任意分布形式煤层开采地表移动预计方法

METHOD FOR PREDICTION OF SURFACE MOVEMENT IN MINING COAL SEAM OF ARBITRARY PATTERN OF DISTRIBUTION

地下开采煤层的分布形式多种多样，平面分布仅是曲面分布形式中的一种简单情况。根据概率积分法的基本原理及其预计参数的一般规律，将复杂的褶皱构造煤层按轴线划分为单斜构造煤层后，采用曲面积分法，推导出了开采曲面分布煤层时预计地表移动与变形值的计算公式，介绍了对任意形状工作面的处理方法及确定积分区间的方法。最后，用实测资料进行了验证，预计精度令人满意。

The distribution patterns of underground coal seam is diversified. The plane distribution is only one of the simple curved surface distribution patterns. Based on the basic principles of probability integration and the general rules for prediction of its parameters, a complicated folding structure coal seam is classed as a monoclinal structure coal seams, in terms of fold axis. And surface integration is introduced to deduct a formula for predicting surface movement and calculation of deformation value, when a surface distribution coal seam is extracted. The methods for processing any shape of face and for determing the integral interval are described. Finally, the calculated data are checked by the measured data. The prediction accuracy is satisfactory.