煤层覆岩破坏高度的数学分析

采用模糊聚类和多元回归等方法,定量分析煤层开采时,上覆岩层性质和采厚、倾角对覆岩破坏高度的影响程度;同时,利用“P”系数与曲线拟合法,导出冒落裂缝高度的通用计算公式。其结果,深化了对覆岩破坏影响因素的认识,并为实现“三下”尤其是水体下的安全合理开采,提供了定量分析、计算方法。

Mathematical Analysis of the Overlying Strata Failure Height

The paper quantitatively analyses the extent to which the nature of the overlying strata, working thickness and dip affact the overlying strata failure height during coal seam excavation, using fuzzy clustering and multivariate regression methods. In the meantime, by means of P coefficiant and qua si-collection curve, the paper deduced general formula for the calculation of the height of the water conduction zone. Consequently, the factors that affect overlying strata failure is better known and quantitative analysis meons and calcuation methods are provided for the safe excavation in the Three-Uuder-Mining, especially in the Underwater mining.