论文部分内容阅读
在详细分析第四系松散层上、中、下各组含水层间水位变化及底部黏土特征基础上,以杨村煤矿317工作面为地质背景,建立了3~#煤开采的工程地质模型,利用FLAC~(3D)软件模拟并求出了垮落带高度为33 m,再结合“三下”开采规程和相邻矿井的经验公式计算了留设防砂煤柱的具体高度,最终确定了该工作面的开采上限高度。
Based on the detailed analysis of the change of water level and the characteristics of the bottom clay in the upper and lower strata of Quaternary unconsolidated strata, the 317 geological face of Yangcun Coal Mine is taken as the geological background to establish the engineering geological model of 3 ~ # coal mining, The FLAC 3D software was used to simulate and calculate the height of the caving zone to be 33 m, and then the specific height of the sand control pillar was calculated based on the “three times” mining regulations and the empirical formula of the adjacent mine. Finally, the final height The face of the mining ceiling height.