, the F15.16-24130 working face in the Pingdingshan No.10 coal mine was taken as the research Stove Temperature Sensor background.The FLAC3D

A main question for semiotics today is how far does the paradigm for the action of signs, semiosis.extend.There is general agreement by now that semiosis extends at least as far as awareness or cognition occurs, which includes the entire domain of animal sign usage, or zoosemiosis.The open question today is whether semiotics is broader still, Prena