基于S-SAR的露天顺层软岩边坡破坏模式及变形特征研究
Failure mode and deformation characteristics of open-air bedding soft rock slope based on S-SAR
杨俊鹏 1鲁森 1崔丽琼 1冯兴起 2王天赐 2卢柏旭1
作者信息
- 1. 中安国泰(北京)科技发展有限公司,北京 100012
- 2. 新疆紫金锌业有限公司,新疆 乌恰 845450
- 折叠
摘要
露天顺层软岩边坡变形表现为长时间的蠕变,破坏往往难以提前预测排查到.为探究其破坏前后变形特征,提高滑坡预警准确率,以新疆某铅锌矿床为背景,分析了露天顺层软岩边坡滑坡破坏模式,并基于边坡合成孔径雷达(S-SAR)现场监测数据,得到了边坡台阶破坏前后的变形特征.结果表明:露天顺层软岩边坡破坏模式多表现为自重及强风化导致的崩塌和流动,破坏发生在边坡的加速变形阶段,边坡变形位移3阶段整体时间约为7d,同时结合雷达监测数据为矿山在线监测预警提供了合理化建议,可为相似条件下露天矿山安全生产提供参考.
Abstract
The deformation of open-air bedding soft rock slope is creep for a long time,and the failure is often difficult to predict and check in advance.In order to explore the deformation characteristics before and after failure and improve the accuracy of landslide warning,the failure mode of open-pit strata soft rock slope was analyzed based on a lead-zinc mine in Xinjiang,and the deformation characteristics before and after the slope step failure were obtained based on the slope synthetic aperture radar(S-SAR)field monitoring data.The results show that the failure modes of open-pit bedding soft rock slope are mostly collapse and flow caused by self-weight and strong weathering,and the failure occurs in the accelerated deformation stage of slope,and the overall time of slope deformation and displacement in the three stages is about 7d.At the same time,combining radar monitoring data provides a reasonable suggestion for mine online monitoring and early warning,and can provide a reference for the safety production of open-pit mine under similar conditions.
关键词
露天矿山/S-SAR/实时监测/滑坡预警/破坏模式Key words
open-pit mines/S-SAR/real-time monitoring/landslide warning/failure mode引用本文复制引用
基金项目
中国安全生产科学研究院基本科研业务费专项资金项目(2023JBKY04)
出版年
2024
NETL
NSTL
万方数据