Grey Correlation Analysis and Regression Estimation of Mining Subsidence in Yu-Shen-Fu Mining Area

AbstractThis paper studied the relationship between the surface max subsidence coefficient and influence factors with grey correlation analysis method, based on coal existent condition and survey data of mining design and the surface rock displacement in the 15 typical coal mining places of Yu-Shen-Fu mining area. The analysis results showed that comprehensive pullman's thickness of overburden strata, disturbance coefficient, mining thickness ratio and etc. are the key influence factors to the mining subsidence. Taking the surface max subsidence coefficient as the strain value and the above key influence factors as independent, a gradual regression analysis method was applied to set up a regressive equation. It is hoped that the paper gives a scientific reference to the prediction of mining subsidence before the mining operation in coal mining area