采动影响下最大下沉角与煤层倾角关系的模拟研究

发布时间：2018-04-20 19:06

本文选题：倾斜煤层 + 地表下沉　；参考：《煤炭科学技术》2017年12期

【摘要】：从大量实测数据表明最大下沉角与煤层倾角并不是简单的线性关系,为了掌握最大下沉角随煤层倾角改变的变化规律,依据芦沟煤矿32101工作面的具体地质采矿条件,通过建立数值模型分析研究了煤层倾角在0°~45°时,最大下沉角与煤层倾角之间的关系。研究结果表明:当煤层倾角小于15°时,最大下沉角与煤层倾角呈线性关系;当煤层倾角大于15°时,得出最大下沉角与煤层倾角呈二次函数关系式,并通过南票矿区的实测数据验证了结论的正确性。利用此关系式有助于提高倾斜煤层开采沉陷预计的精确度。
[Abstract]:From a large number of measured data, it is shown that the maximum subsidence angle and the coal seam dip angle are not simple linear relations. The relationship between the maximum subsidence angle and the coal seam dip angle is studied by establishing a numerical model when the dip angle of coal seam is 0 掳or 45 掳. The results show that when the dip angle of coal seam is less than 15 掳, the maximum subsidence angle is linearly related to the dip angle of coal seam, and when the dip angle of coal seam is greater than 15 掳, the relationship between the maximum subsidence angle and the dip angle of coal seam is quadratic. The correctness of the conclusion is verified by the measured data in Nanpiao mining area. The use of this relation is helpful to improve the accuracy of prediction of mining subsidence in inclined coal seams.
【作者单位】：煤炭科学研究总院开采研究分院;天地科技股份有限公司开采设计事业部;
【基金】：国家自然科学基金资助项目(51604151)
【分类号】：TD327;TD82

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