摘要
通过相似模拟试验,对安太堡露天矿南帮露井联采下边坡的破坏过程进行了研究,同时结合露天边坡破坏的模式以及边坡的沉降变形规律,对安太堡露天矿南帮边界参数进行了优化分析。结果表明,露井联采下的边界参数,即井工开切眼距上部边坡台阶的垂直安全高度,是决定露天边坡稳定的关键因素。4#煤和9#煤复合开采时,9#煤是决定边坡稳定的主要开采煤层。最后提出了4#煤和9#煤复合开采其合理的垂直安全高度应在131m以上,为保证露井联采下边坡的稳定提供了依据。
Through similar simulation, the failure process of southern Antaibao open-pit slope under open-underground mining were researched, and based on the failure mode and the settlement behavior of the slope, the boundary parameter of southern Antaibao was optimized. The results show： boundary parameter under open-underground mining, namely vertical height of safe mining between open-off cut and the upper slope, is the nuclear factor for open-pit slope stability, No. 9 coal seam was the main seam of the slope stability under the composite mining of No. 4 and No. 9 coal seams. At last, proposed the reasonable vertical height of safe mining should be no less than 131m, thus providing a base for ensuring the slope stability under open-underground mining.
出处
《中国矿业》
北大核心
2008年第9期79-82,共4页
China Mining Magazine
关键词
露井联采
边界参数
相似模拟
沉降规律
垂直安全高度
open-underground mining
boundary parameter
similar simulation
settlement behavior
vertical height of safe mining
