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根据急倾斜煤层开采地表沉陷基本特点和概率积分法原理,将急倾斜煤层开采简化为直立煤层的单元开采,基于欧拉常数,提出了急倾斜煤层开采(煤层倾角>75°)的最大下沉值的对数预计法。利用孔集矿的实测资料对计算方法进行了验证。研究表明,该方法公式中所用参数稳定,可为急倾斜煤层开采造成的地表沉陷预报预警工作提供理论支持,具有较强的实用性。
According to the basic characteristics of surface subsidence and the principle of probability integral method in steeply pitched coal mining, the mining of steep coal seam is simplified to the unit mining of vertical coal seam. Based on the Euler constant, the maximum sinkage of steep coal seam (coal seam inclination> 75 °) is proposed The logarithm of the expected value of the law. The calculation method was verified by using the measured data of Kongji Mine. The results show that the parameters used in the method are stable, which can provide theoretical support for the prediction and warning of the ground subsidence caused by the mining of steep coal seams, and have strong practicability.