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为改善综采条件下导水断裂带高度预测方法的适用性,提高预测精度,以综采条件下覆岩运移规律为基础,以关键层所处相对位置及是否破坏为判别标准,结合统计方法,提出了导水断裂带高度预测方法。若主关键层采动未破坏,该关键层与开采煤层的距离即为导水断裂带高度,若采动破坏,且向上不存在亚关键层,采用适当经验公式预测导水断裂带高度,若采动破坏,且向上存在亚关键层,对亚关键层进行类似上述主关键层的新一轮判断预测,依此类推完成预测。多个矿区应用说明,新方法适用性强精度高。
In order to improve the applicability of the method for predicting the height of water-conducting fracture zone under fully mechanized mining conditions and improve the prediction accuracy, based on the rule of overlying strata migration under fully mechanized mining, taking the relative position of the key strata as the criterion, Method, the method of predicting the height of water-bearing fault zone is proposed. If the mining of the main key layer is not damaged, the distance between the key layer and the coal seam is the height of the water-carrying fault. If there is no sub-critical layer uplift, the empirical formula is used to predict the height of the water- Mining and sabotage, and the existence of the sub-critical layer up, the sub-critical layer similar to the main key layer of a new round of predictive predictions, and so on to complete the forecast. Multiple mining application note, the new method is highly applicable and precision.