露天采矿技术2024，Vol.39Issue(1)：17-21,5.DOI:10.13235/j.cnki.ltcm.2024.01.004
露天煤矿外排土场分布对复合边坡稳定性的影响
Influence of the distribution of external dump on composite slopes stability in Open-pit Coal Mine
摘要
Abstract
In order to explore the influence degree of the distribution of the external dump of the open-pit coal mine in Xinjiang on the composite slope of the stope-dump,this article analyzes the stress distribution law and landslide theoretical model of the composite slope dump-stope,and establishes the composite slope model with different safety distances for stability analysis through FLAC3D software.The results show that the landslide mechanism of the composite slope is that cracks are generated in the radial unloading area of the stope slope under the high stress state of the upper load and continue to develop to penetration.With the increase of the distance,the"pressure transfer"effect of the dump is gradually weakened,and when the distance is 300 m,the external dump has almost no effect on the slope of the quarry.The slope stability is 1.44,which meets the long-term safety requirements.Therefore,we consider that the safe distance between the quarry and the external dump is 300 m.关键词
边坡稳定性/复合边坡/数值模拟/FLAC3D/滑动模式Key words
slope stability/composite slope/numerical simulation/FLAC3D/sliding mode分类
矿业与冶金引用本文复制引用
董蒙蒙..露天煤矿外排土场分布对复合边坡稳定性的影响[J].露天采矿技术,2024,39(1):17-21,5.基金项目
沈阳市中青年科技创新人才支持计划资助项目(RC220436,RC220484) （RC220436,RC220484）
