Subsidence and expansion coefficient of different layers in mining overburden broken area based on simulation experiment
In order to study the intervention law of gangue slurry in the broken area of mining overburden rock,based on similar simulation experiments and UDEC numerical simulation,the subsidence and swelling coefficients of different layers of the working face model were determined,and the best filling area was obtained.The research results show that the dis-placement of the roof rock layer is decreasing from bottom to top in the vertical direction,and the amount of subsidence of the roof rock layer is roughly symmetrically distributed in the tendency.The swelling coefficient of the collapse zone in the goaf is small in the middle and large at both ends.The best filling area is the collapse zone of the goaf.The conclusion of the study provides a certain theoretical basis for the slurry filling technology to effectively deal with gangue.
万方数据
维普
