The technology of filling mining with superhigh-water material in fully mechanized coal mining face with large mining height

In order to solve the problem of exploiting coal resources under villages in Xing Dong mine,the fully mechanized filling mining with superhigh-water material in complex geological conditions such as great depth and high cutting mining face was put forward and its technical characteristics were expounded.The developed individual assembled hydraulic powered supports,filling system with superhigh-water material,coal mining and filling technology were introduced.The field monitoring results showed that working resistances of latter hydraulic prop were higher than the formers' and obvious pressure phenomenon of roof didn't appear;the deformation of earth's surface were controlled within level I,its value was small and the maximum deformation value was under 2cm.This technology resolved the problems of shortage of recoverable resources and the technology of exploiting coal resources under villages.