露天采矿技术2024，Vol.39Issue(1)：52-56,5.DOI:10.13235/j.cnki.ltcm.2024.01.011
露天煤矿非工作帮顺倾软岩边坡稳定性研究
Study on the stability of down-dip soft rock slope at non-working slope of open-pit coal mine
李思维 1周亚森2
作者信息
- 1. 国能新疆红沙泉能源有限责任公司,新疆 乌鲁木齐 830000
- 2. 辽宁工程技术大学,辽宁 阜新 123000
- 折叠
摘要
Abstract
In order to improve the stability of open-pit soft rock slopes in open-pit coal mines,based on the actual engineering situation of the non working slope in Baiyinhua No.2 Open-pit Coal Mine as a typical inclined soft rock slope,the geotechnical engineering numerical simulation software FLAC3D was used to reveal the morphological and dimensional effects of slope stability,establish the relationship curve between the critical slope angle and the critical length of weak layer exposure,and ultimately design the spatial geometry of non-working slopes in favor of the stabilization of Baiyinhua No.2 Open-pit Coal Mines.The results of the study show that the stability of the open-pit mine slope can be effectively improved by reasonably controlling the exposure length of the weak layer and the key indexes such as the excavation slope angle,and the finalization of the excavation slope angle of the non-working slope of Baiyinhua No.2 Open-pit Coal Mine is 45°,and at this time,the critical length of the weak layer exposed at the bottom of the pit is about 176 m,so that the slope can satisfy the safety requirements.关键词
顺倾软岩边坡/数值模拟/滑移模式/开挖坡角/弱层暴露长度Key words
down-dip soft rock slope/numerical simulation/slip model/slope angle of excavation/exposed length of weak layer分类
矿业与冶金引用本文复制引用
李思维,周亚森..露天煤矿非工作帮顺倾软岩边坡稳定性研究[J].露天采矿技术,2024,39(1):52-56,5.
