Influence function method of analysis for ground subsidence due to deep mining of metal ore-deposit

Based on results of the statistical analysis of a large amount of measured data in mining engineering,the theoretical method for analysis of ground subsidence due to deep sub-critical mining of metal ore-deposit is established by using the theory of Influence Function.The formulas of two-dimensional and three-dimensional problems are developed and applied to the prediction of the ground subsidence due to deep sub-critical mining by pillarless sublevel caving method in Xiaoguanzhuang Iron Mine.The agreement of the theoretical results with the field measurements shows that the method is satisfactory and the formulae obtained are valid and thus can be effectively used for predicting the ground subsidence due to deep sub-critical mining of metal ore-deposit.