为了能够更准确地计算出煤矿开采中上覆岩层两带高度,针对《建筑物、水体、铁路及主要井巷煤柱留设与压煤开采规程》中给出的垮落带和裂隙带高度计算公式计算范围较宽的问题,采用Matlab进行曲线拟合,建立了以上覆岩层强度和采厚为变量的量化计算公式,确定了其函数关系,使得计算范围的准确度提高,计算结果更可靠。本研究为单一长壁式全部垮落法开采两带高度的计算提供了更为准确的理论公式,有一定的理论意义和实用价值。

After the coal seam is extracted, the original rock stress is released, under the longwall mining full caving conditions, in the overlying strata above a goaf, a caving zone, a fracture zone (or water suture zone) and a bending belt will be formed, as is normally called the "three zones". In order to calculate two zones' (break and crack zones) height in the overlying strata of the underground coal mining more accurately, with consideration of the fact that the two zones' calculation formula in the specifications covers a too broad range, by using Matlab for the curve fitting, this paper proposes calculation formulas based on the overlying strata strength and the mining thickness, and with a functional relationship between them. The accuracy of the calculation is improved. Through the calculation of the two zones' height of the overlying strata of 22101 working face in Huoluowan coal mine, the calculation method of this paper is verified. It is indeed a more accurate calculation formula for the zones' height for the single long wall fully caving coal.