大平煤矿采放高度对导水裂缝带高度的影响

为解决进行水下开采时,采空区上覆岩层导水裂缝带的发育高度直接影响煤矿安全生产问题。针对大平煤矿覆岩类型和开采条件,参照N1S1单一开采试采工作面煤层的赋存条件和导水裂缝带高度的观测结果,应用岩石破裂过程分析RFPA2D系统,数值模拟得出了采放高度对导水裂缝带高度的影响程度,为大平煤矿单一综放开采预计导水裂缝带高度以及提高开采上限,提供重要的参考依据。

Effect of mining height on height of water suture zone in overlying strata of Daping Coal Mine

When mining under water, the height of the water suture zone in the goaf's overlying strata has direct effect on the safety of the production in mines. In this paper.based on the overlying strata's types and mining conditions of Draping Mine, referring to the occurrence condition of the coal seam and the actual measuring results of the water suture zone's height over N1S1 working face, the author gains the mining height effect on the water suture zone's height by using RFPA2D, which has important reference value in the forecasting the height of the water suture zone and increasing the mining limit under single sub-level mining method in Daping Coal Mine.