A Research On The Rule Of The Rock Burden Movement And Stability On The Filling Of Urtra Stoped-out Area In Tongling Shizishan Copper Mine

The title of the master degree thesis is "A research on the rule of the rock burden movement and stability on the filling of ultra stoped-out area of Tongling Shizishan Copper Mine". A summary description of some research is given blow:1 .The history and the present conditions of the research of rock mass stability are primary summarized.2.The rules of rock burden movement of Tongling Shizishan Copper Mine are analyzed, based on the monitoring result of the mine's surface subsidence. From the rules we can see that the rock burden above stoped-out area is steady during the research period.3.By using the SD-Sigma program, the process of mining and the filling of stoped-out area is simulated. What we know from the analyzing result is, after the fill disposal of the stoped-out area, the stress concentration in the rock diminished and the mine is steady as a whole.4.On the above program, a midified program of simulating the process of mining and the filling of stoped-out area is developed, which can be applied in similar mine engineering problems.5.Finally the author has proposed that the mine must monitor the rock burden movement and surface subsidence sequentialy.