Abstract:
80% of coal resource in Xingcun Colliery is under villages,so rationally mining out coal under villages is a key problem for the colliery.In order to research mining subsidence rule,surface movement observation station was set up over East 1st mining area and whole surface movement data was obtained by surface movement and deformation monitoring.By calculating and analyzing observation data,the result was present that under deep extremely insufficient mining condition,surface subsidence was gentle,subsidence velocity was slow,movement time was long relatively and there was no active phrase.