复杂断层构造高陡边坡稳定性计算分析
Stability calculation and analysis of high and steep slope with complex fault structure
刘惠洋 1张东亮 2李光 3金长宇 1吕凯 2杨光辉2
作者信息
- 1. 东北大学 深部金属矿山安全开采教育部重点实验室,沈阳 110819
- 2. 包钢勘察测绘研究院,内蒙古 包头 014010
- 3. 鞍钢基石矿业有限公司,辽宁 鞍山 114047
- 折叠
摘要
复杂断层构造是威胁矿山安全的重要危险源之一,对露天矿边坡进行稳定性分析、安全评价和治理研究已成为国内外矿山研究领域的重要课题.选取白云鄂博铁矿主采场南帮作为研究背景,针对该地区高陡边坡存在的复杂断层、局部失稳和滑坡等地质问题展开了深入调查和研究.研究采用了数值分析和短基线子集干涉测量(SBAS-InSAR)技术,能较为准确预测可能发生滑移的区域,提供精确的边坡稳定性评估.通过三维数值分析搜索潜在危险靶区,并用二维精细剖面计算进一步分析.在此基础上,应用SBAS-InSAR技术对地表形变进行时序监测,通过分析雷达影像的相位信息,精确测量地表微小变形,进一步验证了数值分析的可靠性和有效性.本文综合两种技术手段,全面评估了白云鄂博铁矿主采场南帮地区的边坡稳定性,有效预防和减轻了地质灾害带来的损失,并为类似复杂断层构造的高陡露天矿边坡稳定性分析提供了一定参考.
Abstract
Complex fault structures pose significant hazards to mining safety,underscoring the importance of stability analysis,safety assessment,and management of open-pit slopes in both domestic and international mining research.This study focused on the southern slope of the primary mining area at Baiyun Obo iron mine,conducting thorough investigations and research into geological challenges such as dense reverse complex faults,localized instability and landslides on steep slopes in the region.The numerical simulation analysis and Short Baseline Subset Interferometry(SBAS-InSAR)technology were used in the study,which could accurately predict areas prone to slide and provide precise evaluations of slope stability.The potential hazard zones were searched by three-dimensional numerical model,and further analyzed by detailed two-dimensional profiles.Additionally,SBAS-InSAR technology was employed for temporal monitoring of surface deformation,accurately measuring minor changes through radar image phase analysis,thereby validating the reliability and effectiveness of numerical analysis.By integrating these two methodologies,this paper comprehensively assesses the slope stability of the southern slope in the main mining area of Baiyun Obo iron mine,effectively mitigating and preventing losses from geological disasters.It also serves as a valuable reference for stability analysis of high steep open-pit mine slopes with similar complex fault structures.
关键词
露天矿/边坡稳定性分析/断层破碎带/SBAS-InSARKey words
Open pit mine/Slope stability analysis/Fault fracture zone/SBAS-InSAR引用本文复制引用
出版年
2025
NETL
NSTL
万方数据