The surface subsidence caused by coal mining has very serious damage to the environment with increasing eco-nomic losses.Therefore,it is still very necessary to predict the surface subsidence of coal mining area.Through analysis of the improved sectional Knothe time function and sectional Weibull time function for the dynamic prediction of minging-in-duced subsidence,and the model-building concept of consistent time and space,a time-function model for the dynamic pre-diction of mining-caused subsidence was built,that is,Gompertz time function model,which is suitable for filling long-wall mining.After figuring out the methods of parameter solving and the dynamic moving prediction of total basin,we believe that the time function is highly consistent with the surface subsidence characteristics,which is applicable for the predicting of the mining-induced surface subsidence.Taking the surface moving observation station of the 22302 working face of a mine in Shaanxi as an example,the parameter reversion of Gompertz function was carried out,and its fitting precision was analyzed,verifying that the method meeting the requirement for the subsidence prediction.
关键词
煤炭开采/地表沉陷/沉陷预测/动态预计/Gompertz函数
Key words
coal mining/surface subsidence/subsidence prediction/dynamic prediction/Gompertz function
维普
万方数据