The Development of the Water-Richness Evaluation Model for the Unconsolidated Aquifers Based on the Extension Matter-Element Theory

The water-richness of Quaternary unconsolidated aquifers is closely related to the safe production of coal mining in shallow area near the Quaternary System. We attempt to establish a model for evaluating the water-richness of the unconsolidated aquifers quantitatively. We first obtained the main factors affecting the water-richness of the unconsolidated aquifers, including the aquifer thickness m, the proportion of the clay layer in the aquifer, the specific water yield q, and the permeability coefficient K. Using the AHP method mentioned above, the final weight for each affecting factor is illustrated in the vector w = (0.4921 0.1038 0.2686 0.1354). Secondly, we proposed the quantitative evaluation levels of the water-richness in the unconsolidated aquifers and the extension matter-element method to establish the evaluation model. Finally, we applied and verified the evaluation model by takeing the Xingyuan Coal Mine in China as an example. The results indicate that the water-richness of aquifer from the evaluation model are consistent with the field measurement results based on the ground transient electromagnetic method.