摘要
为研究爆破振动、降雨等外部因素对露天矿山顺倾边坡稳定性的影响,采用合成孔径雷达系统对河北省某铁矿的边坡变形进行长期监测,研究爆破振动和降雨条件下对顺倾边坡的影响规律。研究结果表明:爆破振动对顺倾边坡的影响较大,且持续周期较长,影响周期可达10 d,累积变形量主要以阶梯状加速趋势增长;在降雨作用下,边坡出现较为明显的变形,但相较于爆破振动对边坡产生的影响,其影响周期较短,一般在3~5 d之间;在爆破振动及降雨因素影响下,采用合成孔径雷达系统监测的露天矿山顺倾边坡表面变形数据与现场情况一致性较好。研究结果可为在采场生产作业期间,相关露天矿山企业对重点防护区域变形的成因分析提供一定参考。
To study the influence of external factors such as blasting vibration and rainfall on the stability of inclined slope in the open-pit mine,the synthetic aperture radar system was used to monitor the slope deformation of an iron ore in Hebei Province for a long time,and the influence of blasting vibration and rainfall condition on the inclined slope was studied.The results show that the blasting vibration has greater influence on the inclined slope,and the duration period is longer,the influence period can reach 10 d,and the cumulative deformation mainly increases in a stepped acceleration trend.Under the action of rainfall,the slope has obvious deformation,but compared with the influence of blasting vibration on the slope,its period is shorter,and the influence period is between 3~5 d.Under the influence of vibration and rainfall,the monitoring data of surface deformation of stope slope are in good agreement with the field.The research results can provide some reference for the deformation causes and related research of the key protection areas of open-pit mine enterprises during the production operation of the stope.
作者
姜旭桐
李万涛
王克军
JIANG Xutong;LI Wantao;WANG Kejun(Cathay Safety Technology Co.,Ltd.,Beijing 100012,China;Hebei Iron and Steel Group Luanxian Sijiaying Iron Mine Co.,Ltd.,Luanzhou Hebei 063700,China)
出处
《中国安全生产科学技术》
CAS
CSCD
北大核心
2023年第S01期25-30,共6页
Journal of Safety Science and Technology
基金
中国安全生产科学研究院基本科研业务费专项资金项目(2022JBKY14)
关键词
露天矿山
顺倾边坡
变形监测
监测技术
影响因素
open-pit mine
inclined slope
deformation monitoring
monitoring technology
influencing factor
