Definition of the roof strata movements in longwall mining method

In longwall mining method, one of the most important factor for production plannig and support design is geomechanical properties of hangingwall and behaviour of the roof strata during cool excavation. There are many mathematical formulations developed to determine the height of immediate roof but in situ measurements always give a better idea to define the loads on support. In this study, a detailed measurement results taken from Omerler underground coal mine that is a foundation of T.K.I (Turkish Coal Enterprises) are given to determine the height of immediate roof. For this purpose a special measuring equipment was designed