Evaluation Method of Water Hazard Control Effect of Coal Seam Floor in Deep Mining: Sequence Verification Evaluation

Deep, highly pressurized aquifers seriously threaten the exploitation of resources North China coalfield. At present, there is no particular guidance system to evaluate prevention and control effect water inrush disaster in deep coal seam mining. Therefore, this research focuses on evaluation method for confined Based upon various methods, such as effective thickness resistance capacity aquifuge, coefficient, GIS (Geographic Information System) analysis grouting data, dense drilling verification, professional based integrated sequence evaluation, mining was put forward first time. The proposed called “sequence verification (SVE)” method. effects Ordovician Huanghebei coalfield evaluated using SVE results show that can effectively reflect from provide scientific basis safe production