Simulation of water recovery and its effect on settlement of open-cut coal mine back-fill

摘要

Open-cut coal mine back-fill usually undergoes significant settlement due to inundation by surface water infiltration and groundwater rise. The rate and magnitude of inundation settlement is difficult to predict and quantify due to the large number of contributing factors. Consequently, none of the available settlement models and theories has been able to successfully describe the inundation settlement occurring in back-filled open-cut coal mines. A combination of laboratory and numerical simulation of settlement is a valuable means of estimating the inundation settlement of back-Fill. The settlements predicted by this simulation are in a good agreement with previous observations of inundation settlement in open-cut coal mine back-fill.