Study on Water Enrichment Prediction of Roof Sandstone Aquifer Based on the Fuzzy Clustering Method:A Case Study on Longgu Coal Mine

The coal mining of Shanxi formation,Permo-Carboniferous system in North China is severely affected by the water from roof sandstone aquifer and the water enrichment of sandstone aquifer depends on many factors.The paper analyzed the influencing factors of the water enrichment of the roof sandstone taking the mining of Seam No.3,Shanxi formation in Longgu mine as an example.On the basis of single factor analysis,the authors used the fuzzy clustering method to evaluate the water enrichment of sandstone aquifers.The analysis showed that the water enrichment of sandstone aquifers of Shanxi formation in Longgu mine were affected by many factors,such as the thickness of sandstone,the combination features of sandstone and mudstone,and the development level of geological structure,etc.Taking the influencing factors as the information samples of aquifer water enrichment indices,we made the clustering analysis of grading and zoning on the water enrichment of sandstone aquifer by using the fuzzy clustering method,providing a certain directive significance for the water prevention and control and a new approach for the prediction of water enrichment of sandstone aquifer.