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为了使平煤五矿二1煤层能够安全开采,通过分析矿区地质、水文地质条件,选取寒灰含水层水压、富水性、底板有效隔水层等效厚度、脆性岩厚度和断层分形维数作为底板突水的主要影响因素,并采用改进模糊层次分析法(IFAHP)确定各因素的权重,建立煤层底板突水评价模型,对底板突水危险性进行分区。结果表明:五矿寒灰突水危险性由东向西先增强、后减弱,且以己四采区的突水危险性最高。
In order to make the second coal seam of Pingmei Minmetals Mine safe mining, by analyzing the geological and hydrogeological conditions in the mining area, the water pressure, water-richness of the ash-gray aquifer, the effective thickness of the aquifuge, the thickness of the brittle rock and the fractal dimension As the main influence factors of water inrush from the floor, the weight of each factor was determined by the improved fuzzy analytic hierarchy process (IFAHP). The water inrush model of coal seam floor was established and the risk of water inrush from the floor was partitioned. The results show that the danger of water hammer inrush from the Minmetals first increases from east to west and then decreases, and the risk of water inrush from the fourth mining area is the highest.