Research of real-time effects of horizontal protecting stratum mining based on similar simulation experiment

In recent times, with the development of protection stratum, it is more and more important to investigate its effects. In this paper, in view of this situation, similar simulation experiment and site test are used to investigate the real-time effects at a certain mine of Pingdingshan Coal Group Company. The results of similar simulation experiment and site test show the stress and displacement variation of overlying rock and protected seam; define the max relative deformation and Roof Falling Interval; and determine the Protected Zone and Pressure Relief Angle. So, the result of research has great significance in directing the production of the mine and in developing the technology of protection stratum mining.