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为了研究煤层顶板突水风险,以小浪底水库下新安矿区为例,根据矿区地质条件和水文地质参数,在分析煤层顶板上覆岩层导水裂隙带高度的基础上,计算出有效隔水层厚度,并建立突水模型,利用顶板突水阈值和GIS技术对矿区安全性程度进行分区,进而对煤层顶板水害进行评价和预测,为煤矿的安全合理开采提供科学依据。
In order to study the risk of water inrush from coal seam roof, taking the Xin’an mining area under Xiaolangdi Reservoir as an example, based on the geological conditions and hydrogeological parameters of mining area, based on the analysis of the height of water-bearing fractured zone above coal seam roof, The water inrush model is established. The roof water inrush threshold and GIS technology are used to partition the degree of safety in coal mines. Then the water hazard of coal seam roof is evaluated and predicted, which provides a scientific basis for the safe and reasonable mining of coal mines.