变形监测和安全稳定性评估研究,对高海拔石灰岩倾倒场进行研究
Jianjun Dong1,2, Yawen Guo1,2, Yuan Mei1,2
1College of Safety Science and Engineering, Liaoning Technical University, Huludao, Liaoning, China.
PloS one
|February 18, 2025
概括
合成孔径雷达干扰度 (InSAR) 有效监测高海拔垃圾填埋场斜坡的稳定性. 增强的InSAR模型准确地追踪雨水引起的变形,这对于管理具有挑战性的环境至关重要.
科学领域:
- 地质技术工程 地质技术工程
- 遥感 遥感 遥感 遥感
- 环境监测 环境监测
背景情况:
- 高海拔的垃圾填埋场面临着独特的坡道稳定性挑战.
- 气候变化,特别是温度和降雨,显著影响斜坡的行为.
- 有效的监测对于防止潜在危险至关重要.
研究的目的:
- 使用InSAR评估高海拔垃圾填埋场的坡度稳定性.
- 增强INSAR对高海拔气候条件的变形监测模型.
- 通过GNSS测量来验证InSAR的准确性.
主要方法:
- 采用合成孔径雷达干扰测量 (InSAR),包括差异性InSAR (D-InSAR) 和小基线子集InSAR (SBAS-InSAR).
- 开发了一个增强的InSAR模型,以减轻温度和降雨效应.
- 通过全球导航卫星系统 (GNSS) 实时运动测量 (RTK) 验证的InSAR结果.
主要成果:
- 与GNSS相比,增强的InSAR模型显示平均误差为0.28毫米,没有显著差异.
- 最大斜坡位移超过20毫米,降雨量超过300毫米,引发了蓝色警告.
- 在2018-2022年间,变形速率在0~9.00mm/a (滑动类别VII) 之间,主要是在雨季.
结论:
- 在SAR技术为高海拔坡道提供了全面的,动态的监控.
- 降雨是斜坡变形的主要触发因素,具有明显的hysteresis效应.
- 在具有挑战性的高海拔环境中,InSAR是管理斜坡稳定性的有效工具.
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