Study Of The Laws Of The Rock Strata Movement Based On The Mine Of Thick Topsoil And Deep Mining

The coal mining will destroy the originally mechanical balance of the rock strata and undermine the integrity of rock with moving and deforming. When the mining area is up to a certain range,movement and deformation will extend to the ground and cause surface subsidence.The surface subsidence change the original state of other buildings within sphere of influence,destroy ecosystems, affect the people's livelihood and production and even endanger the lives and property.In order to minimize the loss,appreciate fully the process of movement and deformation of rock and make a correct for the status during,it is important to obtain parameters choosing scientific and reasonable methods with the help of special software of rock movement on the basis of the measured data.This paper was based on the observational data of the first coalface of Zhao-lou mine, which were analyzed and collated.Using advanced theory and method of models and parameters identification and combining principie of probability-integral method,the parameters were determined in condition of the special geological mining and the curve map were protracted.The map can be the basis for mining subsidence forecasting and controlling.Using the method of regression analysis and MATLAB software to regress analysis to the sample on parameters of rock strata and surface movement and geological and mining conditions of Zhao-lou mine and many mines collected,the formula were set up based on studying relations between parameters and geological and mining conditions.The dependability of the formula has been verified.The formula can be reference to the generation of mining or the similar conditions and justify to parameters obtained by mine and provide the foundation for research on the parameters of the rock strata and surface movement.